2018
Journal Articles
- The complexity of weakly recognizing morphismsRAIRO-Theor. Inf. Appl.. 2018.
- Green’s Relations in Deterministic Finite AutomataTheory Comput. Syst.. Springer, 2018.
- QuickMergesort: Practically Efficient Constant-Factor Optimal SortingarXiv eprints. abs/1804.10062 2018.
- The Word Problem for Omega-Terms over the Trotter-Weil HierarchyTheory of Computing Systems. 62:682–738. Springer, 2018.
- Level two of the quantifier alternation hierarchy over infinite wordsTheory of Computing Systems. 62:467–480. Springer, 2018.
- On the Structure Theory of Partial Automaton SemigroupsArXiv e-prints. abs/1811.09420 2018.
- Orbit Expandability of Automaton Semigroups and GroupsArXiv e-prints. abs/1812.07359 2018.
- The isomorphism problem for finite extensions of free groups is in PSPACEArXiv e-prints. 2018.
- QuickXsort - A Fast Sorting Scheme in Theory and PracticearXiv eprints. abs/1811.01259 2018.
Conference Articles
- The Intersection Problem for Finite SemigroupsDLT 2018, Proceedings, volume 11088 of LNCS, pages 318–329. Springer, 2018.
- Testing Simon’s congruenceMFCS 2018, Proceedings, volume 117 of LIPIcs, pages 62:1–62:13. Dagstuhl Publishing, 2018.
- On the Complexity of the Cayley Semigroup Membership ProblemCCC 2018, Proceedings, volume 102 of LIPIcs, pages 25:1–25:12. Schloss Dagstuhl – Leibniz-Zentrum für Informatik, 2018.
- The Intersection Problem for Finite MonoidsSTACS 2018, Proceedings, volume 96 of LIPIcs, pages 30:1–30:14. Schloss Dagstuhl – Leibniz-Zentrum für Informatik, 2018.
- The Isomorphism Problem for Finite Extensions of Free Groups Is In PSPACE45th International Colloquium on Automata, Languages, and Programming, ICALP 2018, July 9-13, 2018, Prague, Czech Republic, pages 139:1–139:14. Schloss Dagstuhl – Leibniz-Zentrum für Informatik, 2018.
Book Chapters
- Log-Space Complexity of the Conjugacy Problem in Wreath ProductsInfinite Group Theory, Chapter 12, pages 215-236. World Scientific, 2018.
2017
Journal Articles
- On the dimension of matrix embeddings of torsion-free nilpotent groupsJ. Algebra. 477:516–539. 2017.
- The Half-Levels of the FO2 Alternation HierarchyTheory Comput. Syst.. 61(2):352–370. Springer, 2017.
- Equations Over Free Inverse Monoids with Idempotent VariablesTheory Comput. Syst.. 61:494–520. 2017.
- Characterizing classes of regular languages using prefix codes of bounded synchronization delayInternational Journal of Algebra and Computation. 27:561–590. 2017.
- circuits for algorithmic problems in nilpotent groupsArXiv e-prints. abs/1702.06616 2017.
- On the complexity of the word problem for automaton semigroups and automaton groupsAdvances in Applied Mathematics. 90():160 - 187. 2017.
- Automaton Semigroups and Groups: on the Undecidability of Problems Related to Freeness and FinitenessArXiv e-prints. abs/1712.07408 2017.
- Parikh-reducing Church–Rosser representations for some classes of regular languagesTheoretical Computer Science. 702:34 - 47. 2017.
- Amenability of Schreier graphs and strongly generic algorithms for the conjugacy problemJ. Symb. Comput.. 83:147–165. 2017.
Conference Articles
- Church-Rosser Systems, Codes with Bounded Synchronization Delay and Local Rees ExtensionsWORDS 2017, Proceedings, volume 10432 of LNCS, pages 6–16. Springer, 2017.
- Green’s Relations in Finite Transformation SemigroupsCSR 2017, Proceedings, volume 10304 of LNCS, pages 112–125. Springer, 2017.
- The conjugacy problem in free solvable groups and wreath product of abelian groups is inComputer Science - Theory and Applications - 12th International Computer Science Symposium in Russia, CSR 2017, Kazan, Russia, June 8-12, 2017, Proceedings, pages 217–231. 2017.
- Solutions of Twisted Word Equations, EDT0L Languages, and Context-Free Groups44th International Colloquium on Automata, Languages, and Programming (ICALP 2017), volume 80 of Leibniz International Proceedings in Informatics (LIPIcs), pages 96:1–96:14. Schloss Dagstuhl–Leibniz-Zentrum für Informatik, 2017.
- TC Circuits for Algorithmic Problems in Nilpotent Groups42nd International Symposium on Mathematical Foundations of Computer Science, MFCS 2017, Proceedings, volume 83 of LIPIcs, pages 23:1–23:14. Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, 2017.
Theses
- The parallel complexity of certain algorithmic problems in group theoryDissertation, Institut für Formale Methoden der Informatik, Universität Stuttgart, 2017.
Book Chapters
- Context-Free Groups and Bass-Serre TheoryAlgorithmic and Geometric Topics Around Free Groups and Automorphisms, Advanced Courses in Mathematics - CRM Barcelona, Birkhäuser, 2017.
2016
Journal Articles
- Logspace Computations in Graph ProductsJournal of Symbolic Computation. 75(C):94–109. Academic Press, Inc., July 2016.
- BlockQuicksort: How Branch Mispredictions don’t affect QuicksortArXiv e-prints. abs/1604.06697 2016.
- Finding all solutions of equations in free groups and monoids with involutionInformation and Computation. 251:263–286. 2016.
- A Survey on the Local Divisor TechniqueTheoretical Computer Science. 610:13–23. 2016.
- Conjugacy in Baumslag’s group, generic case complexity, and division in power circuitsAlgorithmica. 74:961-988. 2016.
- Solution sets for equations over free groups are EDT0L languagesInternational Journal of Algebra and Computation. 26:843–886. 2016.
- QuickHeapsort: Modifications and Improved AnalysisTheory Comput. Syst.. 59(2):209–230. 2016.
Conference Articles
- Operations on Weakly Recognizing MorphismsDCFS 2016, Proceedings, volume 9777 of LNCS, pages 126–137. Springer, 2016.
- BlockQuicksort: Avoiding Branch Mispredictions in Quicksort24th Annual European Symposium on Algorithms, ESA 2016, August 22-24, 2016, Aarhus, Denmark, volume 57 of LIPIcs, pages 38:1–38:16. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016.
- Level Two of the Quantifier Alternation Hierarchy over Infinite WordsCSR, volume 9691 of Lecture Notes in Computer Science, pages 223–236. Springer, 2016.
- Solutions of Word Equations Over Partially Commutative Structures43rd International Colloquium on Automata, Languages, and Programming (ICALP 2016), volume 55 of Leibniz International Proceedings in Informatics (LIPIcs), pages 127:1–127:14. Schloss Dagstuhl–Leibniz-Zentrum für Informatik, 2016.
- Characterizing classes of regular languages using prefix codes of bounded synchronization delay43rd International Colloquium on Automata, Languages, and Programming (ICALP 2016), volume of Leibniz International Proceedings in Informatics (LIPIcs), pages 129:1–129:13. 2016.
- The Word Problem for Omega-Terms over the Trotter-Weil HierarchyCSR 2016, Proceedings, pages 237–250. Springer, 2016.
Book Chapters
- A Logspace Solution to the Word and Conjugacy problem of Generalized Baumslag-Solitar GroupsAlgebra and Computer Science, volume 677 of Contemporary Mathematics, pages 185–212. American Mathematical Society, 2016.
Theses
- Local Divisors in Formal LanguagesDissertation, Institut für Formale Methoden der Informatik, Universität Stuttgart , 2016.
2015
Journal Articles
- One quantifier alternation in first-order logic with modular predicatesRAIRO-Theor. Inf. Appl.. 49(1):1–22. 2015.
- Omega-rational expressions with Bounded Synchronization DelayTheory of Computing Systems. 56:686–696. Springer-Verlag, 2015.
- Regular Languages Are Church-Rosser CongruentialJournal of the ACM. 62:39:1–39:20. ACM, 2015.
- Asymptotic Approximation for the Quotient Complexities of AtomsActa Cybernetica. 22:349–357. 2015.
- SLP compression for solutions of equations with constraints in free and hyperbolic groupsInternational Journal of Algebra and Computation. 25:81–112. 2015.
Conference Articles
- Efficient Algorithms for Morphisms over Omega-Regular LanguagesFSTTCS 2015, Proceedings, volume 45 of LIPIcs, pages 112–124. Dagstuhl Publishing, 2015.
- Amenability of Schreier Graphs and Strongly Generic Algorithms for the Conjugacy ProblemProceedings of the 2015 ACM on International Symposium on Symbolic and Algebraic Computation, ISSAC 2015, Bath, United Kingdom, July 06 - 09, 2015, pages 141–148. 2015.
- Solution sets for equations over free groups are EDT0L languagesProc. 42nd International Colloquium Automata, Languages and Programming (ICALP 2015), Part II, Kyoto, Japan, July 6-10, 2015, volume 9135 of Lecture Notes in Computer Science, pages 134-145. Springer, 2015.
- Equations over free inverse monoids with idempotent variablesProc. 10th International Computer Science Symposium in Russia, CSR 2015, Listvyanka, Russia, July 13-17, 2015, volume 9139 of Lecture Notes in Computer Science, pages 173-188. Springer, 2015.
- A Note on Monitors and Büchi AutomataTheoretical Aspects of Computing - ICTAC 2015 - 12th International Colloquium Cali, Colombia, October 29-31, 2015, Proceedings, pages 39–57. 2015.
- More Than Years of Word EquationsAlgebraic Informatics - 6th International Conference, CAI 2015, Stuttgart, Germany, September 1-4, 2015. Proceedings, pages 22–28. 2015.
Theses
- On the Complexity of Conjugacy in Amalgamated Products and HNN ExtensionsDissertation, Institut für Formale Methoden der Informatik, Universität Stuttgart, 2015.
2014
Journal Articles
- Topology, monitorable properties and runtime verificationTheoretical Computer Science. 537:29–41. 2014.
- Two-Variable Ehrenfeucht-Fraisse Games over Omega-TermsArXiv e-prints. abs/1411.0593 2014.
Conference Articles
- Star-Free Languages and Local DivisorsDCFS 2014, Proceedings, volume 8614 of Lecture Notes in Computer Science, pages 23–28. Springer, 2014.
- Finding All Solutions of Equations in Free Groups and Monoids with InvolutionComputer Science Symposium in Russia 2014, CSR 2014, Moscow, Russia, June 7-11, 2014. Proceedings, volume 8476 of Lecture Notes in Computer Science, pages 1–15. Springer, 2014.
- Block Products and Nesting Negations inCSR 2014, Proceedings, volume 8476 of LNCS, pages 176–189. Springer, 2014.
- Conjugacy in Baumslag’s Group, Generic Case Complexity, and Division in Power CircuitsLatin American Theoretical Informatics Symposium, pages 1-12. 2014.
- QuickXsort: Efficient Sorting with Comparisons on AverageCSR, pages 139-152. 2014.
- Logspace computations in graph productsProc. International Symposium on Symbolic and Algebraic Computation, ISSAC ’14, Kobe, Japan, July 23-25, 2014, pages 138-145. 2014.
2013
Journal Articles
- Efficient algorithms for highly compressed data: The word problem in Higman’s group is in PInternational Journal of Algebra and Computation. 22(8) 2013.
- Efficient algorithms for highly compressed data: The word problem in Higman’s group is in PTheory of Computing Systems. :1-29. Springer US, 2013.
- QuickXsort: Efficient Sorting with Comparisons on AverageArXiv e-prints. abs/1307.3033 2013.
- Context-Free Groups and Their Structure TreesInternational Journal of Algebra and Computation. 23:611–642. 2013.
- Context-Free Groups and Bass-Serre TheoryArXiv e-prints. 2013.
- Logspace computations in graph productsarXiv eprints. 2013.
Conference Articles
- Quantifier Alternation in Two-Variable First-Order Logic with Successor Is Decidable30th International Symposium on Theoretical Aspects of Computer Science (STACS) 2013, Conference Proceedings, volume 20 of Leibniz International Proceedings in Informatics (LIPIcs), pages 305–316. Schloss Dagstuhl–Leibniz-Zentrum für Informatik, 2013.
- QuickHeapsort: Modifications and Improved AnalysisComputer Science Symposium in Russia (CSR) 2013, Conference Proceedings, pages 24-35. 2013.
- Weak Heaps and Friends: Recent DevelopmentsCombinatorial Algorithms - 24th International Workshop, IWOCA 2013, Rouen, France, July 10-12, 2013, Revised Selected Papers, pages 1–6. 2013.
Technical Reports
- Nesting Negations in over Finite WordsTechnical Report Computer Science, Document number: 2013/07. University of Stuttgart, September 2013.
Books
- Elemente der Diskreten MathematikDe Gruyter, 2013.
- Diskrete algebraische MethodenDe Gruyter, 2013.
2012
Journal Articles
- The Krohn-Rhodes Theorem and Local DivisorsFundamenta Informaticae. 116:65–77. 2012.
- The Join of the Varieties of R-trivial and L-trivial Monoids via Combinatorics on WordsDiscrete Mathematics & Theoretical Computer Science. 14(1):141–146. 2012.
- Around Dot-Depth OneInternational Journal of Foundations of Computer Science. 23(6):1323–1339. World Scientific, 2012.
- Star-Free Languages are Church-Rosser CongruentialTheoretical Computer Science. 454:129–135. 2012.
- Deciding regularity of hairpin completions of regular languages in polynomial timeInformation and Computation. 217:12–30. 2012.
- Language theoretical properties of hairpin formationsTheoretical Computer Science. 429:65–73. 2012.
- Cyclic rewriting and conjugacy problemsGroups Complexity Cryptology. 4(2):321–355. 2012.
- Group Extensions over Infinite WordsInternational Journal of Foundations of Computer Science. 23:1001-1019. 2012.
- Efficient algorithms for highly compressed data: The Word Problem in Higman’s group is in PInternational Journal of Algebra and Computation. 22(8):1–19. 2012.
- Deciding Whether a Regular Language is Generated by a Splicing SystemArXiv e-prints. abs/1112.4897 2012.
Conference Articles
- Bounded synchronization delay in omega-rational expressionsComputer Science Symposium in Russia (CSR) 2012, Conference Proceedings, volume 7353 of Lecture Notes in Computer Science, pages 89–98. Springer-Verlag, 2012.
- Lattices of Logical Fragments over WordsAutomata, Languages and Programming, International Colloquium (ICALP) 2012, Conference Proceedings Part II, volume 7392 of Lecture Notes in Computer Science, pages 275–286. Springer-Verlag, 2012.
- The alternation hierarchy is decidableComputer Science Logic (CSL) 2012 - 26th International Workshop/21st Annual Conference of the EACSL, Conference Proceedings, volume 16 of Leibniz International Proceedings in Informatics (LIPIcs), pages 426–439. Schloss Dagstuhl–Leibniz-Zentrum für Informatik, 2012.
- Regular Ideal Languages and Their Boolean CombinationsImplementation and Application of Automata (CIAA) 2012, Conference Proceedings, volume 7381 of Lecture Notes in Computer Science, pages 205–216. Springer, 2012.
- The join levels of the Trotter-Weil hierarchy are decidableMathematical Foundations of Computer Science, International Symposium (MFCS) 2012, Conference Proceedings, volume 7464 of Lecture Notes in Computer Science, pages 603–614. Springer, 2012.
- Regular Languages are Church-Rosser CongruentialInternational Colloquium Automata, Languages and Programming (ICALP) 2012, Conference Proceedings, Part II, volume 7392 of Lecture Notes in Computer Science, pages 177–188. Springer-Verlag, 2012.
- On Distributed Monitoring of Asynchronous SystemsWoLLIC, pages 70-84. 2012.
- Logspace Computations in Graph Groups and Coxeter GroupsProceedings of LATIN 2012, volume 7256 of Lecture Notes in Computer Science, pages 243–254. 2012.
- Logspace computations in Coxeter groups and graph groupsComputational and Combinatorial Group Theory and Cryptography, volume 582 of Contemporary Mathematics, pages 77–94. Amer. Math. Soc., 2012.
- Iterated Hairpin Completions of Non-crossing Words38th Conference on Current Trends in Theory and Practice of Computer Science (SOFSEM), 2011, volume 7147 of Lecture Notes in Computer Science, pages 337–348. Springer, 2012.
- Efficient algorithms for highly compressed data: The Word Problem in Higman’s group is in PProc. 29th International Symposium on Theoretical Aspects of Computer Science, STACS 2012, Paris, France, volume 14 of Leibniz International Proceedings in Informatics (LIPIcs), pages 218–229. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2012.
- Efficient algorithms for highly compressed data: The Word Problem in Higman’s group is in PProc. 29th International Symposium on Theoretical Aspects of Computer Science, STACS 2012, Paris, France, volume 14 of LIPIcs, pages 218–229. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2012.
2011
Journal Articles
- Partially Ordered Two-way Büchi AutomataInternational Journal of Foundations of Computer Science. 22(8):1861–1876. World Scientific, 2011.
- Fragments of First-Order Logic over Infinite WordsTheory of Computing Systems. 48(3):486–516. Springer New York, 2011.FMI, Universität Stuttgart, Universitätsstraße 38, 70569 Stuttgart, Germany
- It is NL-Complete to Decide Whether a Hairpin Completion of Regular Languages is RegularInternational Journal of Foundations of Computer Science (IJFCS). 22(8):1813–1828. 2011.
- On iterated hairpin completionTheoretical Computer Science. 412(29):3629–3638. 2011.
- On the Regularity of Iterated Hairpin Completion of a Single WordFundamenta Informaticae. 110(1-4):201–215. 2011.
- On Computing Geodesics in Baumslag-Solitar GroupsInternational Journal of Algebra and Computation. 21(1-2):119–145. 2011.
Conference Articles
- Languages of Dot-Depth One over Infinite WordsIEEE Symposium on Logic in Computer Science (LICS) 2011, Conference Proceedings, pages 23–32. IEEE Computer Society, 2011.
- First-order Fragments with Successor over Infinite Words28th International Symposium on Theoretical Aspects of Computer Science (STACS) 2011, volume 9 of Leibniz International Proceedings in Informatics (LIPIcs), pages 356–367. Schloss Dagstuhl–Leibniz-Zentrum für Informatik, 2011.
- Solving Word Problems in Group Extensions over Infinite WordsDevelopments in Language Theory, pages 192-203. 2011.
- Group extensions over infinite wordsDevelopments in Language Theory, 15th International Conference, DLT 2011, Milan, Italy, July 19-22, 2011. Proceedings, volume 6795 of Lecture Notes in Computer Science, pages 192–203. Springer, 2011.
Technical Reports
- Cantor Topologies for Finite WordsTechnical Report Computer Science, Document number: 2011/02. University of Stuttgart, Febuary 2011.
Book Chapters
- Trace TheoryEncyclopedia of Parallel Computing, pages 2071–2079. Springer, 2011.
- Marriage BrokerAlgorithms Unplugged, Chapter 35, pages 345–355. Springer, 2011.1st edition
Theses
- Formal language theory of hairpin formationsDissertation, University of Stuttgart, 2011.
- Eine kombinatorische Charakterisierung kontextfreier GruppenDiplomarbeit Nr. 3075, Fakultät Informatik, 2011.
2010
Journal Articles
- On the lattice of sub-pseudovarieties of DASemigroup Forum. 81:243–254. 2010.
- Weinbaum Factorizations of Primitive WordsRussian Mathematics. 54(1):16–25. 2010.
- Resource bounded frequency computations with three errorsAlgorithmica. 56(3):342–363. 2010.
- Cyclically repetition-free words on small alphabetsInformation Processing Letters. 110(14-15):591–595. Elsevier Science Publishers Ltd., 2010.
Conference Articles
- Rankers over Infinite Words (Extended Abstract)Developments in Language Theory, 14th International Conference (DLT) 2010, Conference Proceedings, volume 6224 of Lecture Notes in Computer Science, pages 148–159. Springer, 2010.
- Complexity Results and the Growths of Hairpin Completions of Regular Languages (Extended Abstract)Implementation and Application of Automata - 15th International Conference (CIAA) 2010, volume 6482 of Lecture Notes in Computer Science, pages 105–114. Springer-Verlag, 2010.
- Geodesic rewriting systems and pregroupsCombinatorial and Geometric Group Theory, Trends in Mathematics, pages 55–91. Birkhäuser, 2010.
Book Chapters
- On the Iterated Hairpin CompletionDevelopments in Language Theory, volume 6224 of Lecture Notes in Computer Science, pages 438–439. Springer Berlin / Heidelberg, 2010.Universität Stuttgart, FMI
proceedings
- Theory of Computing Systems: Special Issue of the 3rd International Symposium on Computer Science in Russia, Moscow 2008, ProceedingsSpringer, 2010.
2009
Journal Articles
- Some remarks about stabilizersTheoretical Computer Science. 410(30-32):2935–2946. 2009.
- The Ehrenfeucht-Silberger Problem5555:537–548. Springer, 2009.
Conference Articles
- Fragments of First-Order Logic over Infinite Words26th International Symposium on Theoretical Aspects of Computer Science (STACS) 2009, Leibniz International Proceedings in Informatics (LIPIcs), pages 325–336. Schloss Dagstuhl – Leibniz-Zentrum für Informatik, 2009.
- On Quantifier Alternation over WordsMathematical Foundations of Computer Science 2009, 34th International Symposium, MFCS 2009, Nový Smokovec, Slovakia, August 24-28, 2009, Proceedings, volume 5734 of Lecture Notes in Computer Science, pages 513–524. Springer-Verlag, 2009.
- Local safety and local liveness for distributed systemsPerspectives in Concurrency Theory, pages 86–106. Universities Press, IARCS-Universities, 2009.
- On the Hairpin Completion of Regular LanguagesTheoretical Aspects of Computing - ICTAC 2009, volume 5684 of Lecture Notes in Computer Science, pages 170–184. Springer, 2009.
- Classification tree sourcesInformation Theory Workshop, 2009. ITW 2009. IEEE, pages 218–222. 2009.
- On Smoothed Analysis of Quicksort and Hoare’s FindCOCOON, volume 5609 of Lecture Notes in Computer Science, pages 158–167. Springer, 2009.
- On Bijective Variants of the Burrows-Wheeler TransformStringology, pages 65-79. Prague Stringology Club, Department of Computer Science and Engineering, Faculty of Electrical Engineering, Czech Technical University in Prague, 2009.
- Combining models in data compressionProceedings of the 30th Symposium on Information Theory in the Benelux, Eindhoven, The Netherlands, pages 135–142. 2009.
- Maximal Intersection Queries in Randomized Input ModelsTheory of Computing Systems: Special Issue: Symposium on Computer Science 2007, Proceedings, pages 104–119. Springer, 2009.
- On the limits of the communication complexity technique for proving lower bounds on the size of minimal NFA’spages 2972–2981. 2009.
- Simulations by Time-Bounded Counter Machines13th International Conference, DLT 2009, Stuttgart, Germany, June 30–July 3, 2009, Proceedings, volume 5583 of Lecture Notes in Computer Science, pages 410–418. Springer-Verlag, 2009.
- Range mode and range median queries in constant time and sub-quadratic spacepages 225–228. 2009.
proceedings
- Developments in Language Theory, 13th International Conference, DLT 2009, Stuttgart, Germany, June 30 - July 3, 2009. Proceedingsvolume 5583 of Lecture Notes in Computer Science. Springer, 2009.
Books
- Informatik als Dialog zwischen Theorie und Anwendung: Festschrift für Volker Claus zum 65. GeburtstagVieweg+Teubner, 2009.
Book Chapters
- Komplexität der GeographieInformatik als Dialog zwischen Theorie und Anwendung: Festschrift für Volker Claus zum 65. Geburtstag, Chapter 11, pages 119–132. Vieweg+Teubner, 2009.
- Variationen über Walther von Dyck und Dyck-SprachenInformatik als Dialog zwischen Theorie und Anwendung: Festschrift für Volker Claus zum 65. Geburtstag, Chapter 13, pages 147–154. Vieweg+Teubner, 2009.
2008
Journal Articles
- A note on an extension of PDLJournal of Applied Logic. 6(4):606–608. December 2008.
- A Survey on Small Fragments of First-Order Logic over Finite WordsInternational Journal of Foundations of Computer Science. 19:513–548. 2008.
- Word equations over graph productsInternational Journal of Algebra and Computation. 18:493–533. 2008.
- Word Equations over Graph ProductsInternational Journal of Algebra and Computation. 18(3):493-533. 2008.
- Partially commutative inverse monoidsSemigroup Forum. 77(2):196–226. 2008.
- Algorithmic Problems on Inverse Monoids over Virtually Free GroupsInternational Journal of Algebra and Computation. 18(1):181–208. 2008.
- Unbordered factors and Lyndon words.Discrete Mathematics. 308(11):2261–2264. 2008.
- On the Complexity of Consistency and Complete State Coding for Signal Transition GraphsFundamenta Informaticae. 86(3):227–253. IOS Press, 2008.
- Bordered Conjugates of Words over Large AlphabetsElectronic Journal of Combinatorics. 15(1) 2008.
- On the Relation between Periodicity and Unbordered Factors of Finite Words5257:408–418. Springer, 2008.
Conference Articles
- PartnerschaftsvermittlungTaschenbuch der Algorithmen, pages 373-384. Springer-Verlag, 2008.
- The Height of Factorization ForestsMathematical Foundations of Computer Science 2008, 33rd International Symposium, MFCS 2008, Toruń, Poland, August 25-29, 2008, Proceedings, volume 5162 of Lecture Notes in Computer Science, pages 443–454. Springer-Verlag, 2008.
- Element distinctness and sorting on one-tape off-line Turing machinesProc. 34th International Conference on Current Trends in Theory and Practice in Computer Science, Nový Smokovec, Slovakia, January 19-25, 2008, Proceedings, volume 4910 of Lecture Notes in Computer Science, pages 406–417. Springer-Verlag, 2008.
- Improved bounds for range mode and range median queriesProc. 34th International Conference on Current Trends in Theory and Practice in Computer Science, Nový Smokovec, Slovakia, January 19-25, 2008, Proceedings, volume 4910 of Lecture Notes in Computer Science, pages 418–423. Springer-Verlag, 2008.
proceedings
- Theory of Computing Systems: Special Issue of the 1st International Symposium on Computer Science in Russia, St. Petersburg 2006, ProceedingsSpringer, 2008.
Book Chapters
- First-order definable languagesLogic and Automata: History and Perspectives, Texts in Logic and Games, pages 261–306. Amsterdam University Press, 2008.
- PartnerschaftsvermittlungTaschenbuch der Algorithmen, pages 373–384. Springer, 2008.
- Resource bounded frequency computations with three errorsComputing and combinatorics, volume 5092 of Lecture Notes in Computer Science, pages 72–81. Springer, 2008.
2007
Journal Articles
- Polynomials, Fragments of Temporal Logic and the Variety over TracesTheoretical Computer Science. 376:89–100. 2007.
- On First-Order Fragments for Mazurkiewicz TracesFundamenta Informaticae. 80(1-3):1–29. 2007.
- Periodicity and Unbordered Words: A Proof of the Extended Duval ConjectureJournal of the ACM. 54 ACM, 2007.
- Inverse monoids: decidability and complexity of algebraic questionsInformation and Computation . 205(8):1212–1234. 2007.
Conference Articles
- On First-Order Fragments for Words and Mazurkiewicz Traces: A SurveyDevelopments in Language Theory, 11th International Conference, DLT 2007, Turku, Finland, July 3-6, 2007, Proceedings, volume 4588 of Lecture Notes in Computer Science, pages 1–19. Springer-Verlag, 2007.
- On the Complexity of Reasoning about Dynamic PoliciesProc. of Computer Science Logic 2007, volume 4646 of Lecture Notes in Computer Science, pages 358–373. Springer, 2007.
- PDL with Intersection and Converse is 2EXP-completeProceedings of FoSSaCS 2007, volume 4423 of Lecture Notes in Computer Science, pages 198–212. Springer, 2007.
- Maximal Intersection Queries in Randomized Input ModelsSecond International Symposium on Computer Science in Russia, CSR 2007, Ekaterinburg, Russia, September 3-7, 2007, Proceedings, volume 4649 of Lecture Notes in Computer Science, pages 227–236. Springer, 2007.
- Estimation of the Click Volume by Large Scale Regression AnalysisSecond International Symposium on Computer Science in Russia, CSR 2007, Ekaterinburg, Russia, September 3-7, 2007, Proceedings, volume 4649 of Lecture Notes in Computer Science, pages 216–226. Springer, 2007.
- Height-Deterministic Pushdown AutomataMathematical Foundations of Computer Science 2007, 32nd International Symposium, MFCS 2007, Český Krumlov, Czech Republic, August 26-31, 2007, Proceedings, volume 4708 of Lecture Notes in Computer Science, pages 125–134. Springer-Verlag, 2007.
- String Matching with Simple Devicespages 32–34. 2007.
Technical Reports
- A Proof of the Factorization Forest TheoremTechnical report, Document number: 2007/05. Formale Methoden der Informatik, Universität Stuttgart, October 2007.
proceedings
- Computer Science - Theory and Applications, Second International Symposium on Computer Science in Russia, CSR 2007, Ekaterinburg, Russia, September 3-7, 2007, Proceedingsvolume 4649 of Lecture Notes in Computer Science. Springer, 2007.
2006
Journal Articles
- Pure future local temporal logics are expressively complete for Mazurkiewicz tracesInformation and Computation. 204:1597–1619. 2006.
- Solvability of Equations in Free Partially Commutative Groups is DecidableInternational Journal of Algebra and Computation. 16:1047–1070. 2006.
- Word Problems and Membership Problems on Compressed WordsSIAM J. Comput.. 35(5):1210-1240. 2006.
- From local to global temporal logics over Mazurkiewicz tracesTheoretical Computer Science. 356(1–2):125–135. 2006.
- The complexity of tree automata and XPath on grammar-compressed treesTheoretical Computer Science. 363(2):196–210. Elsevier Science Publishers Ltd., 2006.
- Logical Aspects of Cayley-Graphs: The Monoid CaseInternational Journal of Algebra and Computation. 16:307–340. 2006.
- Backing Up in Singly Linked ListsJournal of the ACM. 53 ACM, 2006.
Conference Articles
- Polynomials, Fragments of Temporal Logic and the Variety over TracesProc. of the 10th Int. Conf. on Developments in Language Theory (DLT’06), volume 4036 of Lecture Notes in Computer Science, pages 37–48. Springer-Verlag, 2006.
- Partially commutative inverse monoidsProceedings of the 31th International Symposium on Mathematical Foundations of Computer Science (MFCS 2006), Bratislave (Slovakia), volume 4162 of Lecture Notes in Computer Science, pages 292–304. Springer-Verlag, 2006.
- Theories of HNN-Extensions and Amalgamated ProductsICALP, pages 504–515. 2006.
- On the Complexity of Consistency and Complete State Coding for Signal Transition Graphs2010 10th International Conference on Application of Concurrency to System Designi (ACSD’06), pages 47–56. IEEE Computer Society, 2006.
- Infinite-state model-checking of Propositional Dynamic LogicsProc. of Computer Science Logic 2006, volume 4207 of Lecture Notes in Computer Science, pages 349–364. Springer, 2006.
- Querying and Embedding Compressed TextsProceedings of the 31th International Symposium on Mathematical Foundations of Computer Science (MFCS 2006), Bratislave (Slovakia), volume 4162 of Lecture Notes in Computer Science, pages 681–692. Springer-Verlag, 2006.
- Monadic chain logic over iterations and applications to pushdown systemsProceedings of the 21st Annual IEEE Symposium on Logic in Computer Science (LICS’10), pages 91–100. IEEE Computer Society Press, 2006.
- First-order and counting theories of -automatic structuresProceedings of FoSSaCS 2006, volume 3921 of Lecture Notes in Computer Science, pages 322–336. Springer, 2006.
Theses
- Logical Fragments for Mazurkiewicz Traces: Expressive Power and Algebraic CharacterizationsDissertation, Institut für Formale Methoden der Informatik, Universität Stuttgart, 2006.
proceedings
- Theory of Computing Systems: Special Issue of the 21st International Symposium on Theoretical Aspects of Computer Science (STACS’04), Montpellier 2004, ProceedingsSpringer, 2006.
Book Chapters
- Computable Lower Bounds for Busy Beaver Turing MachinesRecent Advances in Formal Languages and Applications, volume 25 of Studies in Computational Intelligence, pages 305–319. Springer-Verlag, 2006.
2005
Journal Articles
- Regular Frequency ComputationsTheoretical Computer Science. 330(1):15–21. 2005.
- The existential theory of equations with rational constraints in free groups is PSPACE-completeInformation and Computation. 202:105–140. 2005.
- Logical aspects of Cayley-graphs: the group caseAnn. Pure Appl. Logic. 131(1-3):263–286. 2005.
- Complexity Results for Prefix GrammarsRAIRO. Informatique Théorique et Applications. 39(3):391–401. 2005.
Conference Articles
- Inverse monoids: decidability and complexity of algebraic questionsProceedings of the 30th International Symposium on Mathematical Foundations of Computer Science (MFCS 2005), Gdansk (Poland), volume 3618 of Lecture Notes in Computer Science, pages 664–675. Springer-Verlag, 2005.
- Fixpoint logics on hierarchical structuresFSTTCS 2005: Foundations of Software Technology and Theoretical Computer Science, volume 3821 of Lecture Notes in Computer Science, pages 483–494. Springer, 2005.
- Decidable first-order theories of one-step rewriting in trace monoidsTheory of Computing Systems, pages 39–81. Springer, 2005.
proceedings
- Proceedings of the 22nd Annual Symposium on Theoretical Aspects of Computer Science (STACS’05), Stuttgart (Germany)volume 3404 of Lecture Notes in Computer Science. Springer-Verlag, 2005.
2004
Journal Articles
- Existential and Positive Theories of Equations in Graph ProductsTheory of Computing Systems. 37:133–156. 2004.
- Local temporal logic is expressively complete for cograph dependence alphabetsInformation and Computation. 195:30–52. 2004.
- Decidability and complexity in automatic monoids3340:308–320. Springer, 2004.
- Word problems on compressed words3142:906–918. Springer, 2004.
- Bounded MSC communicationInformation and Computation. 189(2):160–181. Elsevier Science Publishers Ltd., 2004.
- A Note on Rebound Turing MachinesInternational Journal of Foundations of Computer Science. 15(05):791–807. 2004.
Conference Articles
- Pure future Local Temporal Logics are expressively complete for Mazurkiewicz TracesProceedings of the 6th Latin American Theoretical Informatics Symposium (LATIN’04), Buenos Aires, volume 2976 of Lecture Notes in Computer Science, pages 232–241. Springer-Verlag, 2004.
- Sublogarithmic Ambiguity29th International Symposium, MFCS 2004, Prague, Czech Republic, August 22-27, 2004, Proceedings, volume 3153 of Lecture Notes in Computer Science, pages 794–806. Springer, 2004.
proceedings
- Proc. 21st Annual Symposium on Theoretical Aspects of Computer Science (STACS’04), Montpellier (France)volume 2996 of Lecture Notes in Computer Science. Springer-Verlag, 2004.
2003
Journal Articles
- A Structural Property of Regular Frequency ComputationsTheoretical Computer Science. 292(1):33–43. 2003.
- Realizability of high-level message sequence charts: closing the gapsTheoretical Computer Science. 309(1-3):529–554. Elsevier Science Publishers Ltd., 2003.
- Automatic structures of bounded degree2850:344–358. Springer, 2003.
- Element distinctness and sorting on one-tape off-line Turing machines: a complete solutionActa Informatica. 40(2):81–94. Springer-Verlag, 2003.
Conference Articles
- A Remark about Quadratic Trace EquationsDevelopments in Language Theory: DLT 2002, Kyoto, Japan, volume 2450 of Lecture Notes in Computer Science, pages 59–66. Springer-Verlag, 2003.
- Word equations over graph productsProceedings of the 23rd Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2003), Mumbai (India), volume 2914 of Lecture Notes in Computer Science, pages 156–167. Springer-Verlag, 2003.
- Decidable theories of Cayley-Graphs20th Annual Symposium on Theoretical Aspects of Computer Science, Berlin, Germany, February 27 - March 1, 2003, (STACS 2003). Proceedings, volume 2607 of Lecture Notes in Computer Science, pages 463–474. Springer, 2003.
2002
Journal Articles
- LTL is expressively complete for Mazurkiewicz tracesJournal of Computer and System Sciences. 64:396–418. 2002.
- A note on the existential theory of equations in plain groupsInternational Journal of Algebra and Computation. 12:1–7. 2002.
- Safe realizability of high-level message sequence charts2421:177–192. Springer, 2002.
- Axiomatising Divergence2380:585–596. Springer, 2002.
- On the theory of one-step rewriting in trace monoids2380:752–763. Springer, 2002.
- Bounded MSC communication2303:295–309. Springer, 2002.
- Universal Inherence of Cycle-Free Context-Free Ambiguity Functions2380:669–680. Springer, 2002.
Conference Articles
- A Pure Future Local Temporal Logic Beyond Cograph-MonoidsProc. RIMS Symposium on Algebraic Systems, Formal Languages and Conventional and Unconventional Computation Theory, Kyoto, Japan 2002, pages . 2002.
- Existential and Positive Theories of Equations in Graph ProductsProc. 19th Annual Symposium on Theoretical Aspects of Computer Science (STACS’02), Juan les Pin (France), 2002, volume 2285 of Lecture Notes in Computer Science, pages 501–512. Springer-Verlag, 2002.
- Survey of Decision Problems for Regular Expressions10th International Conference on Automata and Formal Languages (AFL’02), Debrecen, 2002. Proceedings, 2002.
- The Membership Problem for Regular Expressions with Intersection is Complet e in LOGCFL19th Annual Symposium on Theoretical Aspects of Computer Science, Antibes - Juan les Pins, France, March 14-16, 2002, Proceedings, volume 2285 of Lecture Notes in Computer Science, pages 513–522. Springer-Verlag, 2002.
Book Chapters
- Safety and Liveness Properties for Real Traces and a Direct Translation from LTL to MonoidsFormal and Natural Computing — Essays Dedicated to Grzegorz Rozenberg, volume 2300 of Lecture Notes in Computer Science, pages 26–38. Springer-Verlag, 2002.
- Makanin’s AlgorithmAlgebraic Combinatorics on Words, volume 90 of Encyclopedia of Mathematics and Its Applications, Chapter 12, pages 387–442. Cambridge University Press, 2002.
2001
Journal Articles
- The Existential Theory of Equations with Rational Constraints in Free Groups is PSPACE-CompleteComputing Research Repository (arXiv eprints). cs.DS/0103018 2001.
- Bounded MSC communicationInformation and Computation. 170(1):1–25. Elsevier Science Publishers Ltd., 2001.
- Word Problems for 2-Homogeneous Monoids and Symmetric Logspace2136:500–511. Springer, 2001.
- Characterization of Context-Free Languages with Polynomially Bounded Ambiguity2136:703–714. Springer, 2001.
Conference Articles
- Local Temporal Logic is Expressively Complete for Cograph Dependence AlphabetsProc. 8th International Conference on Logic for Programming, Artificial Intelligence and Reasoning (LPAR’01), Havanna (Cuba), volume 2250 of Lecture Notes in Computer Science, pages 55–69. Springer-Verlag, 2001.
- The existential theory of equations with rational constraints in free groups is PSPACE-completeProc. 18th Annual Symposium on Theoretical Aspects of Computer Science (STACS’01), Dresden (Germany), 2001, volume 2010 of Lecture Notes in Computer Science, pages 170–182. Springer-Verlag, 2001.
- Solvability of Equations in Free Partially Commutative Groups is DecidableProc. 28th Internationaldl0 Colloquium Automata, Languages and Programming (ICALP’01), volume 2076 of Lecture Notes in Computer Science, pages 543–554. Springer-Verlag, 2001.
- On the Parallel Complexity of Tree AutomataProceedings of the 12th International Conference on Rewrite Techniques and Applications (RTA 2001), Utrecht (The Netherlands), volume 2051 of Lecture Notes in Computer Science, pages 201–215. Springer-Verlag, 2001.
Theses
- Wortgleichungen in hyperbolischen GruppenDiplomarbeit Nr. 1922, Fakultät Informatik, 2001.
2000
Journal Articles
- Algebraic acceptance mechanisms for polynomial time machinesSIGACT News. 31(2):22–33. 2000.
- QuantencomputerInformatik-Spektrum. 23(5):322–324. 2000.
- A note on closure properties of logspace MOD classesInformation Processing Letters. 75(3):91–93. 2000.
- Implementing Luby’s Algorithm on the Cray T3E:467–477. Springer, 2000.
Conference Articles
- On Regular Frequency ComputationsProc. RIMS Symposium on Algebraic Systems, Formal Languages and Computation, Kyoto, Japan, pages 35–42. 2000.
- LTL is expressively complete for Mazurkiewicz tracesProc. 27th International Colloquium Automata, Languages and Programming (ICALP’2000), Geneva (Switzerland), volume 1853 of Lecture Notes in Computer Science, pages 211–222. Springer-Verlag, 2000.
- Sublinear AmbiguityProc. 25th International Symposium on Mathematical Foundations of Computer Science (MFCS’2000), Bratislava (Slovakia), 2000, volume 1893 of Lecture Notes in Computer Science, pages 690–698. Springer Verlag, 2000.
- Exponential Ambiguity of Context-free GrammarsProc. 4th International Conference on Developments in Language Theory, July 1999, pages 125–138. World Scientific, Singapore, 2000.
1999
Journal Articles
- Solving word equations modulo partial commutationsTheoretical Computer Science. 224:215–235. 1999.
- Matching Specifications for Message Sequence Charts1578:273–287. Springer, 1999.
Conference Articles
- An Expressively Complete Temporal Logic without Past Tense Operators for Mazurkiewicz TracesProc. 13th Computer Science Logic (CSL’99), Madrid (Spain) 1999, volume 1683 of Lecture Notes in Computer Science, pages 188–203. Springer-Verlag, 1999.
- Some Identities Related to Automata, Determinants, and Möbius FunctionsAlgebraic Engineering, Proc. International Workshop on Formal Languages and Computer Systems, Kyoto, Japan, 18–21 March 1997, and the First International Conference on Semigroups and Algebraic Engineering, Aizu, Japan, 24–28 March 1997, pages 330–349. World Scientific, 1999.
- On Quadratic Word EquationsProc. 16th Annual Symposium on Theoretical Aspects of Computer Science (STACS’99), Trier (Germany), volume 1563 of Lecture Notes in Computer Science, pages 217–226. Springer-Verlag, 1999.
Book Chapters
- Quadratic word equationsJewels are forever – Contributions on Theoretical Computer Science in Honor of Arto Salomaa, pages 314–326. Springer-Verlag, 1999.
- Generalized Regular Counting ClassesMathematical foundations of computer science 1999 (Szklarska Poreba), volume 1672 of Lecture Notes in Computer Science, pages 419–429. Springer, 1999.
- Complexity Results for Confluence ProblemsMathematical foundations of computer science 1999 (Szklarska Poreba), volume 1672 of Lecture Notes in Computer Science, pages 114–124. Springer, 1999.
Theses
- Decision and complexity issues on concurrent systemsHabilitationsschrift (Postdoctoral thesis), Universität Stuttgart, 1999.
1998
Journal Articles
- Characterization of the Expressive Power of Silent Transitions in Timed AutomataFundamenta Informaticae. 36:145–182. 1998.
- The Chain Method to Separate Counting ClassesTheory Computing Systems. 31(1):93–108. 1998.
- Approximating TracesActa Informatica. 35:567–593. 1998.
- Nonfinite axiomatizability of the equational theory of shuffleActa Informatica. 35:505–539. 1998.
- NP-Completeness Results Concerning the Transformation of Logic Programs into Attribute GrammarsActa Cybernetica. 13(3):209–224. 1998.
- Priority and maximal progress are completely axiomatisable (extended abstract)1466:237–252. Springer, 1998.
- Deciding properties for message sequence charts1378:226–242. Springer, 1998.
Conference Articles
- Computing -Free NFA from Regular Expressions in TimeMathematical Foundations of Computer Science 1998, 23rd International Symposium, MFCS’98, Brno, Czech Republic, August 24-28, 1998, Proceedings, volume 1450 of Lecture Notes in Computer Science, pages 277–285. Springer, 1998.
- On the Confluence of Trace Rewriting SystemsFSTTCS 1998: Foundations of Software Technology and Theoretical Computer Science, volume 1530 of Lecture Notes in Computer Science, pages 319–330. Springer, 1998.
Book Chapters
- The Inherent Dimension of Bounded Counting ClassesComputing and combinatorics (Taipei, 1998), volume 1449 of Lecture Notes in Computer Science, pages 157–166. Springer, 1998.
1997
Journal Articles
- The code problem for traces – improving the boundariesTheoretical Computer Science. 172(1-2):309–321. 1997.
Conference Articles
- Removing -Transitions in Timed AutomataProc. 14th Annual Symposium on Theoretical Aspects of Computer Science (STACS’97), Lübeck (Germany), 1997, volume 1200 of Lecture Notes in Computer Science, pages 583–594. Springer-Verlag, 1997.
- Solving trace equations using lexicographical normal formsProc. 24th International Colloquium Automata, Languages and Programming (ICALP’97), Bologna, volume 1256 of Lecture Notes in Computer Science, pages 336–347. Springer-Verlag, 1997.
- About the local detection of termination of local computations in graphsSIROCCO’97, 4th International Colloquium on Structural Information & Communication Complexity, Monte Verita, Ascona, Switzerland, July 24-26, 1997, pages 188–200. Carleton Scientific, 1997.
- The Equivalence of Pebbles and Sensing Heads for Finite AutomataFundamentals of computation theory (Kraków, 1997), volume 1279 of Lecture Notes in Computer Science, pages 400–410. Springer, 1997.
- Homomorphic Images of Sentential Forms and Terminating Grammars22nd International Symposium, MFCS’97, Bratislava, Slovakia, August 25-29, 1997, Proceedings, volume 1295 of Lecture Notes in Computer Science, pages 448–457. Springer, 1997.
Book Chapters
- A Remark on Trace EquationsFoundations of Computer Science, volume 1337 of Lecture Notes in Computer Science, pages 251–260. Springer-Verlag, 1997.
- Partial Commutation and TracesHandbook of Formal Languages, Volume 3: Beyond Words., pages 457–533. 1997.
- Acceptance by Transformation Monoids (with an Application to Local Self Reductions)Twelfth Annual IEEE Conference on Computational Complexity (Ulm, 1997), pages 213–224. IEEE Computer Society, 1997.
- Polynomial Time Machines Equipped with Word Problems over Algebraic Structures as their Acceptance CriteriaFundamentals of computation theory (Kraków, 1997), volume 1279 of Lecture Notes in Computer Science, pages 233–244. Springer, 1997.
- The Shapes of TreesComputing and combinatorics (Shanghai, 1997), volume 1276 of Lecture Notes in Computer Science, pages 412–421. Springer, 1997.
Technical Reports
- A Census Technique for Simple Computing DevicesTechnical Report, Document number: 1997/07. Universität Stuttgart, Fakultät Informatik, 1997.
1996
Journal Articles
- A note on Métivier’s construction of asynchronous automata for triangulated graphsFundamenta Informaticae. 25:241–246. 1996.
- Logical definability on infinite tracesTheoretical Computer Science. 154:67–84. 1996.
- On the complementation of asynchronous cellular Büchi automataTheoretical Computer Science. 169(2):123–145. Elsevier Science Publishers Ltd., 1996.
- A Note on the Commutative Closure of Star-Free LanguagesInformation Processing Letters. 57(2):71–74. 1996.
- On Balanced vs. Unbalanced Computation TreesMath. Systems Theory. 29(4):411–421. 1996.
Conference Articles
- Trace rewriting: Computing normal forms in time .Proc. 13th Annual Symposium on Theoretical Aspects of Computer Science (STACS’96), Grenoble (France), volume 1046 of Lecture Notes in Computer Science, pages 269–280. Springer-Verlag, 1996.
- Recent developments in trace theoryDevelopments in Language Theory II, pages 373–385. World Scientific, 1996.
- Code problems on tracesProc. 21st Symposium on Mathematical Foundations of Computer Science (MFCS’96), Cracow (Poland), volume 1113 of Lecture Notes in Computer Science, pages 2–17. Springer-Verlag, 1996.
- The power of programs with restricted control structurePreproceedings of WCCL’96, volume 1 of Preprint-Reihe Mathematik, pages 56–58. Ernst-Moritz-Arndt-Universität, 1996.
1995
Journal Articles
- Rational and recognizable complex trace languagesInformation and Computation. 116:134–153. 1995.
- On Confluence of One-Rule Trace-Rewriting SystemsMathematical Systems Theory. 28:341–361. 1995.
- The Tautologies over a Finite Set are Context-FreeBulletin of the European Association for Theoretical Computer Science. 57 1995.
Conference Articles
- Efficient rewriting in cograph trace monoidsProc. 10th Fundamentals of Computation Theory (FCT ’95), Dresden (Germany) 1995, volume 965 of Lecture Notes in Computer Science, pages 146–155. Springer-Verlag, 1995.
- On efficient reduction-algorithms for some trace rewriting systemsTerm Rewriting, volume 909 of Lecture Notes in Computer Science, pages 114–126. Springer-Verlag, 1995.
- A Domain for Concurrent Termination: A Generalization of Mazurkiewicz tracesProc. 22nd International Colloquium Automata, Languages and Programming (ICALP’95), Szeged, volume 944 of Lecture Notes in Computer Science, pages 15–26. Springer-Verlag, 1995.
- On Codings of TracesProc. 12th Annual Symposium on Theoretical Aspects of Computer Science (STACS’95), Munich (Germany), volume 900 of Lecture Notes in Computer Science, pages 385–396. Springer-Verlag, 1995.
- Recent Developments in Trace TheoryDevelopments in Language Theory II, pages 373–385. World Scientific, 1995.
- Classes of Bounded Counting Type and their Inclusion RelationsSTACS 95 (Munich, 1995), volume 900 of Lecture Notes in Computer Science, pages 60–70. Springer, 1995.
- On the Power of Number-Theoretic Operations with Respect to CountingStructure in Complexity Theory Conference, pages 299–314. 1995.
- Some Results Concerning Two-Dimensional Turing Machines and Finite AutomataProc. 10th Fundamentals of Computation Theory (FCT ’95), Dresden (Germany) 1995, volume 965 of Lecture Notes in Computer Science, pages 374–382. Springer-Verlag, 1995.
- Alternation in simple devicesProc. 22nd International Colloquium Automata, Languages and Programming (ICALP’95), Szeged, volume 944 of Lecture Notes in Computer Science, pages 315–323. Springer-Verlag, 1995.
- Counting and empty alternating pushdown automataProc. 7th International Meeting of Young Computer Scientists, Smolenice, Czechoslovakia, 16-20 November 1992 (IMYCS’92), 1995.
Book Chapters
- KomplexitätstheorieTeubner Taschenbuch der Mathematik, Teil II, pages 65–79. Teubner, 1995.
- Construction of Asynchronous AutomataThe Book of Traces, Chapter 8, pages 249–267. World Scientific, 1995.
Books
- The Book of TracesWorld Scientific, 1995.
1994
Journal Articles
- A partial trace semantics for Petri netsTheoretical Computer Science. 134:87–105. 1994.
- Deterministic asynchronous automata for infinite tracesActa Informatica. 31:379–397. 1994.
- On confluent semi-commutation systems — decidability and complexity resultsInformation and Computation. 110:164–182. 1994.
- Depth Reduction for Circuits of Unbounded Fan-InInformation and Computation. 112(2):217–238. 1994.
Conference Articles
- Partial TracesWords, Languages and Combinatorics II (Kyoto, Japan 1992), pages 87–97. World Scientific, Singapore, 1994.
- On the complementation of Büchi asynchronous cellular automataProc. 21st International Colloquium Automata, Languages and Programming (ICALP’94), Jerusalem, volume 820 of Lecture Notes in Computer Science, pages 142–153. Springer-Verlag, 1994.
- Complexity Classes Defined via k-valued FunctionsStructure in Complexity Theory Conference, pages 224–234. 1994.
- Complexity Classes with Finite Acceptance TypeSTACS 94 (Caen, 1994), volume 775 of Lecture Notes in Computer Science, pages 543–553. Springer, 1994.
Theses
- Charakterisierung von Sprachklassen unendlicher Spuren durch LogikenDissertation, Institut für Informatik, Universität Stuttgart, 1994.
- Über die Erkennbarkeit unendlicher SpurenPhD thesis, Institut für Informatik, Universität Stuttgart, 1994.
1993
Journal Articles
- On the concatenation of infinite tracesTheoretical Computer Science. 113:35–54. 1993.
- Möbius functions and confluent semi-commutationsTheoretical Computer Science. 108:25–43. 1993.
- Almost-everywhere Complexity Hierarchies for Nondeterministic TimeTheoretical Computer Science. 115(2):225–241. 1993.
Conference Articles
- Rewriting, semi-commutations, and Möbius functionsProc. 9th Fundamentals of Computation Theory (FCT’93), Szeged (Hungary) 1993, volume 710 of Lecture Notes in Computer Science, pages 1–15. Springer-Verlag, 1993.
- Complex and complex-like tracesProc. 18th Symposium on Mathematical Foundations of Computer Science (MFCS’93), Gdansk (Poland), 1993, volume 711 of Lecture Notes in Computer Science, pages 68–82. Springer-Verlag, 1993.
- Deterministic asynchronous automata for infinite tracesProc. 10th Annual Symposium on Theoretical Aspects of Computer Science (STACS’93), Würzburg (Germany), 1993, volume 665 of Lecture Notes in Computer Science, pages 617–628. Springer-Verlag, 1993.
- Logical definability on infinite tracesProc. 20th International Colloquium Automata, Languages and Programming (ICALP’93), Lund, volume 700 of Lecture Notes in Computer Science, pages 335–346. Springer-Verlag, 1993.
- On the Power of Polynomial Time Bit-ReductionsProceedings of the Eighth Annual Structure in Complexity Theory Conference (San Diego, CA, 1993), pages 200–207. IEEE Comput. Soc. Press, 1993.
1992
Journal Articles
- Mathematical aspects of trace theoryMitt. Math. Ges. Hamburg. 12:1171–1181. 1992.
- Structure and Importance of Logspace-MOD-ClassesMath. Systems Theory. 25(3):223–237. 1992.
Conference Articles
- Möbius functions and confluent semi-commutation systemsWords, Languages and Combinatorics (Kyoto, Japan 1990), pages 119–130. World Scientific, Singapore, 1992.
- On logical definability of -trace languagesProceedings ASMICS Workshop Infinite Traces, Tübingen, Bericht 4/92, pages 106–122. Universität Stuttgart, Fakultät Informatik, 1992.
- One-Rule Trace-Rewriting Systems and ConfluenceProc. 17th Symposium on Mathematical Foundations of Computer Science (MFCS’92), Prague (Czechoslovakia), 1992, volume 629 of Lecture Notes in Computer Science, pages 511–521. Springer-Verlag, 1992.
- Locally Definable Acceptance Types for Polynomial Time MachinesSTACS 92 (Cachan, 1992), volume 577 of Lecture Notes in Computer Science, pages 199–207. Springer, 1992.
- Locally Definable Acceptance Types — The Three-Valued CaseLATIN ’92 (São Paulo, 1992), volume 583 of Lecture Notes in Computer Science, pages 262–271. Springer, 1992.
- Sorting in-place with a worst case complexity of comparisons and transportsThird International Symposium, ISAAC ’92, Nagoya, Japan, December 16-18, 1992. Proceedings, volume 650 of Lecture Notes in Computer Science, pages 489–498. Springer-Verlag, 1992.
1991
Journal Articles
- On “inherently context-sensitive” languages – An application of complexity coresInformation Processing Letters. 40:21–23. 1991.
Conference Articles
- Recognizable complex trace languagesProc. 16th Symposium on Mathematical Foundations of Computer Science (MFCS’91), Kazimierz Dolny (Poland), 1991, volume 520 of Lecture Notes in Computer Science, pages 131–140. Springer-Verlag, 1991.
- On the concatenation of infinite tracesProc. 8th Annual Symposium on Theoretical Aspects of Computer Science (STACS’91), Hamburg (Germany), 1991, volume 480 of Lecture Notes in Computer Science, pages 105–117. Springer-Verlag, 1991.
- On confluent semi-commutation systems — decidability and complexity resultsProc. 18th International Colloquium Automata, Languages and Programming (ICALP’91), Madrid, volume 510 of Lecture Notes in Computer Science, pages 229–241. Springer-Verlag, 1991.
- Interactive Proof Systems: Provers, Rounds, and Error BoundsComputer science logic (Heidelberg, 1990), volume 533 of Lecture Notes in Computer Science, pages 261–273. Springer, 1991.
Book Chapters
- Structure and importance of logspace-mod-classesSTACS 91 (Hamburg, 1991), volume 480 of Lecture Notes in Computer Science, pages 360–371. Springer, 1991.
1990
Journal Articles
- Research topics in the theory of free partially commutative monoidsBulletin of the European Association for Theoretical Computer Science (EATCS). 40:479–491. Febuary 1990.
- Word problems over traces which are solvable in linear timeTheoretical Computer Science. 74:3–18. 1990.
- Relations among MOD-classesTheoretical Computer Science. 74(3):325–328. Elsevier Science Publishers Ltd., 1990.
Conference Articles
- Combinatorial rewriting on tracesProc. 7th Annual Symposium on Theoretical Aspects of Computer Science (STACS’90), Rouen (France), 1990, volume 415 of Lecture Notes in Computer Science, pages 138–151. Springer-Verlag, 1990.
- A Note on the Almost-Everywhere Hierarchy for Nondeterministic TimeSTACS 90 (Rouen, 1990), volume 415 of Lecture Notes in Computer Science, pages 1–11. Springer, 1990.
- Counting Classes: Thresholds, Parity, Mods, and FewnessSTACS 90 (Rouen, 1990), volume 415 of Lecture Notes in Computer Science, pages 49–57. Springer, 1990.
Books
- Combinatorics on TracesIn volume 454 of Lecture Notes in Computer Science. Springer-Verlag, 1990.
Book Chapters
- On the Power of Uniform Families of Constant Depth Threshold CircuitsMathematical foundations of computer science (Banská Bystrica, 1990), volume 452 of Lecture Notes in Computer Science, pages 158–164. Springer, 1990.
1989
Journal Articles
- On the Knuth-Bendix completion for concurrent processesTheoretical Computer Science. 66:117–136. 1989.
- Hotz-isomorphism theorems in Formal Language TheoryR.A.I.R.O. — Informatique Théorique et Applications. 23:29–43. 1989.
- On the synchronization of tracesMathematical Systems Theory. 22:161–175. 1989.
Conference Articles
- Word problems over traces which are solvable in linear timeProc. 6th Annual Symposium on Theoretical Aspects of Computer Science (STACS 1989), Paderborn (Germany), volume 349 of Lecture Notes in Computer Science, pages 168–180. Springer-Verlag, 1989.
1988
Conference Articles
- Transitive orientations, Möbius functions and complete semi-Thue systems for free partially commutative monoidsProc. 15th International Colloquium Automata, Languages and Programming (ICALP’88), Tampere, volume 317 of Lecture Notes in Computer Science, pages 176–187. Springer-Verlag, 1988.
- Small deterministic Turing machinesProc. 2nd Conference on Automata, Languages and Programming Systems, Salgótarján (Hungary) 1988, pages 77–87. Department of Mathematics, Karl Marx University of Economics, 1988.
- Hotz-isomorphism theorems in Formal Language TheoryProc. 5th Annual Symposium on Theoretical Aspects of Computer Science (STACS’88), Bordeaux (France), 1988, volume 294 of Lecture Notes in Computer Science, pages 126–135. Springer-Verlag, 1988.
- Local checking of trace synchronizabilityProc. 13th Symposium on Mathematical Foundations of Computer Science (MFCS’88), Carlsbad (Czechoslovakia), 1988, volume 324 of Lecture Notes in Computer Science, pages 271–279. Springer-Verlag, 1988.
1987
Journal Articles
- On some variants of the Ehrenfeucht conjectureTheoretical Computer Science. 46:313–318. 1987.
Conference Articles
- On the Knuth-Bendix completion for concurrent processesProc. 14th International Colloquium Automata, Languages and Programming (ICALP’87), Karlsruhe, volume 267 of Lecture Notes in Computer Science, pages 42–53. Springer-Verlag, 1987.
- Some remarks on presentations by finite Church-Rosser Thue systemsProc. 4th Annual Symposium on Theoretical Aspects of Computer Science (STACS’87), Passau (Germany), volume 247 of Lecture Notes in Computer Science, pages 272–285. Springer-Verlag, 1987.
Technical Reports
- Two contributions to the theory of finite replacement systemsReport, Document number: TUM-I8710. Institut für Informatik der Technischen Universität München, 1987.
1986
Journal Articles
- Eine Bemerkung zu freien Moduln über regulären lokalen RingenJournal of Algebra. 101:188–189. 1986.
- Investigations of Hotz groups for arbitrary grammarsActa Informatica. 22(6):679–698. 1986.
- Complete semi-Thue systems for abelian groupsTheoretical Computer Science. 44:199–208. 1986.
- Commutative monoids have complete presentations by free (non-commutative) monoidsTheoretical Computer Science. 46:319–327. 1986.
1985
Conference Articles
- A complete non-preperfect presentation of a context-free monoidCombinatorial Algorithms in Algebraic Structures, pages 60–66. Fachbereich Informatik der Universität Kaiserslautern, 1985.
- On Hotz groups and homomorphic images of sentential form languagesProc. 2nd Annual Symposium on Theoretical Aspects of Computer Science (STACS’85), Saarbrücken (Germany), 1985, volume 182 of Lecture Notes in Computer Science, pages 87–97. Springer-Verlag, 1985.
1984
Journal Articles
- Über die absolute Galoisgruppe dyadischer ZahlkörperJournal für die reine und angewandte Mathematik. 350:152–172. 1984.
1983
Journal Articles
- Demuškin-Erzeugende und Einbettungsprobleme elementar abelscher -Erweiterungen zwei-adischer ZahlkörperAbhandlungen aus dem Mathematischen Seminar der Universität Hamburg. 53:28–38. Springer, 1983.
1981
Journal Articles
- Abelsche p-Erweiterungen -adischer Zahlkörper, über denen jedes Einbettungsproblem lösbar istJournal für die reine und angewandte Mathematik. 323:101–104. 1981.