@Article{ kuf07tcs, author = "Manfred Kufleitner", title = "Polynomials, Fragments of Temporal Logic and the Variety {$\mathrm{DA}$} over Traces", journal = "Theoretical Computer Science", note = "Special issue DLT~2006", year = "2007", volume = "376", pages = "89--100", doi = "10.1016/j.tcs.2007.01.014" }