TY - CHAP EP - 74 ID - eprints357 N2 - A possible approach to studying behavioural equivalences in labelled transition systems is that of characterizing them in terms of homomorphic transformations. This characterization permits relying on algebraic techniques for proving systems properties and reduces equivalence checking of two systems to studying the relationships among the elements of their structures. Different algebraic characterizations of bisimulation-based equivalences in terms of particular transition systems homomorphisms have been proposed in the literature. Here we show, by an example, that trace-based equivalences are not locally characterizable and thus that the above results cannot be extended to these equivalences. However, similar results can be obtained if we confine ourselves to restricted classes of transition systems. Here, the algebraic characterizations of three well known decorated-trace equivalences (ready trace, ready and failure equivalence) for tree-like structures are presented. ED - Meyer auf der Heide, Friedhelm ED - Monien, Burkhard SN - 3-540-61440-0 T2 - Automata, Languages and Programming (ICALP 1996) PB - Springer T3 - Lecture Notes in Computer Science TI - Algebraic Characterizations of Decorated Trace Equivalences over Tree-Like Structures SP - 63 AV - none Y1 - 1996/// M1 - 1099 A1 - Chen, Xiao Jun A1 - De Nicola, Rocco UR - http://dx.doi.org/10.1007/3-540-61440-0_117 ER -