TY - UNPD A1 - Schmidt-Schauß, Manfred A1 - Sabel, David T1 - Closures of may and must convergence for contextual equivalence T2 - Technical report Frank / Johann-Wolfgang-Goethe-Universität, Fachbereich Informatik und Mathematik, Institut für Informatik ; 35 N2 - We show on an abstract level that contextual equivalence in non-deterministic program calculi defined by may- and must-convergence is maximal in the following sense. Using also all the test predicates generated by the Boolean, forall- and existential closure of may- and must-convergence does not change the contextual equivalence. The situation is different if may- and total must-convergence is used, where an expression totally must-converges if all reductions are finite and terminate with a value: There is an infinite sequence of test-predicates generated by the Boolean, forall- and existential closure of may- and total must-convergence, which also leads to an infinite sequence of different contextual equalities. T3 - Technical report Frank / Johann-Wolfgang-Goethe-Universität, Fachbereich Informatik und Mathematik, Institut für Informatik - 35 KW - Formale Semantik KW - Programmkalküle KW - Programmkorrektheit KW - formal semantics KW - programming calculi KW - program correctness Y1 - 2008 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/6176 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-61000 UR - http://www.ki.informatik.uni-frankfurt.de/papers/frank/frank35maymust.pdf IS - 12 SP - 12 EP - 1 PB - Johann Wolfgang Goethe-Univ., Fachbereich Informatik und Mathematik, Inst. für Informatik, Research group for Artificial Intelligence and Software Technology CY - Frankfurt [am Main] ER -