Branching vs. Linear Time: Semantical Perspective

Author Moshe Y. Vardi

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Moshe Y. Vardi

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Moshe Y. Vardi. Branching vs. Linear Time: Semantical Perspective. In Computer Science Logic (CSL'11) - 25th International Workshop/20th Annual Conference of the EACSL. Leibniz International Proceedings in Informatics (LIPIcs), Volume 12, p. 3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)


The discussion of the relative merits of linear- versus branching-time frameworks goes back to the early 1980s. We revisit here this issue from a fresh perspective and postulate three principles that we view as fundamental to any discussion of process equivalence. We show that our principles yield a unique notion of process equivalence, which is trace based, rather than tree based.
  • linear time
  • branching time
  • process equivalence
  • contextual equivalence


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