Titlebook: Recent Trends in Algebraic Development Techniques; 23rd IFIP WG 1.3 Int Phillip James,Markus Roggenbach Conference proceedings 2017 IFIP In

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An Institution for Event-Bhe theory of institutions. Many formalisms have been improved in this way and our aim is thus to define an appropriate institution for Event-B, which we call .. We provide a definition of . and the proof of its satisfaction condition. A motivating example of a traffic-light simulation is presented to illustrate our approach.

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On the Most Suitable Axiomatization of?Signed?Integershe Peano-style construction of unsigned naturals using “zero” and “succ” to the case of signed integers. We compare the various approaches used in CADP, CASL, Coq, Isabelle/HOL, KIV, Maude, mCRL2, PSF, SMT-LIB, TLA+, etc. according to objective criteria and suggest an “optimal” definition of signed integers.

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A Calculus of Virtually Timed Ambientstimed ambients is defined as an extension of bisimulation for mobile ambients. We show that the equivalence of contextual bisimulation and reduction barbed congruence is preserved by weak timed bisimulation. The calculus of virtually timed ambients is illustrated by examples.

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Asymmetric Combination of Logics is Functorial: A Surveyns. They range from the problem of combining translations (between logics), to that of ensuring property preservation along the process, and the way different asymmetric combinations can be related through appropriate natural transformations.

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Formalizing and Validating the P-Store Replicated Data Store in Maudecommunication commitment and defines an abstract Maude model of atomic multicast, both of which are key building blocks in many data store designs. Maude model checking analysis uncovered a non-trivial error in P-Store; this paper also formalizes a correction of P-Store whose analysis did not uncover any flaw.

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Advances in Verification of Multi-agent Systemslel approaches?[.], and SAT-based methods?[.]..I then demonstrated MCMAS?[., .], an open-source BDD-based model checker supporting these specification languages. A case study concerning the verification of diagnosability and fault-tolerance of an autonomous underwater vehicle was discussed?[., .] as

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