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dc.contributor.authorGrathwohl, Niels Bjørn Bugge
dc.contributor.authorKozen, Dexter
dc.contributor.authorMamouras, Konstantinos
dc.description.abstractIt is known that certain program transformations require a small amount of mutable state, a feature not explicitly provided by Kleene algebra with tests (KAT). In this paper we show how to axiomatically extend KAT with this extra feature in the form of mutable tests. The extension is conservative and is formulated as a general commutative coproduct construction. We give several results on deductive completeness and complexity of the system, as well as some examples of its use.en_US
dc.description.sponsorshipDanish Council for Independent Research, Project 11-106278, ``Kleene Meets Church (KMC): Regular Expressions and Types.''en_US
dc.subjectKleene algebraen_US
dc.subjectKleene algebra with testsen_US
dc.subjectprogram schematologyen_US
dc.titleKAT + B!en_US
dc.typetechnical reporten_US

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