TY - JOUR A1 - Hoare, C. A. R. A1 - Hussain, Akbar A1 - Möller, Bernhard A1 - O’Hearn, Peter W. A1 - Lerchedahl Petersen, Rasmus A1 - Struth, Georg T1 - On locality and the exchange law for concurrent processes T2 - Lecture Notes in Computer Science N2 - This paper studies algebraic models for concurrency, in light of recent work on Concurrent Kleene Algebra and Separation Logic. It clarifies that there is a strong connection between the Concurrency and Frame Rules of Separation Logic and a variants of the excahnge law of Category Theory. The algebraic laws admit two standard models: one uses sets of traces, and the other is state-based, using assertions and weakest preconditions. We relate the latter to standard models of the heap as a partial function. We exploit the power of algebra to unify models and classify their variations. Y1 - 2011 UR - https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/58779 UR - https://nbn-resolving.org/urn:nbn:de:bvb:384-opus4-587790 SN - 9783642232169 SN - 9783642232176 SN - 0302-9743 SN - 1611-3349 VL - 6901 SP - 250 EP - 264 PB - Springer CY - Berlin ER -