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Published in:
2000 | OriginalPaper | Chapter
Action Contraction
Author : Arend Rensink
Published in: CONCUR 2000 — Concurrency Theory
Publisher: Springer Berlin Heidelberg
Included in: Professional Book Archive
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The question we consider in this paper is: “When can a combination of fine-grain execution steps be contracted into an atomic action execution”? Our answer is basically: “When no observer can see the difference.” This is worked out in detail by defining a notion of coupled split/atomic simulation refinement between systems which differ in the atomicity of their actions, and proving that this collapses to Parrow and Sjödin’s coupled similarity when the systems are composed with an observer.