Modular Bisimulation Theory for Computations and Values
Modular Bisimulation Theory for Computations and Values
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用于计算和值的模块化互模拟理论
DOI:
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发表时间:
2013
期刊:
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通讯作者:
Peter D. Mosses
中科院分区:
文献类型:
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作者:
Martin Churchill;Peter D. Mosses
For structural operational semantics (SOS) of process algebras, various notions of bisimulation have been studied, together with rule formats ensuring that bisimilarity is a congruence. For programming languages, however, SOS generally involves auxiliary entities (e.g. stores) and computed values, and the standard bisimulation and rule formats are not directly applicable.
Here, we first introduce a notion of bisimulation based on the distinction between computations and values, with a corresponding liberal congruence format. We then provide metatheory for a modular variant of SOS (MSOS) which provides a systematic treatment of auxiliary entities. This is based on a higher order form of bisimulation, and we formulate an appropriate congruence format. Finally, we show how algebraic laws can be proved sound for bisimulation with reference only to the (M)SOS rules defining the programming constructs involved in them. Such laws remain sound for languages that involve further constructs.