Coinductive big-step operational semantics

Abstract : Using a call-by-value functional language as an example, this article illustrates the use of coinductive definitions and proofs in big-step operational semantics, enabling it to describe diverging evaluations in addition to terminating evaluations. We formalize the connections between the coinductive big-step semantics and the standard small-step semantics, proving that both semantics are equivalent. We then study the use of coinductive big-step semantics in proofs of type soundness and proofs of semantic preservation for compilers. A methodological originality of this paper is that all results have been proved using the Coq proof assistant. We explain the proof-theoretic presentation of coinductive definitions and proofs offered by Coq, and show that it facilitates the discovery and the presentation of the results.
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Information and Computation, Elsevier, 2009, 207 (2), pp.284-304. <10.1016/j.ic.2007.12.004>
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Xavier Leroy, Hervé Grall. Coinductive big-step operational semantics. Information and Computation, Elsevier, 2009, 207 (2), pp.284-304. <10.1016/j.ic.2007.12.004>. <inria-00309010>

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