Comprehending Isabelle/HOL's Consistency
Comprehending Isabelle/HOL's Consistency
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理解 Isabelle/HOL 的一致性
DOI:
10.1007/978-3-662-54434-1_27
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Andrei Popescu
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文献类型:
--
作者:
Ondřej Kunčar;Andrei Popescu
The proof assistant Isabelle/HOL is based on an extension of Higher-Order Logic (HOL) with ad hoc overloading of constants. It turns out that the interaction between the standard HOL type definitions and the Isabelle-specific ad hoc overloading is problematic for the logical consistency. In previous work, we have argued that standard HOL semantics is no longer appropriate for capturing this interaction, and have proved consistency using a nonstandard semantics. The use of an exotic semantics makes that proof hard to digest by the community. In this paper, we prove consistency by proof-theoretic means—following the healthy intuition of definitions as abbreviations, realized in HOLC, a logic that augments HOL with comprehension types. We hope that our new proof settles the Isabelle/HOL consistency problem once and for all. In addition, HOLC offers a framework for justifying the consistency of new deduction schemas that address practical user needs.
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影响因子:
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