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Definitional Expansions in Mizar

In memoriam of Andrzej Trybulec, a pioneer of computerized formalization

Journal of Automated Reasoning volume 55, pages257–268(2015)Cite this article

Abstract

The Mizar Verifier uses definitional expansions for controlling proof structures. In this paper we propose another use of definitional expansions—enriching verified inferences by expansions of definitions of formulae included in the inferences and increasing the number of premises accessible by Checker. This introduces more knowledge to the reasoning, which helps to draw more conclusions. Some statistics about influence of such expansions on the Mizar Mathematical Library are presented.

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Affiliations

  1. Institute of Informatics, University of Białystok, K. Ciołkowskiego 1M, 15-245, Białystok, Poland

    Artur Korniłowicz

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  1. Artur Korniłowicz
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Correspondence to Artur Korniłowicz.

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Korniłowicz, A. Definitional Expansions in Mizar. J Autom Reasoning 55, 257–268 (2015). https://doi.org/10.1007/s10817-015-9331-7

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Keywords

  • Proof assistant
  • Formal verification
  • Definitional expansion
  • Mizar