Who Finds the Short Proof?

Logic Journal of the IGPL (forthcoming)
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Abstract

This paper reports on an exploration of Boolos’ Curious Inference, using higher-order automated theorem provers (ATPs). Surprisingly, only suitable shorthand notations had to be provided by hand for ATPs to find a short proof. The higher-order lemmas required for constructing a short proof are automatically discovered by the ATPs. Given the observations and suggestions in this paper, full proof automation of Boolos’ and related examples now seems to be within reach of higher-order ATPs.

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Christoph Benzmueller
Freie Universität Berlin

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References found in this work

A formulation of the simple theory of types.Alonzo Church - 1940 - Journal of Symbolic Logic 5 (2):56-68.
A curious inference.George Boolos - 1987 - Journal of Philosophical Logic 16 (1):1 - 12.
Don't eliminate cut.George Boolos - 1984 - Journal of Philosophical Logic 13 (4):373 - 378.
The Higher-Order Prover LEO-II.Christoph Benzmüller, Nik Sultana, Lawrence C. Paulson & Frank Theiß - 2015 - Journal of Automated Reasoning 55 (4):389-404.
The logic languages of the TPTP world.Geoff Sutcliffe - 2023 - Logic Journal of the IGPL 31 (6):1153-1169.

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