Uniform Short Proofs for Classical Theorems

Kees Doets

doi:10.1305/ndjfl/1054837939

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Home > Journals > Notre Dame J. Formal Logic > Volume 42 > Issue 2 > Article

2001 Uniform Short Proofs for Classical Theorems

Kees Doets

Notre Dame J. Formal Logic 42(2): 121-127 (2001). DOI: 10.1305/ndjfl/1054837939

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Abstract

This note exploits back-and-forth characteristics to construct, using a single method, short proofs for ten classics of first-order and modal logic: interpolation theorems, preservation theorems, and Lindström's theorem.

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Kees Doets. "Uniform Short Proofs for Classical Theorems." Notre Dame J. Formal Logic 42 (2) 121 - 127, 2001. https://doi.org/10.1305/ndjfl/1054837939