The weak pigeonhole principle for function classes in S12

Mathematical Logic Quarterly 52 (6):575-584 (2006)
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Abstract

It is well known that S12 cannot prove the injective weak pigeonhole principle for polynomial time functions unless RSA is insecure. In this note we investigate the provability of the surjective weak pigeonhole principle in S12 for provably weaker function classes

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References found in this work

Structure and definability in general bounded arithmetic theories.Chris Pollett - 1999 - Annals of Pure and Applied Logic 100 (1-3):189-245.
Dual weak pigeonhole principle, Boolean complexity, and derandomization.Emil Jeřábek - 2004 - Annals of Pure and Applied Logic 129 (1-3):1-37.
Multifunction algebras and the provability of PH↓.Chris Pollett - 2000 - Annals of Pure and Applied Logic 104 (1-3):279-303.
On the bounded version of Hilbert's tenth problem.Chris Pollett - 2003 - Archive for Mathematical Logic 42 (5):469-488.

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