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Hereditary undecidability of some theories of finite structures

Published online by Cambridge University Press:  12 March 2014

Ross Willard*
Affiliation:
Department of Pure Mathematics, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, E-mail: rdwillar@flynn.uwaterloo.ca

Abstract

Using a result of Gurevich and Lewis on the word problem for finite semigroups, we give short proofs that the following theories are hereditarily undecidable: (1) finite graphs of vertex-degree at most 3; (2) finite nonvoid sets with two distinguished permutations; (3) finite-dimensional vector spaces over a finite field with two distinguished endomorphisms.

Type
Research Article
Copyright
Copyright © Association for Symbolic Logic 1994

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References

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