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Equations implying congruence n-permutability and semidistributivity

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Title: Equations implying congruence n-permutability and semidistributivity
Authors: Freese, Ralph
Keywords: n-permutability, semidistributivity, congruence lattice
Issue Date: 08 Feb 2013
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Abstract: T. Dent, K. Kearnes and A. Szendrei de ne the derivative, 0, of a
set of equations and show, for idempotent , that implies congruence modularity
if 0 is inconsistent ( 0 j= x y). In this paper we investigate other types of
derivatives that give similar results for congruence n-permutable for some n, and for
congruence semidistributivity.
Pages/Duration: 11
Rights: Attribution-NonCommercial-NoDerivs 3.0 United States
Appears in Collections:Ralph Freese
Freese, Ralph

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