Portugaliæ Mathematica   EMIS ELibM Electronic Journals PORTUGALIAE
MATHEMATICA
Vol. 51, No. 1, pp. 141-146 (1994)

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A Subdirectly Irreducible Symmetric Heyting Algebra which is not Simple

A. Galli and M. Sagastume

Dep. de Matemática, Facultad de Ciencias Exactas, Universidad Nacional de La Plata,
C.C. 172, 1900 La Plata - ARGENTINA

Abstract: The aim of this paper is to provide a negative answer to the question of whether every subdirectly irreducible symmetric Heyting algebra (that is a Heyting algebra with a De Morgan negation) is simple or not.

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Electronic version published on: 29 Mar 2001. This page was last modified: 27 Nov 2007.

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