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Jie Fang - Ockham algebras with pseudocomplementation



JIE FANG, Department of Mathematics, Simon Fraser University, Burnaby, British Columbia  V5A 1S6, Canada
Ockham algebras with pseudocomplementation


The variety ${\bf pO}$ consists of those algebras $(L, \land, \lor,
f,
\star, 0, 1)$ of type $\langle 2, 2, 1, 1, 0, 0\rangle$, where $(L,
\land, \lor, f, 0, 1)$ is an Ockham algebra, $(L, \land, \lor, \star,
0, 1)$ is a p-algebra, and the unary operations f and $\star$commute. We describe the structure of the subdirectly irreducible algebras that belong to the subclass ${\bf pK}_{1,1}$ characterised by the property f3=f, and give a description of the lattice of subvarieties of ${\bf pK}_{1,1}$.



 

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