Author:
Adams M. E.,Bulman-Fleming Sydney,Gould Matthew,Wildsmith Amy
Abstract
For a finite semilattice S, is is proved that if every noninvertible endomorphism is a product of idempotents, then S is a chain; the converse was proved, independently, by A. Ya. Aĭzenštat and J. M. Howie. For a finite pseudocomplemented semilattice S, with pseudocomplementation regarded as a unary operation, it is proved that all noninvertible endomorphisms are products of idempotents if and only if S is Boolean or a chain.
Publisher
Cambridge University Press (CUP)
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