1. Commutative idempotent residuated lattices Creator: Stanovský, David Format: bez média and svazek Type: model:article and TEXT Subject: residuated lattice, semilattice, finitely based variety, and minimal variety Language: English Description: We investigate the variety of residuated lattices with a commutative and idempotent monoid reduct. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
2. Homomorphic images of finite subdirectly irreducible unary algebras Creator: Ježek, Jaroslav, Marković, P., and Stanovský, David Format: bez média and svazek Type: model:article and TEXT Subject: subdirectly irreducible unary algebra Language: English Description: We prove that a finite unary algebra with at least two operation symbols is a homomorphic image of a (finite) subdirectly irreducible algebra if and only if the intersection of all its subalgebras which have at least two elements is nonempty. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public