1. A note on congruence kernels in ortholattices Creator: Chajda, Ivan Format: bez média and svazek Type: model:article and TEXT Subject: ortholattice, congruence, kernel, and ideal Language: English Description: We characterize ideals of ortholattices which are congruence kernels. We show that every congruence class determines a kernel. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
2. Strong endomorphism kernel property for monounary algebras Creator: Halušková, Emília Format: bez média and svazek Type: model:article and TEXT Subject: (strong) endomorphism, congruence, kernel, connected monounary algebra, and cycle Language: English Description: All monounary algebras which have strong endomorphism kernel property are described. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public