A note on finitely generated commutative rings Marian Kechlibar; Tomáš Kepka; Juha Kortelainen — 2005 Acta Universitatis Carolinae. Mathematica et Physica
Ordinary selfdistributive rings Sobhy Ghoneim; Marian Kechlibar; Tomáš Kepka — 2005 Commentationes Mathematicae Universitatis Carolinae Left selfdistributive rings (i.e., x y z = x y x z ) which are semidirect sums of boolean rings and rings nilpotent of index at most 3 are studied.
Commutative semigroups with few fully invariant congruences II. Robert El Bashir; Tomáš Kepka; Marian Kechlibar — 2005 Acta Universitatis Carolinae. Mathematica et Physica
Commutative semigroups with few fully invariant congruences I. Robert El Bashir; Tomáš Kepka; Marian Kechlibar — 2005 Acta Universitatis Carolinae. Mathematica et Physica