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Direct decomposability of congruences in congruence-permutable varieties Ivan Chajda (1982) Mathematica Slovaca
Direct decomposability of tolerances and congruences on semigroups Bedřich Pondělíček (1988) Czechoslovak Mathematical Journal
Direct decomposability of tolerances on lattices, semilattices and quasilattices Ivan Chajda, Juhani Nieminen (1982) Czechoslovak Mathematical Journal
Directly decomposable congruences in varieties with nullary operations Ivan Chajda (1987) Mathematica Slovaca
Directly decomposable tolerances on direct products of lattices and semilattices Ivan Chajda, Bohdan Zelinka (1983) Czechoslovak Mathematical Journal
Distributive groupoids and preradicals. I. Tomáš Kepka (1983) Commentationes Mathematicae Universitatis Carolinae
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Distributivity and modularity of lattices of quasiorders Ivan Chajda, Josef Zedník (2003) Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
Does 𝐒𝐏 K ⊇ 𝐏𝐒 K imply axiom of choice? Hajnal Andréka, István Németi (1980) Commentationes Mathematicae Universitatis Carolinae
Double p -algebras with Stone congruence lattices Michael E. Adams, Rodney Beazer (1991) Czechoslovak Mathematical Journal