• DML-CZ Home

08B15 Lattices of varieties (44 articles)

• Ježek, Jaroslav: Definability for equational theories of commutative groupoids. (English). Czechoslovak Mathematical Journal, vol. 62 (2012), issue 2, pp. 305-333
• Pilitowska, Agata: Linear identities in graph algebras. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 50 (2009), issue 1, pp. 11-24
• Chajda, I.; Cheng, W.; Wismath, S. L.: 2-normalization of lattices. (English). Czechoslovak Mathematical Journal, vol. 58 (2008), issue 3, pp. 577-593
• Vernikov, Boris M.: On modular elements of the lattice of semigroup varieties. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 48 (2007), issue 4, pp. 595-606
• Ježek, J.: Slim groupoids. (English). Czechoslovak Mathematical Journal, vol. 57 (2007), issue 4, pp. 1275-1288
• Ćirić, M.; Petković, T.; Bogdanović, S.: Subdirect products of certain varieties of unary algebras. (English). Czechoslovak Mathematical Journal, vol. 57 (2007), issue 2, pp. 573-578
• Ježek, J.: Varieties of idempotent slim groupoids. (English). Czechoslovak Mathematical Journal, vol. 57 (2007), issue 4, pp. 1289-1309
• Demlová, Marie; Koubek, Václav: On universality of semigroup varieties. (English). Archivum Mathematicum, vol. 42 (2006), issue 4, pp. 357-386
• Ježek, Jaroslav; Kepka, Tomáš: Selfdistributive groupoids. Part D1: Left distributive semigroups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 47 (2006), issue 1, pp. 15-56
• Ježek, J.; Slavík, V.: Compact elements in the lattice of varieties. (English). Mathematica Bohemica, vol. 130 (2005), issue 1, pp. 107-110
• Koubek, V.; Sichler, J.: Finitely generated almost universal varieties of $0$-lattices. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 46 (2005), issue 2, pp. 301-325
• Thron, R.; Koppitz, J.: Lattice-theoretically characterized classes of finite bands. (English). Archivum Mathematicum, vol. 39 (2003), issue 1, pp. 1-10
• Jakubík, Ján: On varieties of pseudo $MV$-algebras. (English). Czechoslovak Mathematical Journal, vol. 53 (2003), issue 4, pp. 1031-1040
• Chajda, Ivan; Länger, Helmut: A note on normal varieties of monounary algebras. (English). Czechoslovak Mathematical Journal, vol. 52 (2002), issue 2, pp. 369-373
• Jakubíková-Studenovská, Danica: Antiatomic retract varieties of monounary algebras. (English). Czechoslovak Mathematical Journal, vol. 48 (1998), issue 4, pp. 793-808
• Medvedev, N. Ya.; Morozova, S. V.: On covers in the lattice of representable $\ell$-varieties. (English). Czechoslovak Mathematical Journal, vol. 48 (1998), issue 4, pp. 821-831
• Kuřil, Martin: A multiplication of e-varieties of regular $E$-solid semigroups by inverse semigroup varieties. (English). Archivum Mathematicum, vol. 33 (1997), issue 3, pp. 279-299
• Jakubíková-Studenovská, Danica: Retract varieties of monounary algebras. (English). Czechoslovak Mathematical Journal, vol. 47 (1997), issue 4, pp. 701-716
• Draškovičová, Hilda: Modular median algebras generated by some partial modular median algebras. (English). Mathematica Slovaca, vol. 46 (1996), issue 4, pp. 405-412
• Medvedev, Nikolaj Ja.: On automorphisms of the lattice of quasivarieties of lattice-ordered groups. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 35 (1996), issue 1, pp. 131-135
• Vaggione, Diego: On Jónsson's theorem. (English). Mathematica Bohemica, vol. 121 (1996), issue 1, pp. 55-58
• Kuřil, Martin: A multiplication of $e$-varieties of orthodox semigroups. (English). Archivum Mathematicum, vol. 31 (1995), issue 1, pp. 43-54
• Denecke, K.; Koppitz, J.: Pre-solid varieties of semigroups. (English). Archivum Mathematicum, vol. 31 (1995), issue 3, pp. 171-181
• Drápal, Aleš; Kepka, Tomáš; Musílek, Michal: Group conjugation has non-trivial LD-identities. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 35 (1994), issue 2, pp. 219-222
• Krapež, A.; Taylor, M. A.: Irreducible Belousov equations on quasigroups. (English). Czechoslovak Mathematical Journal, vol. 43 (1993), issue 1, pp. 157-175
• Haviar, Alfonz: $V$-Lattices of varieties of algebras of different types. (English). Czechoslovak Mathematical Journal, vol. 43 (1993), issue 3, pp. 419-428
• Jakubík, Ján: On convexities of lattices. (English). Czechoslovak Mathematical Journal, vol. 42 (1992), issue 2, pp. 325-330
• Pondělíček, Bedřich: Subalgebra modular, distributive and boolean varieties of semigroups. (English). Czechoslovak Mathematical Journal, vol. 42 (1992), issue 4, pp. 757-764
• Ježek, Jaroslav; Newrly, Norbert; Tůma, Jiří: Remarks on equational theories of semilattices with operators. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 31 (1990), issue 3, pp. 415-425
• Ježek, Jaroslav: Minimal bounded varieties. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 29 (1988), issue 2, pp. 261-265
• Chajda, Ivan: Algebras with principal tolerances. (English). Mathematica Slovaca, vol. 37 (1987), issue 2, pp. 169-172
• Ježek, Jaroslav: The lattice of equational theories. Part IV: Equational theories of finite algebras. (English). Czechoslovak Mathematical Journal, vol. 36 (1986), issue 2, pp. 331-341
• Schweigert, Dietmar: Distributive associative near lattices. (English). Mathematica Slovaca, vol. 35 (1985), issue 4, pp. 313-317
• Jakubík, Ján: On radical classes of Abelian linearly ordered groups. (English). Mathematica Slovaca, vol. 35 (1985), issue 2, pp. 141-154
• Medvedev, N.Ya.: О решётке $o$-аппроксимируемых $\ell$-многообразий. (Russian) [On the lattice of $o$-approximable $\ell$-varieties]. Czechoslovak Mathematical Journal, vol. 34 (1984), issue 1, pp. 6-17
• Pringerová, Gabriela: Covering condition in the lattice of radical classes of linearly ordered groups. (English). Mathematica Slovaca, vol. 33 (1983), issue 4, pp. 363-369
• Płonka, Jerzy: Subdirectly irreducible groupoids in some varieties. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 24 (1983), issue 4, pp. 631-645
• Ježek, Jaroslav: The lattice of equational theories. Part III: Definability and automorphisms. (English). Czechoslovak Mathematical Journal, vol. 32 (1982), issue 1, pp. 129-164
• Ježek, Jaroslav: The number of minimal varieties of idempotent groupoids. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 23 (1982), issue 1, pp. 199-205
• Ježek, Jaroslav: The lattice of equational theories. Part I: Modular elements. (English). Czechoslovak Mathematical Journal, vol. 31 (1981), issue 1, pp. 127-152
• Ježek, Jaroslav: The lattice of equational theories. Part II: The lattice of full sets of terms. (English). Czechoslovak Mathematical Journal, vol. 31 (1981), issue 4, pp. 573-603
• Cornish, William H.: A ternary variety generated by lattices. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 22 (1981), issue 4, pp. 773-784
• Lee, Sin Min: On a simple one-element extension of left zero semigroups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 21 (1980), issue 2, pp. 313-318
• Ježek, Jaroslav: Upper semicomplements and a definable element in the lattice of groupoid varieties. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 12 (1971), issue 3, pp. 565-586