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Author: Chajda, Ivan

• Chajda, Ivan: The axioms for implication in orthologic. (English). Czechoslovak Mathematical Journal, vol. 58 (2008), issue 1, pp. 15-21
• Chajda, Ivan; Kühr, Jan: Join-semilattices whose sections are residuated po-monoids. (English). Czechoslovak Mathematical Journal, vol. 58 (2008), issue 4, pp. 1107-1127
• Chajda, Ivan; Šešelja, Branimir; Tepavčević, Andreja: A note on triangular schemes for weak congruences. (English). Czechoslovak Mathematical Journal, vol. 55 (2005), issue 3, pp. 683-690
• Chajda, Ivan; Länger, Helmut: A note on normal varieties of monounary algebras. (English). Czechoslovak Mathematical Journal, vol. 52 (2002), issue 2, pp. 369-373
• Chajda, Ivan: Semiregularity of congruences implies congruence modularity at 0. (English). Czechoslovak Mathematical Journal, vol. 52 (2002), issue 2, pp. 333-336
• Chajda, Ivan; Rachůnek, Jiří: Annihilators in normal autometrized algebras. (English). Czechoslovak Mathematical Journal, vol. 51 (2001), issue 1, pp. 111-120
• Chajda, Ivan; Duda, Jaromír: Compact universal relation in varieties with constants. (English). Czechoslovak Mathematical Journal, vol. 47 (1997), issue 1, pp. 173-178
• Chajda, Ivan; Halaš, Radomír; Machala, František: Congruences and ideals in ternary rings. (English). Czechoslovak Mathematical Journal, vol. 47 (1997), issue 1, pp. 163-172
• Chajda, Ivan: Pseudosemirings induced by ortholattices. (English). Czechoslovak Mathematical Journal, vol. 46 (1996), issue 3, pp. 405-411
• Chajda, Ivan: Tolerances on $q$-lattices. (English). Czechoslovak Mathematical Journal, vol. 46 (1996), issue 1, pp. 21-28
• Chajda, Ivan: Semilattices of finite arithmetical algebras. (English). Czechoslovak Mathematical Journal, vol. 45 (1995), issue 4, pp. 659-662
• Chajda, Ivan: A characterization of arithmetical varieties by two-element subsets. (English). Czechoslovak Mathematical Journal, vol. 44 (1994), issue 3, pp. 521-522
• Chajda, Ivan: Characterizations of Hamiltonian algebras. (English). Czechoslovak Mathematical Journal, vol. 42 (1992), issue 3, pp. 487-489
• Chajda, Ivan: Varieties with modular and distributive lattices of symmetric or reflexive relations. (English). Czechoslovak Mathematical Journal, vol. 42 (1992), issue 4, pp. 623-630
• Chajda, Ivan: Varieties having distributive lattices of quasiorders. (English). Czechoslovak Mathematical Journal, vol. 41 (1991), issue 1, pp. 85-89
• Chajda, Ivan: Weak coherence of congruences. (English). Czechoslovak Mathematical Journal, vol. 41 (1991), issue 1, pp. 149-154
• Chajda, Ivan: On the existence of non-trivial tolerances in permutable algebras. (English). Czechoslovak Mathematical Journal, vol. 40 (1990), issue 4, pp. 598-600
• Chajda, Ivan; Pondělíček, Bedřich: Algebras with tolerance extension property in 0. (English). Czechoslovak Mathematical Journal, vol. 39 (1989), issue 1, pp. 142-146
• Chajda, Ivan: On Grätzer's problem of binary 1-step congruence schemes. (English). Czechoslovak Mathematical Journal, vol. 39 (1989), issue 3, pp. 470-476
• Chajda, Ivan: Principal tolerances on lattices. (English). Czechoslovak Mathematical Journal, vol. 39 (1989), issue 1, pp. 176-180
• Chajda, Ivan: Algebras whose principal congruences form a sublattice of the congruence lattice. (English). Czechoslovak Mathematical Journal, vol. 38 (1988), issue 4, pp. 585-588
• Chajda, Ivan; Zelinka, Bohdan: Tolerances and congruences on implication algebras. (English). Czechoslovak Mathematical Journal, vol. 38 (1988), issue 2, pp. 207-217
• Chajda, Ivan: Tolerances in congruence permutable algebras. (English). Czechoslovak Mathematical Journal, vol. 38 (1988), issue 2, pp. 218-225
• Chajda, Ivan; Zelinka, Bohdan: A characterization of tolerance-distributive tree semilattices. (English). Czechoslovak Mathematical Journal, vol. 37 (1987), issue 2, pp. 175-180
• Chajda, Ivan: Weakly regular algebras in varieties with principal compact congruences. (English). Czechoslovak Mathematical Journal, vol. 36 (1986), issue 1, pp. 140-146
• Chajda, Ivan; Zelinka, Bohdan: Directly decomposable tolerances on direct products of lattices and semilattices. (English). Czechoslovak Mathematical Journal, vol. 33 (1983), issue 4, pp. 519-521
• Chajda, Ivan; Rachůnek, Jiří: Relational characterizations of permutable and $n$-permutable varieties. (English). Czechoslovak Mathematical Journal, vol. 33 (1983), issue 4, pp. 505-508
• Chajda, Ivan; Nieminen, Juhani: Direct decomposability of tolerances on lattices, semilattices and quasilattices. (English). Czechoslovak Mathematical Journal, vol. 32 (1982), issue 1, pp. 110-115
• Chajda, Ivan; Nieminen, Juhani: Atomicity of tolerance lattices. (English). Czechoslovak Mathematical Journal, vol. 30 (1980), issue 4, pp. 606-609
• Chajda, Ivan: Polynomially determined tolerances. (English). Czechoslovak Mathematical Journal, vol. 30 (1980), issue 3, pp. 470-473,474
• Chajda, Ivan: Decompositions of homomorphisms. (English). Czechoslovak Mathematical Journal, vol. 29 (1979), issue 4, pp. 568-572
• Chajda, Ivan; Zelinka, Bohdan: Tolerances and convexity. (English). Czechoslovak Mathematical Journal, vol. 29 (1979), issue 4, pp. 584-587
• Chajda, Ivan: Homomorphisms of direct products of algebras. (English). Czechoslovak Mathematical Journal, vol. 28 (1978), issue 1, pp. 155-170
• Chajda, Ivan: Two constructions of compatible relations. (English). Czechoslovak Mathematical Journal, vol. 28 (1978), issue 3, pp. 439-444
• Chajda, Ivan; Zelinka, Bohdan: Minimal compatible tolerances on lattices. (English). Czechoslovak Mathematical Journal, vol. 27 (1977), issue 3, pp. 452-459
• Chajda, Ivan; Niederle, Josef; Zelinka, Bohdan: On existence conditions for compatible tolerances. (English). Czechoslovak Mathematical Journal, vol. 26 (1976), issue 2, pp. 304-311
• Chajda, Ivan; Zelinka, Bohdan: Weakly associative lattices and tolerance relations. (English). Czechoslovak Mathematical Journal, vol. 26 (1976), issue 2, pp. 259-269
• Chajda, Ivan: Systems of equations and tolerance relations. (English). Czechoslovak Mathematical Journal, vol. 25 (1975), issue 2, pp. 302-308