Author: Länger, Helmut

Chajda, Ivan; Länger, Helmut: Orthomodular Posets Can Be Organized as Conditionally Residuated Structures. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 53 (2014), issue 2, pp. 29-33
Chajda, Ivan; Länger, Helmut: Quotients and homomorphisms of relational systems. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 49 (2010), issue 2, pp. 37-47
Chajda, Ivan; Dorfer, Gerhard; Länger, Helmut: Local versions of some congruence properties in single algebras. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 43 (2004), issue 1, pp. 65-73
Chajda, Ivan; Länger, Helmut: A simple basis of ideal terms of Brouwerian semilattices. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 40 (2001), issue 1, pp. 37-42

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