Kominek, Zygfryd Fix-point free affine transformations having invariant lines. (English) Zbl 1289.51022 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 41, 37-42 (2013). MSC: 51N20 PDF BibTeX XML Cite \textit{Z. Kominek}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 41, 37--42 (2013; Zbl 1289.51022) Full Text: Link
Ger, Roman; Kominek, Zygfryd An interplay between Jensen’s and Pexider’s functional equations on semigroups. (English) Zbl 1240.39054 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 35, 107-124 (2011). MSC: 39B52 20M14 PDF BibTeX XML Cite \textit{R. Ger} and \textit{Z. Kominek}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Comput. 35, 107--124 (2011; Zbl 1240.39054)