Čulik, Karel II; Karhumäki, Juhani On the equality sets for homomorphisms on free monoids with two generators. (English) Zbl 0454.20048 RAIRO, Inf. Théor. 14, 349-369 (1980). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 ReviewsCited in 14 Documents MSC: 20M05 Free semigroups, generators and relations, word problems 68Q45 Formal languages and automata Keywords:periodic homomorphisms on free monoids; equations in free monoids; Post’s Correspondence Problem; equality set; periodicity forcing sets Citations:Zbl 0371.20047 PDF BibTeX XML Cite \textit{K. Čulik II} and \textit{J. Karhumäki}, RAIRO, Inf. Théor. 14, 349--369 (1980; Zbl 0454.20048) OpenURL