Lyapin, E. S. On the existence and uniqueness of a solution to the general type of equation in connection with reversibility in semigroups of transformations. (Russian) Zbl 0099.01101 Dokl. Akad. Nauk SSSR 116, 552-555 (1957). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Keywords:group theory PDF BibTeX XML Cite \textit{E. S. Lyapin}, Dokl. Akad. Nauk SSSR 116, 552--555 (1957; Zbl 0099.01101)