Chuchman, Ivan On a semigroup of closed connected partial homeomorphisms of the unit interval with a fixed point. (English) Zbl 1258.20051 Algebra Discrete Math. 12, No. 2, 38-52 (2011). MSC: 20M20 54H15 20M18 PDFBibTeX XMLCite \textit{I. Chuchman}, Algebra Discrete Math. 12, No. 2, 38--52 (2011; Zbl 1258.20051)
Chuchman, Ivan; Gutik, Oleg On H-closed topological semigroups and semilattices. (English) Zbl 1164.06332 Algebra Discrete Math. 2007, No. 1, 29-39 (2007). MSC: 06F30 06A12 22A15 22A26 54H12 PDFBibTeX XMLCite \textit{I. Chuchman} and \textit{O. Gutik}, Algebra Discrete Math. 2007, No. 1, 29--39 (2007; Zbl 1164.06332)