Schwarz, Štefan Unions of powers of binary relations. (Russian) Zbl 0286.20075 Mat. Čas., Slovensk. Akad. Vied 24, 161-171 (1974). MSC: 20M10 05C20 08A05 03E20 PDFBibTeX XMLCite \textit{Š. Schwarz}, Mat. Čas., Slovensk. Akad. Vied 24, 161--171 (1974; Zbl 0286.20075) Full Text: EuDML
Schwarz, Štefan Algebraic considerations on powers of stochastic matrices. (English) Zbl 0176.30506 Mat. Čas., Slovensk. Akad. Vied 18, 218-228 (1968). MSC: 15B51 60B20 PDFBibTeX XMLCite \textit{Š. Schwarz}, Mat. Čas., Slovensk. Akad. Vied 18, 218--228 (1968; Zbl 0176.30506) Full Text: EuDML
Schwarz, Štefan A note on the structure of the semigroup of doubly-stochastic matrices. (English) Zbl 0157.04902 Mat. Čas., Slovensk. Akad. Vied 17, 308-316 (1967). Reviewer: K. D. Magill jun. MSC: 20M99 15B52 PDFBibTeX XMLCite \textit{Š. Schwarz}, Mat. Čas., Slovensk. Akad. Vied 17, 308--316 (1967; Zbl 0157.04902) Full Text: EuDML