Previous |  Up |  Next

Article

References:
[1] A. H. Clifford, G. B. Preston: The Algebraic Theory of Semigroups, Vol. 1. Math. Surveys No. 7, Amer. Math. Soc, Providence, R. I., 1962.
[2] Š. Schwarz: On the semigroup of binary relations on a finite set. Czech. math. J. 20 (1970), 632-679. MR 0296190 | Zbl 0228.20034
Partner of
EuDML logo