期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：2000
卷号：23
DOI：10.1155/S0161171200003604
出版社：Hindawi Publishing Corporation
摘要：Clifford and Preston (1961) showed several important characterizations of right groups. It was shown in Roy and So
(1998) that, among topological semigroups, compact right simple or left cancellative semigroups are in fact right groups, and the
closure of a right simple subsemigroup of a compact semigroup is always a right subgroup. In this paper, it is shown that such
results can be generalized in convergence semigroups. In the discussion of maximal right simple subsemigroups and maximal right
subgroups of semigroups, generalization of the results that no two maximal right simple subsemigroups and maximal right subgroups of a convergence semigroup intersect, is also established.
