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Some Propositions About Inverse Semigroups, Osman Hysa, Arben Reka
Some Propositions About Inverse Semigroups, Osman Hysa, Arben Reka
UBT International Conference
The inverse semigroups are semigroups studied by many algebraists. In this paper we will formulate and prove some other propositions on these semigroups. So we will prove two propositions concerning the closure of a subsemigroup of a given inverse semigroup S, within the meaning introduced by Schein in 1962, two propositions on the group congruence on a normal subsemigroup of the inverse semigroup S, and a proposition about closed subsemigroup assertion of an inverse semigroup S.