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In this paper, the translational hull of a type B semigroup is considered. We prove that the translational hull of a type B semigroup is itself a type B semigroup, and give some properties and characterizations of the translational hulls of such semigroups. Moreover, we consider the translational hulls of some special type B semigroups. These results strengthen the results of Fountain and Lawson (Semigroup...
The aim of this paper is to study a class of strong Dubreil-Jacotin semigroups, so-called split integral Dubreil-Jacotin semigroups. We establish the structure of split integral Dubreil-Jacotin semigroups in terms of the cartesian ordered semidirect product of an ordered monoid and an ordered group. Also, the lexicographic ordered semidirect product is considered. These results extend main results...
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