On semigroup presentations and efficiency |
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Authors: | H Ayık F Kuyucu B Vatansever |
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Institution: | 1. Department of Mathematics, The University of ?ukurova, 01330, Adana, Turkey
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Abstract: | The purpose of this paper is twofold. First we determine some forms of the relations in a finite semigroup presentation with zero deficiency which does or does not define a group. Moreover, we conclude that a finite Rees matrix semigroup M G; I, Λ; P] is efficient when G is efficient and the index sets I, Λ are finite. |
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