Semigroups and lattices.
S. Rankin, J. Johnson (1980)
Semigroup forum
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S. Rankin, J. Johnson (1980)
Semigroup forum
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Nenthein, S., Kemprasit, Y. (2006)
International Journal of Mathematics and Mathematical Sciences
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D.D. Anderson, E.W. Johnson (1984)
Semigroup forum
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D.A. Bredikhin (1996)
Semigroup forum
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F. Masat (1978)
Fundamenta Mathematicae
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A. Anjaneyulu (1981)
Semigroup forum
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G. Ciobanu, M. Deaconescu (1985)
Semigroup forum
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Dariush Heidari, Marzieh Amooshahi (2013)
Discussiones Mathematicae - General Algebra and Applications
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The concept of Γ-semigroups is a generalization of semigroups. In this paper, we associate two transformation semigroups to a Γ-semigroup and we call them the left and right transformation semigroups. We prove some relationships between the ideals of a Γ-semigroup and the ideals of its left and right transformation semigroups. Finally, we study some relationships between Green's equivalence relations of a Γ-semigroup and its left (right) transformation semigroup.
G. Greiner, I. Becker (1986-1987)
Semigroup forum
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Bohdan Zelinka (1995)
Mathematica Bohemica
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A subtraction semigroup is a semigroup with a further operation "" added, called subtraction and satisfying certain axioms. The paper concerns a problem by B. M. Schein concerning the structure of multiplication in a subtraction semigroup.