A remark on elementary pseudogroups
Tôru Saitô (1966)
Colloquium Mathematicae
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Tôru Saitô (1966)
Colloquium Mathematicae
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Dariush Heidari, Marzieh Amooshahi (2015)
Discussiones Mathematicae - General Algebra and Applications
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The concept of Γ-semigroups is a generalization of semigroups. In this paper, we consider Γ-groups and prove that every Γ-group is derived from a group then, we give the number of Γ-groups of small order.
J. Gilewski (1972)
Colloquium Mathematicae
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A. C. Shershin (1969)
Colloquium Mathematicae
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P. Grillet (1972)
Semigroup forum
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S. Lipscomb, J. Konieczy (1995)
Semigroup forum
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S. Lajos (1970)
Colloquium Mathematicae
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Dolinka, Igor (1999)
Novi Sad Journal of Mathematics
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B. M. Schein (1974)
Colloquium Mathematicae
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Anzelm Iwanik (1977)
Colloquium Mathematicae
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Alair Pereira do Lago, Imre Simon (2010)
RAIRO - Theoretical Informatics and Applications
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This paper surveys the area of Free Burnside Semigroups. The theory of these semigroups, as is the case for groups, is far from being completely known. For semigroups, the most impressive results were obtained in the last 10 years. In this paper we give priority to the mathematical treatment of the problem and do not stress too much neither motivation nor the historical aspects. No proofs are presented in this paper, but we tried to give as many examples as was possible. ...
Charles J. K. Batty, Ralph Chill, Yuri Tomilov (2016)
Journal of the European Mathematical Society
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Motivated by potential applications to partial differential equations, we develop a theory of fine scales of decay rates for operator semigroups. The theory contains, unifies, and extends several notable results in the literature on decay of operator semigroups and yields a number of new ones. Its core is a new operator-theoretical method of deriving rates of decay combining ingredients from functional calculus and complex, real and harmonic analysis. It also leads to several results...