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Uniformly contractive semigroups and submarkovian semigroups (I)

Acta Mathematica Sinica, 1991
Summary: Let \((M,{\mathcal F},dx)\) be a \(\sigma\)-finite measure space with a \(\sigma\)- field \({\mathcal F}\) countably generated. We call a linear map \(T\) uniformly contractive if it maps measurable functions on \(M\) to measurable functions and \[ \| Tf\|_ p\leq \| f\|_ p \qquad\text{for}\qquad 1\leq p\leq +\infty.
Yan, Shaozong, Zhang, Yinnan
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Subgroups of the Power Semigroup of a Finite Semigroup

Canadian Journal of Mathematics, 1979
Throughout this paper, S will denote a finite semigroup and Z+ the set of positive integers. E = E(S) denotes the set of idempotents of S. Let . If , then let AB = {ab| a ∈ A, b ∈ B}. has been studied by many authors, including [2, 3, 5, 6, 7]. If X is a set, then |X| denotes the cardinality of X. For undefined terms in this paper, see [1,4].THEOREM 1.
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C-semigroups and strongly continuous semigroups

Israel Journal of Mathematics, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Semigroups and Semigroup Rings

2023
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On the bi-ideal semigroup of a semigroup

Mathematics Seminar Notes, 1978
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Quasi commutative semigroups and σ-reflexive semigroups