Results 181 to 190 of about 412,232 (210)

Right-topological semigroup operations on inclusion hyperspaces

Matematychni Studii, 2008
We show that for any discrete semigroup $X$ the semigroup operation can be extended to a right-topological semigroup operation on the space $G(X)$ of inclusion hyperspaces on $X$. We detect some important subsemigroups of $G(X)$, study the minimal ideal,
Volodymyr Gavrylkiv
semanticscholar   +1 more source

On the measure-theoretic entropy and topological pressure of free semigroup actions

Ergodic Theory and Dynamical Systems, 2016
In this paper we introduce the notions of topological pressure and measure-theoretic entropy for a free semigroup action. Suppose that a free semigroup acts on a compact metric space by continuous self-maps.
Xiaogang Lin, Dongkui Ma, Yupan Wang
semanticscholar   +1 more source

Topological properties of semigroup primes of a commutative ring

, 2017
A semigroup prime of a commutative ring R is a prime ideal of the semigroup $$(R,\cdot )$$(R,·). One of the purposes of this paper is to study, from a topological point of view, the space $${\varvec{\mathcal {S}}}(R)$$S(R) of prime semigroups of R.
C. Finocchiaro, M. Fontana, D. Spirito
semanticscholar   +1 more source

Ideal Extensions of Topological Semigroups

Canadian Journal of Mathematics, 1970
In the study of compact semigroups the constructive method rather than the representational method is usually the better plan of attack. As it was pointed out by Hofmann and Mostert in the introduction to their book [10] this method is more productive than searching for a
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Variational principle for neutralized Bowen topological entropy on subsets of free semigroup actions

Proceedings - Mathematical Sciences, 2023
J. Sarkooh
semanticscholar   +1 more source

On topological Brandt semigroups

Journal of Mathematical Sciences, 2012
We describe the structure of pseudocompact completely 0 -simple topological inverse semigroups. We also give sufficient conditions under which the topological Brandt λ0 -extensions of an (absolutely) H-closed semigroup are (absolutely) H -closed semigroups.
O. V. Gutik, K. P. Pavlyk, A. R. Reiter
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Variational principles for topological invariance entropy of semigroup actions

Semigroup Forum, 2023
Zhumin Ding
semanticscholar   +1 more source

Variational Principle of Topological Pressure of Free Semigroup Actions for Subsets

Qualitative Theory of Dynamical Systems, 2022
Qianying Xiao, Dongkui Ma
semanticscholar   +1 more source

Variational Principle for Topological Pressure on Subsets of Free Semigroup Actions

Acta Mathematica Sinica. English series, 2021
Xingxin Zhong, Z. J. Chen
semanticscholar   +1 more source

Topological Pressure of Free Semigroup Actions for Non-Compact Sets and Bowen’s Equation, I

Journal of Dynamics and Differential Equations, 2021
Qianying Xiao, Dongkui Ma
semanticscholar   +1 more source