Results 21 to 30 of about 9,544 (144)
Nonexpansive actions of topological semigroups on strictly convex Banach spaces and fixed points
, 1988 Let C be a closed convex subset of a strictly convex Banach space X and {T8: s E S} be a continuous representation of a semitopological semigroup S as nonexpansive mappings of C into itself. The main result establishes the fact that if for some x E C the
W. Bartoszek
semanticscholar +1 more source
Topological Semigroups of Non-Negative Matrices.
, 2018 This paper is devoted primarily to the study of topological semigroups of non-negative matrices. Usually, these semigroups are also assumed to be compact. Theorems on matrices and semigroups, which are germane to the paper, are first presented. Attention
D. Brown
semanticscholar +1 more source
The structure of fixed-point sets of uniformly lipschitzian semigroups
Collectanea Mathematica, 2012 In this paper, by asymptotic center techniques, we shown that the set of fixed points of a uniformly k-lipschitzian semigroup (one-parameter or left reversible semi-topological) in a uniformly convex Banach space is a retract of the domain if k is close ...
J. Górnicki
semanticscholar +2 more sources
On Maximal Ideals of Compact Connected Topological Semigroups
International Journal of Mathematics and Mathematical Sciences, 2010 Several results concerning ideals of a compact topological semigroup 𝑆 with 𝑆2=𝑆 can be found in the literature. In this paper, we further investigate in a compact connected topological semigroup 𝑆 how the conditions 𝑆2=𝑆 and 𝑆2≠𝑆 affect the structure of
Phoebe McLaughlin +2 more
semanticscholar +1 more source
Boolean topological graphs of semigroups: the lack of first-order axiomatization
Semigroup Forum, 2014 The graph of an algebra A is the relational structure G(A) in which the relations are the graphs of the basic operations of A. For a class 𝒞 of algebras let G(𝒞)={G(A)∣A∈𝒞}.
Michał M. Stronkowski, Belinda Trotta
semanticscholar +2 more sources
Homotopy extension property in homotopy theory for topological semigroups.
, 2012 The purpose of this paper is to extend the concept of homotopy extension property in homotopy theory for topological spaces to its analogical structure in homotopy theory for topological semigroups.
Adem Kılıçman, Amin Saif
semanticscholar +1 more source
Topological semigroups and continua with cut points
, 1955 In this paper we are concerned with continua that possess cut points and that admit the structure of topological semigroups, herein called mobs. First, we discuss the relations between the existence of cut points in compact connected mobs and the ...
W. M. Faucett
semanticscholar +1 more source
Metrizability of Clifford topological semigroups
, 2011 We prove that a topological Clifford semigroup $S$ is metrizable if and only if $S$ is an $M$-space and the set $E=\{e\in S:ee=e\}$ of idempotents of $S$ is a metrizable $G_\delta$-set in $S$.
A. Arhangel’skii +13 more
core +1 more source
Connected ordered topological semigroups with idempotent endpoints. II.
, 1958 This paper is a continuation of an earlier paper(2) of the same title. The semigroups described in the title are called threads. Part I determined the structure of all possible threads with a zero element.
A. Clifford
semanticscholar +1 more source
Attractors for an Energy‐Damped Viscoelastic Plate Equation
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT In this paper, we consider a class of non‐autonomous beam/plate equations with an integro‐differential damping given by a possibly degenerate memory and an energy damping given by a nonlocal ε$$ \varepsilon $$‐perturbed coefficient. For each ε>0$$ \varepsilon >0 $$, we show that the dynamical system generated by the weak solutions of the ...
V. Narciso +3 more
wiley +1 more source