Results 11 to 20 of about 203 (112)

Nonlinear ergodic theorems for a semitopological semigroup of non-Lipschitzian mappings without convexity [PDF]

open access: yesAbstract and Applied Analysis, 1999
Let G be a semitopological semigroup, C a nonempty subset of a real Hilbert space H, and ℑ={Tt:t∈G} a representation of G as asymptotically nonexpansive type mappings of C into itself.
G. Li, J. K. Kim
doaj   +3 more sources

Quasiminimal distal function space and its semigroup compactification [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
Quasiminimal distal function on a semitopological semigroup is introduced. The concept of right topological semigroup compactification is employed to study the algebra of quasiminimal distal functions.
R. D. Pandian
doaj   +3 more sources

The universal semilattice compactification of a semigroup [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
The universal abelian, band, and semilattice compactifications of a semitopological semigroup are characterized in terms of three function algebras.
H. R. Ebrahimi Vishki   +1 more
doaj   +3 more sources

Recapturing semigroup compactifications of a group from those of its closed normal subgroups [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
We know that if S is a subsemigroup of a semitopological semigroup T, and 𝔉 stands for one of the spaces 𝒜𝒫,𝒲𝒜𝒫,𝒮𝒜𝒫,𝒟 or ℒ𝒞, and (ϵ,T𝔉) denotes the canonical 𝔉-compactification of T, where T has the property that 𝔉(S)=𝔉(T)|s, then (ϵ|s,ϵ(S)¯) is an 𝔉 ...
M. R. Miri, M. A. Pourabdollah
doaj   +3 more sources

Semigroup compactifications by generalized distal functions and a fixed point theorem [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
The notion of “Semigroup compactification” which is in a sense, a generalization of the classical Bohr (almost periodic) compactification of the usual additive reals R, has been studied by J. F. Berglund et. al. [2].
R. D. Pandian
doaj   +4 more sources

On a semitopological semigroup $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ when a family $\mathscr{F}$ consists of inductive non-empty subsets of $\omega$ [PDF]

open access: yesМатематичні Студії, 2023
Let $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ be the bicyclic semigroup extension for the family $\mathscr{F}$ of ${\omega}$-closed subsets of $\omega$ which is introduced in \cite{Gutik-Mykhalenych=2020}.
O. V. Gutik, M. S. Mykhalenych
doaj   +3 more sources

Central Sets Theorem Near of an Idempotent in Wap-Compactification [PDF]

open access: yesJournal of Function Spaces, 2023
A small part of real line which is very close to zero has rich combinatorial properties. The aim of this paper is to express and then prove some locally combinatorial concepts near a virtual idempotent by considering the wap-compactification of a ...
Ali Pashapournia   +2 more
doaj   +2 more sources

Fixed point theorems for generalized Lipschitzian semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
Let K be a nonempty subset of a p-uniformly convex Banach space E, G a left reversible semitopological semigroup, and 𝒮={Tt:t∈G} a generalized Lipschitzian semigroup of K into itself, that is, for s∈G, ‖Tsx−Tsy‖≤as‖x−y‖+bs(‖x−Tsx‖+‖y−Tsy‖)+cs(‖x−Tsy‖+‖y ...
Jong Soo Jung, Balwant Singh Thakur
doaj   +2 more sources

Asymptotic behavior of almost-orbits of reversible semigroups of non-Lipschitzian mappings in Banach spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
Let C be a nonempty closed convex subset of a uniformly convex Banach space E with a Fréchet differentiable norm, G a right reversible semitopological semigroup, and 𝒮={S(t):t∈G} a continuous representation of G as mappings of asymptotically nonexpansive
Jong Soo Jung   +2 more
doaj   +2 more sources

Some algebraic universal semigroup compactifications [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 26, Issue 6, Page 353-357, 2001., 2001
Universal compactifications of semitopological semigroups with respect to the properties satisfying the varieties of semigroups and groups are studied through two function algebras.
H. R. Ebrahimi-Vishki
wiley   +2 more sources

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