Results 41 to 50 of about 590 (104)

Semicontinuous groups and separation properties

open access: yes, 1992
International Journal of Mathematics and Mathematical Sciences, Volume 15, Issue 3, Page 621-623, 1992.
Ellen Clay, Bradd Clark, Vic Schneider
wiley   +1 more source

Preduals of semigroup algebras [PDF]

open access: yes, 2008
For a locally compact group $G$, the measure convolution algebra $M(G)$ carries a natural coproduct. In previous work, we showed that the canonical predual $C_0(G)$ of $M(G)$ is the unique predual which makes both the product and the coproduct on $M(G ...
Daws, Matthew   +2 more
core  

Methods for the analysis of the Lindstedt series for KAM tori and renormalizability in classical mechanics

open access: yes, 1995
This paper consists in a unified exposition of methods and techniques of the renormalization group approach to quantum field theory applied to classical mechanics, and in a review of results: (1) a proof of the KAM theorem, by studing the perturbative ...
Gentile, G., Mastropietro, V.
core   +4 more sources

Projectively first-countable semitopological groups

open access: yesTopology and its Applications, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

On paratopological groups [PDF]

open access: yes, 2013
In this paper, we firstly construct a Hausdorff non-submetrizable paratopological group $G$ in which every point is a $G_{\delta}$-set, which gives a negative answer to Arhangel'ski\v{\i}\ and Tkachenko's question [Topological Groups and Related ...
Lin, Fucai, Liu, Chuan
core  

FLOWS AND UNIVERSAL COMPACTIFICATIONS [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1997
The main purpose of this paper is to establish a relation between universality of certain P-compactifications of a semitopological semigroup and their corresponding enveloping semigroups.
doaj  

THE ANALOGUE OF WEIGHTED GROUP ALGEBRA FOR SEMITOPOLOGICAL SEMIGROUPS [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1995
In [1,2,3], A. C. Baker and J.W. Baker studied the subspace Ma(S) of the convolution measure algebra M, (S) of a locally compact semigroup. H. Dzinotyiweyi in [5,7] considers an analogous measure space on a large class of C-distinguished topological ...
doaj  

Compactifications of topological groups [PDF]

open access: yes, 2001
Every topological group $G$ has some natural compactifications which can be a useful tool of studying $G$. We discuss the following constructions: (1) the greatest ambit $S(G)$ is the compactification corresponding to the algebra of all right uniformly ...
Uspenskij, Vladimir
core   +1 more source

Semitopological groups, Bouziad spaces and topological groups

open access: yesTopology and its Applications, 2013
A~set~\(Y\) in a~topological space~\(X\) is said to be \textit{bounded} in~\(X\) if \(\bigcap_{n\in\mathbb{N}}\overline{U_n}\neq\emptyset\) whenever \((U_n)_{n\in\mathbb{N}}\) is a~decreasing sequence of open sets in~\(X\) such that \(U_n\cap Y\neq\emptyset\) for each \(n\in\mathbb{N}\).
openaire   +1 more source

Subgroups of products of para τ-discrete semitopological groups

open access: yesFilomat, 2023
In this article we define a new class of topological spaces called para ?-discrete spaces and give an internal characterization of a subgroup of product of para ?-discrete semitopological groups having character less than or equal to ?. Also we give a partial solution of an open problem posed by S?nchez [5, Problem 3.8].
Vikesh Kumar, Brij Tyagi
openaire   +1 more source

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