Results 31 to 40 of about 12,992,220 (343)

Categorically Closed Topological Groups

open access: yesAxioms, 2017
Let C → be a category whose objects are semigroups with topology and morphisms are closed semigroup relations, in particular, continuous homomorphisms.
Taras Banakh
doaj   +1 more source

A new Lindelof topological group [PDF]

open access: yes, 2010
We show that the subsemigroup of the product of w_1-many circles generated by the L-space constructed by J. Moore is again an L-space. This leads to a new example of a Lindelof topological group.
Arhangel'skiĭ   +11 more
core   +2 more sources

An example of a non-Borel locally-connected finite-dimensional topological group

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2017
According to a classical theorem of Gleason and Montgomery, every finite-dimensional locally path-connected topological group is a Lie group. In the paper for every $n\ge 2$ we construct a locally connected subgroup $G\subset{\mathbb R}^{n+1}$ of ...
I.Ya. Banakh, T.O. Banakh, M.I. Vovk
doaj   +1 more source

Pseudocompact and precompact topological subsemigroups of topological groups

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2023
It is known that every pseudocompact topological group is precompact, we extend this result to a class of subsemigroup of topological groups. Then we use this results to prove that cancellative locally compact countably compact topological semigroups ...
Julio Cesar Hernandez
doaj   +1 more source

Group actions on topological graphs [PDF]

open access: yes, 2010
We define the action of a locally compact group $G$ on a topological graph $E$. This action induces a natural action of $G$ on the $C^*$-correspondence ${\mathcal H}(E)$ and on the graph $C^*$-algebra $C^*(E)$.
Deaconu, Valentin   +2 more
core   +3 more sources

On subgroups of minimal topological groups [PDF]

open access: yes, 2007
A topological group is minimal if it does not admit a strictly coarser Hausdorff group topology. The Roelcke uniformity (or lower uniformity) on a topological group is the greatest lower bound of the left and right uniformities.
Alexandrov   +59 more
core   +3 more sources

Partially topological group action

open access: yesApplied General Topology, 2018
The concept of partially topological group was recently introduced in [3]. In this article, we define partially topological group action on partially topological space and we generalize some fundamental results from topological group action theory.
M. A. Al Shumrani
doaj   +1 more source

Derivative for Functions f:GH, Where G Is a Metric Divisible Group

open access: yesMathematics, 2022
In this paper, a derivative for functions f:G→H, where G is any metric divisible group and H is a metric Abelian group with a group metric, is defined. Basic differentiation theorems are stated and demonstrated. In particular, we obtain the Chain Role.
Héctor Andrés Granada Díaz   +2 more
doaj   +1 more source

A classification of 3+1D bosonic topological orders (I): the case when point-like excitations are all bosons [PDF]

open access: yes, 2018
Topological orders are new phases of matter beyond Landau symmetry breaking. They correspond to patterns of long-range entanglement. In recent years, it was shown that in 1+1D bosonic systems there is no nontrivial topological order, while in 2+1D ...
Kong, Liang, Lan, Tian, Wen, Xiao-Gang
core   +2 more sources

k-partial groups

open access: yesJournal of the Egyptian Mathematical Society, 2017
In this paper, we introduce the concept of k̲−partial groups and discuss some of their basic properties. We introduce the category kpg of k̲−partial groups, which is more convenient than the category Sstg of strong semilattices of topological groups [1 ...
A.M. Abd-Allah, A.I. Aggour, A. Fathy
doaj   +1 more source

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