Results 31 to 40 of about 80,484 (161)

On almost topological groups [PDF]

open access: yesMathematica Moravica, 2019
We introduce and study the almost topological groups which are fundamentally a generalization of topological groups. Almost topological groups are defined by using almost continuous mappings in the sense of Singal and Singal.
Ram Madhu
doaj  

Rough action on topological rough groups

open access: yesApplied General Topology, 2020
In this paper we explore the interrelations between rough set theory and group theory. To this end, we first define a topological rough group homomorphism and its kernel.
Alaa Altassan   +3 more
doaj   +1 more source

Topological lattice-ordered groups [PDF]

open access: yesPacific Journal of Mathematics, 1979
Several types of hulls and completions of lattice ordered groups have been obtained by algebraic methods. In this paper is laid some groundwork for the application of topological and uniform-space concepts to the same end by setting forth those links—topological, algebraic and semantic— between a topological lattice ordered group H and a topologically ...
openaire   +2 more sources

The meet of locally connected group topologies

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
The collection of all group topologies on a given group is a complete lattice partially ordered by inclusion. The purpose of this paper is to develop a convenient method of defining the meet of an arbitrary collection of group topologies and demonstrate ...
Dorene J. Fox
doaj   +1 more source

Statistical and lacunary statistical convergence of interval numbers in topological groups

open access: yesActa Scientiarum: Technology, 2014
In this paper we introduce the concepts of statistical and lacunary statistical convergence of interval numbers in topological groups. We prove some inclusion relations and study some of their properties.
Ayhan Esi
doaj   +1 more source

On strongly reflexive topological groups

open access: yesApplied General Topology, 2001
An Abelian topological group G is strongly reflexive if every closed subgroup and every Hausdorff quotient of G and of its dual group G⋀, is reflexive. In this paper we prove the following: the annihilator of a closed subgroup of an almost metrizable ...
M. J. Chasco, E. Martin-Peinador
doaj   +1 more source

Topological groups: local versus global

open access: yesApplied General Topology, 2006
It is well known that locally compact groups are paracompact. We observe that this theorem can be generalized as follows: every locally paracompact group is paracompact. We prove a more general version of this statement using quotients.
A.V. Arhangelskii, Vladimir V. Uspenskij
doaj   +1 more source

On orderability of topological groups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
A necessary and sufficient condition for a topological group whose topology can be induced by a total order compatible with the group structure is given and such groups are called ordered or orderable topological groups.
G. Rangan
doaj   +1 more source

Characterized Subgroups of Topological Abelian Groups

open access: yesAxioms, 2015
A subgroup H of a topological abelian group X is said to be characterized by a sequence v = (vn) of characters of X if H = {x ∈ X : vn(x) → 0 in T}. We study the basic properties of characterized subgroups in the general setting, extending results known ...
Dikran Dikranjan   +2 more
doaj   +1 more source

NEW METHODS FOR CONSTRUCTING GENERALIZED GROUPS, TOPOLOGICAL GENERALIZED GROUPS, AND TOP SPACES [PDF]

open access: yesJournal of Algebraic Systems, 2019
‎‎The purpose of this paper is to introduce new methods for constructing generalized groups, generalized topological groups and top spaces. We study some properties of these structures and present some relative concrete examples.
Z. Nazari, A. Delbaznasab, M. Kamandar
doaj   +1 more source

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