Results 11 to 20 of about 181 (133)

Literature Nots on Bornological Set and Bornological Group

open access: yesAcademic Science Journal
            In this work, we explain the basic concepts of bornological structures bornological sets and bornological groups, that solve the problems of boundedness for sets and groups.  with some examples and fundamental construction for this structure
Anwar Nooruldeen Imran AI-SAIHI   +3 more
doaj   +4 more sources

On \(\beta\)-differentiability of norms

open access: yesJournal of Numerical Analysis and Approximation Theory, 2004
In this note we give some characterizations for the differentiability with respect to a bornology of a continuous convex function. The special case of seminorms is treated.
Valeriu Anisiu
doaj   +3 more sources

Extensions defined using bornologies

open access: yesApplied General Topology, 2013
Many extensions of a space X such that the remainder Y is closed can be constructed as B-extensions, that is, by defining a topology on the disjoint union X [ Y , provided there exists a map, satisfying some conditions, from a basis of Y into the family ...
Alessandro Caterino, M. Cristina Vipera
doaj   +3 more sources

Well-posedness, bornologies, and the structure of metric spaces [PDF]

open access: yesApplied General Topology, 2009
Given a continuous nonnegative functional λ that makes sense defined on an arbitrary metric space (X, d), one may consider those spaces in which each sequence (xn) for which lim n→∞λ(xn) = 0 clusters. The compact metric spaces, the complete metric spaces,
Gerald Beer, Manuel Segura
doaj   +2 more sources

Selectors of discrete coarse spaces [PDF]

open access: yes, 2022
summary:Given a coarse space $(X, \mathcal{E})$ with the bornology $\mathcal B$ of bounded subsets, we extend the coarse structure $\mathcal E$ from $X\times X$ to the natural coarse structure on $(\mathcal B \backslash \lbrace \emptyset\rbrace) \times (\
Protasov, Igor
core   +1 more source

BORNOLOGICAL COUNTABLE ENLARGEMENTS [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2003
AbstractWe show that for a non-flat bornological space there is always a bornological countable enlargement; moreover, when the space is non-flat and ultrabornological the countable enlargement may be chosen to be both bornological and barrelled. It is also shown that countable enlargements for barrelled or bornological spaces are always Mackey ...
Tweddle, Ian, Saxon, S. A.
openaire   +4 more sources

On bornological semigroups [PDF]

open access: yes2015 International Conference on Research and Education in Mathematics (ICREM7), 2015
In this paper we introduce and study the concept of a bornological semigroup. This generalizes the theory of algebraic semigroup from the algebraic setting to the framework of bornological set. Working with bornological set allows to extend the scope of the latter theory considerably.
A.N. Imran, I. S. Rakhimov
openaire   +1 more source

Soft Bornological Group Acts on Soft Bornological Set

open access: yesIraqi Journal of Science, 2023
        In this paper, we introduce the notation of the soft bornological group to solve the problem of boundedness for the soft group. We combine soft set theory with bornology space to produce a new structure which is called    soft bornological group. So that both the product and inverse maps are soft bounded. As well as, we study the actions of the
Ashwaq F. Abdal   +3 more
openaire   +1 more source

A useful algebra for functional calculus [PDF]

open access: yes, 2018
summary:We show that some unital complex commutative LF-algebra of ${\mathcal {C}}^{(\infty )}$ $\mathbb {N}$-tempered functions on $\mathbb {R}^+$ (M.
Hemdaoui, Mohammed, Mohammed Hemdaoui
core   +1 more source

Extremal balleans

open access: yesApplied General Topology, 2019
A ballean (or coarse space) is a set endowed with a coarse structure. A ballean X is called normal if any two asymptotically disjoint subsets of X are asymptotically separated.
Igor Protasov
doaj   +1 more source

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