Results 41 to 50 of about 5,719,386 (368)

Soft ideal topological space and mixed fuzzy soft ideal topological space

open access: yesBoletim da Sociedade Paranaense de Matemática, 2019
In this paper we introduce fuzzy soft ideal and mixed fuzzy soft ideal topological spaces and some properties of this space. Also we introduce fuzzy soft $I$-open set, fuzzy soft $\alpha$-$I$-open set, fuzzy soft pre-$I$-open set, fuzzy soft semi-$I ...
Manash Borah, Bipan Hazarika
doaj   +1 more source

The non-existence of a universal topological type space [PDF]

open access: yes, 2010
The concept of types was introduced by Harsányi[8]. In the literature there are two approaches for formalizing types, type spaces: the purely measurable and the topological models.
Aumann   +15 more
core   +1 more source

Magnetic topological quantum chemistry [PDF]

open access: yesNature Communications, 2020
For over 100 years, the group-theoretic characterization of crystalline solids has provided the foundational language for diverse problems in physics and chemistry.
Benjamin J. Wieder   +6 more
semanticscholar   +1 more source

Closed subsets of compact-like topological spaces

open access: yesApplied General Topology, 2020
We investigate closed subsets (subsemigroups, resp.) of compact-like topological spaces (semigroups, resp.). We show that each Hausdorff topological space is a closed subspace of some Hausdorff ω-bounded pracompact topological space and describe open ...
Serhii Bardyla, Alex Ravsky
doaj   +1 more source

On Cubic Interval Vague Sets and Cubic Interval Vague Topological Spaces

open access: yesScience Journal of University of Zakho, 2022
 advance a modern extension formation of cubic vague sets identified as cubic interval vague sets (CIVSs).  similarly describe the idea of  cubic interval vague sets (ICIVSs)    cubic interval vague sets (ECIVSs) by examples  debate their exciting ...
Arsalan Shareef Haji   +1 more
doaj   +1 more source

The topology of spaces of polygons [PDF]

open access: yesTransactions of the American Mathematical Society, 2012
Let E d ( ℓ ) E_{d}(\ell ) denote the space of all closed n n -gons in R d \mathbb {R}^{d} (where d ≥ 2 d\ge 2 ) with sides of length
Viktor Fromm, Michael Farber
openaire   +3 more sources

ON METACOMPACTNESS IN TOPOLOGICAL SPACES

open access: yesINTERNATIONAL JOURNAL OF MATHEMATICS AND COMPUTER RESEARCH, 2023
In this work, we intend to study metacompact spaces and locally metacompact spaces,and study their properties and their relations with order topological spaces.Several examples are discussed and many wellknown theorems are generalized concerning metacompact [7, 2, 8, 3, 4, 56].
Mohammad M.Rousan, Jamal Oudetallah
openaire   +1 more source

Comprehensive search for topological materials using symmetry indicators [PDF]

open access: yesNature, 2018
Over the past decade, topological materials—in which the topology of electron bands in the bulk material leads to robust, unconventional surface states and electromagnetism—have attracted much attention.
F. Tang, H. Po, A. Vishwanath, X. Wan
semanticscholar   +1 more source

Relative Smooth Topological Spaces

open access: yesAdvances in Fuzzy Systems, 2009
In 1992, Ramadan introduced the concept of a smooth topological space and relativeness between smooth topological space and fuzzy topological space in Chang's (1968) view points. In this paper we give a new definition of smooth topological space.
B. Ghazanfari
doaj   +1 more source

Topological Rough Groups

open access: yesTopological Algebra and its Applications, 2016
The concept of topological group is a simple combination of the concepts of abstract group and topological space. The purpose of this paper is to combine the concepts of topological space and rough groups; called topological rough groups on an ...
Bağırmaz Nurettin   +2 more
doaj   +1 more source

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