Results 31 to 40 of about 4,995,577 (323)

Topological Space-Time Crystal

Physical Review Letters, 2022
We introduce a new class of out-of-equilibrium noninteracting topological phases, the topological space-time crystals. These are time-dependent quantum systems which do not have discrete spatial translation symmetries, but instead are invariant under discrete space-time translations.
openaire   +4 more sources

Modal Logic Axioms Valid in Quotient Spaces of Finite CW-Complexes and Other Families of Topological Spaces

International Journal of Mathematics and Mathematical Sciences, 2016
In this paper we consider the topological interpretations of L□, the classical logic extended by a “box” operator □ interpreted as interior. We present extensions of S4 that are sound over some families of topological spaces, including particular point ...
Maria Nogin, Bing Xu
doaj   +1 more source

Pythagorean fuzzy topological spaces

Complex & Intelligent Systems, 2019
In the present paper, we introduce the notion of Pythagorean fuzzy topological space by motivating from the notion of fuzzy topological space. We define Pythagorean fuzzy continuity of a function defined between Pythagorean fuzzy topological spaces and ...
M. Olgun, M. Ünver, Ş. Yardımcı
semanticscholar   +1 more source

Neutrosophic Nano Semi-Frontier [PDF]

Neutrosophic Sets and Systems, 2020
Smarandache presented and built up the new idea of Neutrosophic set from the Intuition istic fuzzy sets. A.A. Salama presented Neutrosophic topological spaces by utilizing the Neutro sophic sets.
R. Vijayalakshmi, Mookambika A.P.
doaj   +1 more source

Nearly Soft Menger Spaces

Journal of Mathematics, 2020
In this paper, we define a weak type of soft Menger spaces, namely, nearly soft Menger spaces. We give their complete description using soft s-regular open covers and prove that they coincide with soft Menger spaces in the class of soft regular⋆ spaces ...
Tareq M. Al-shami, Ljubiša D. R. Kočinac   +1 more
doaj   +1 more source

Intuitionistic regular subspaces in intuitionistic topological spaces

Desimal, 2023
This paper explores the concept of intuitionistic topological spaces, delving into their definitions and essential properties. It also examines intuitionistic topological subspaces, providing insights into their characteristics.
Md. dalim Haque, Nasima Akhter, Md. Masum Murshed   +2 more
doaj   +1 more source

Generalized soft multi connectedness and compactness

Ratio Mathematica
The significance of connectedness and compactness plays a vital role in studying the properties of topological spaces. Numerous authors explored several characterizations of topological spaces using these notions.
A. Gnanasoundari, V. Inthumathi, M. Maheswari   +2 more
doaj   +1 more source

A New Approach to Operations on Neutrosophic Soft Sets and to Neutrosophic Soft Topological Spaces

Communications in Mathematics and Applications, 2019
In this study, we re-define some operations on neutrosophic soft sets differently from the studies [3, 9]. On this operations are given interesting examples and them basic properties.
Taha Yasin Ozturk, C. Aras, S. Bayramov
semanticscholar   +1 more source

N-Closure and N-Interior in Neutrosophic Topological Spaces

Neutrosophic Sets and Systems
Topology greatly benefits from the concept of δ-cloure. Its quiet nature to extended its proper-ties in other topological spaces. So, with the concept of quasi-coincidence Ganguly and Saha pioneered and extensively examined the notion of δ-closure ...
K. Damodharan, M. Vigneshwaran
doaj   +1 more source

On cofree S-spaces and cofree S-flows

Applied General Topology, 2012
Let S-Tych be the category of Tychonoff S-spaces for a topological monoid S. We study the cofree S-spaces and cofree S-flows over topological spaces and we prove that for any topological space X and a topological monoid S, the function space C(S,X) with ...
Behnam Khosravi
doaj   +1 more source