Results 21 to 30 of about 5,377,924 (61)

Generalised Closed Sets in Multiset Topological Space

open access: yesProyecciones (Antofagasta), 2018
In this article, we introduce the notion of generalized closed sets and generalized open sets in multiset topological spaces. We investigate their different properties. We have introduced the notion of some separation axioms and discussed some examples.
Karishma Shravan, B. Tripathy
semanticscholar   +1 more source

Space-time Uncertainty Principle from Breakdown of Topological Symmetry [PDF]

open access: yes, 1997
Starting from topological quantum field theory, we derive space-time uncertainty relation with respect to the time interval and the spatial length proposed by Yoneya through breakdown of topological symmetry in the large N matrix model.
Banks T.   +3 more
core   +3 more sources

Entropy and induced dynamics on state spaces [PDF]

open access: yes, 2004
We consider the topological entropy of state space and quasi-state space homeomorphisms induced from C*-algebra automorphisms. Our main result asserts that, for automorphisms of separable exact C*-algebras, zero Voiculescu-Brown entropy implies zero ...
Kerr, David
core   +1 more source

On soft topological space via semiopen and semiclosed soft sets [PDF]

open access: yes, 2012
This paper introduces semiopen and semiclosed soft sets in soft topological spaces. The notions of interior and closure are generalized using these sets.
J. Mahanta, P. Das
semanticscholar   +1 more source

GTI-space : the space of generalized topological indices [PDF]

open access: yes, 2008
A new extension of the generalized topological indices (GTI) approach is carried out torepresent 'simple' and 'composite' topological indices (TIs) in an unified way.
A.R Matamala   +34 more
core   +1 more source

Z2-topology in nonsymmorphic crystalline insulators: Mobius twist in surface states [PDF]

open access: yes, 2015
It has been known that an anti-unitary symmetry such as time-reversal or charge conjugation is needed to realize Z2 topological phases in non-interacting systems. Topological insulators and superconducting nanowires are representative examples of such Z2
Gomi, Kiyonori   +2 more
core   +2 more sources

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

Profinite algebras and affine boundedness

open access: yes, 2016
We prove a characterization of profinite algebras, i.e., topological algebras that are isomorphic to a projective limit of finite discrete algebras. In general profiniteness concerns both the topological and algebraic characteristics of a topological ...
Schneider, Friedrich Martin   +1 more
core   +1 more source

Topological Insulators in Twisted Transition Metal Dichalcogenide Homobilayers. [PDF]

open access: yesPhysical Review Letters, 2018
We show that moiré bands of twisted homobilayers can be topologically nontrivial, and illustrate the tendency by studying valence band states in ±K valleys of twisted bilayer transition metal dichalcogenides, in particular, bilayer MoTe_{2}.
Fengcheng Wu   +5 more
semanticscholar   +1 more source

Topological Test Spaces

open access: yes, 2004
A test space is the set of outcome-sets associated with a collection of experiments. This notion provides a simple mathematical framework for the study of probabilistic theories -- notably, quantum mechanics -- in which one is faced with incommensurable ...
A. Gleason   +8 more
core   +2 more sources

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