Results 1 to 10 of about 5,377,924 (61)

On the $C_k$-stable closure of the class of (separable) metrizable spaces

open access: yes, 2015
Denote by $\mathbf C_k[\mathfrak M]$ the $C_k$-stable closure of the class $\mathfrak M$ of all metrizable spaces, i.e., $\mathbf C_k[\mathfrak M]$ is the smallest class of topological spaces that contains $\mathfrak M$ and is closed under taking ...
Banakh, Taras, Gabriyelyan, Saak
core   +1 more source

Random-walk topological transition revealed via electron counting

open access: yes, 2017
The appearance of topological effects in systems exhibiting a non-trivial topological band structure strongly relies on the coherent wave nature of the equations of motion.
Benito, M.   +4 more
core   +1 more source

Strictly convex norms and topology

open access: yes, 2010
We introduce a new topological property called (*) and the corresponding class of topological spaces, which includes spaces with $G_\delta$-diagonals and Gruenhage spaces.
Orihuela, José   +2 more
core   +1 more source

p-topological and p-regular: dual notions in convergence theory

open access: yes, 1999
The natural duality between "topological" and "regular," both considered as convergence space properties, extends naturally to p-regular convergence spaces, resulting in the new concept of a p-topological convergence space.
Kent, D. C., Wilde, Scott A.
core   +2 more sources

A new look at Counterexamples in topology [PDF]

open access: yes, 2002
The book Counterexamples in Topology is a useful catalogue of topological spaces and properties. This thesis extends that catalogue to the properties of sobriety and packedness, and describes some related theory. A purely topological account of sobriety
Kirby, J
core  

Movable categories

open access: yes, 2001
The notion of movability for metrizable compacts was introduced by K.Borsuk $[1]$. In this paper we define the notion of movable category and prove that the movability of a topological space $X$ coincides with the movability of a suitable category, which
Gevorgyan, P. S.
core  

Topological Space-Time Crystal. [PDF]

open access: yesPhysical 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 that do not have discrete spatial translation symmetries but instead are invariant under ...
Yang Peng
semanticscholar   +1 more source

Topological natures of the Gauss-Bonnet black hole in AdS space [PDF]

open access: yesPhysical Review D, 2022
In the recent proposal [Phys. Rev. Lett. 129, 191101 (2022)], the black holes were viewed as topological thermodynamic defects by using the generalized off-shell free energy.
Cong-xin Liu, Jin Wang
semanticscholar   +1 more source

Topological transformation and free-space transport of photonic hopfions [PDF]

open access: yesAdvanced Photonics, 2022
Structured light fields embody strong spatial variations of polarisation, phase and amplitude. Understanding, characterization and exploitation of such fields can be achieved through their topological properties.
Yijie Shen   +5 more
semanticscholar   +1 more source

Black Hole Solutions as Topological Thermodynamic Defects. [PDF]

open access: yesPhysical Review Letters, 2022
In this Letter, employing the generalized off-shell free energy, we treat black hole solutions as defects in the thermodynamic parameter space. The results show that the positive and negative winding numbers corresponding to the defects indicate the ...
Shao-Wen Wei, Yu-Xiao Liu, R. Mann
semanticscholar   +1 more source

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