Results 61 to 70 of about 5,381,971 (370)

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

p-topological Cauchy completions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
The duality between “regular” and “topological” as convergence space properties extends in a natural way to the more general properties “p-regular” and “p-topological.” Since earlier papers have investigated regular, p-regular, and topological Cauchy ...
J. Wig, D. C. Kent
doaj   +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

Type space on a purely measurable parameter space [PDF]

open access: yes, 2005
Several game theoretical topics require the analysis of hierarchical beliefs, particularly in incomplete information situations. For the problem of incomplete information, Hars´anyi suggested the concept of the type space.
Pintér, Miklós
core   +1 more source

Topological Band Theory for Non-Hermitian Hamiltonians. [PDF]

open access: yesPhysical Review Letters, 2017
We develop the topological band theory for systems described by non-Hermitian Hamiltonians, whose energy spectra are generally complex. After generalizing the notion of gapped band structures to the non-Hermitian case, we classify "gapped" bands in one ...
Huitao Shen, B. Zhen, L. Fu
semanticscholar   +1 more source

On order-bounded subsets of locally solid Riesz spaces

open access: yes, 2015
In a topological Riesz space there are two types of bounded subsets: order bounded subsets and topologically bounded subsets. It is natural to ask (1) whether an order bounded subset is topologically bounded and (2) whether a topologically bounded subset
Hong, Liang
core   +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

Topological non-linear $\sigma$-model, higher gauge theory, and a realization of all 3+1D topological orders for boson systems

open access: yes, 2018
A discrete non-linear $\sigma$-model is obtained by triangulate both the space-time $M^{d+1}$ and the target space $K$. If the path integral is given by the sum of all the complex homomorphisms $\phi: M^{d+1} \to K$, with an partition function that is ...
Lan, Tian   +2 more
core   +1 more source

Discretization of Topological Spaces [PDF]

open access: yesThe Quarterly Journal of Mathematics, 2016
19 ...
Massoud Amini, Nasser Golestani
openaire   +3 more sources

On i-topological spaces: generalization of the concept of a topological space via ideals

open access: yesApplied General Topology, 2006
The aim of this paper is to generalize the structure of a topological space, preserving its certain topological properties. The main idea is to consider the union and intersection of sets modulo “small” sets which are defined via ideals.
Irina Zvina
doaj   +1 more source

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