Results 41 to 50 of about 5,897,592 (221)
Topological Band Theory for Non-Hermitian Hamiltonians. [PDF]
Physical 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
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A Hybrid Approach to Micro Vague Topological Space via Neutrosophic Topological Space [PDF]
Neutrosophic Sets and SystemsPlenty of topologists are exploring and discovering multiple forms of topological spaces. The chief objective of the current enquiry is to establish and evaluate an original hybrid topological space named Neutrosophic Micro Vague Topological Space. When
Vargees Vahini T, Trinita Pricilla
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Closed subsets of compact-like topological spaces
Applied 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
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Neutrosophic -Topological spaces
Neutrosophic Sets and Systems, 2020 In this paper, the concept of neutrosophic topological spaces is introduced. We dene and study the properties of neutrosophic open sets, closed sets, interior and closure. The set of all generalize neutrosophic pre-closed sets GNPC( ) and the set of all neutrosophic -open sets in a neutrosophic topological space (X; ) can be considered as examples
Murad Arar, Saeid Jafari
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Magnetic topological quantum chemistry [PDF]
Nature 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
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The character of free topological groups I
Applied General Topology, 2005 A systematic analysis is made of the character of the free and free abelian topological groups on uniform spaces and on topological spaces. In the case of the free abelian topological group on a uniform space, expressions are given for the character in ...
Peter Nickolas, Mikhail Tkachenko
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Mapping spaces from projective spaces [PDF]
, 2015 We denote the $n$-th projective space of a topological monoid $G$ by $B_nG$ and the classifying space by $BG$. Let $G$ be a well-pointed topological monoid of the homotopy type of a CW complex and $G'$ a well-pointed grouplike topological monoid.
Tsutaya, Mitsunobu
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Topological Insulators in Twisted Transition Metal Dichalcogenide Homobilayers. [PDF]
Physical 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
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Z2-topology in nonsymmorphic crystalline insulators: Mobius twist in surface states [PDF]
, 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
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p-topological Cauchy completions
International 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
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