Results 11 to 20 of about 1,877,349 (376)

Topology by dissipation [PDF]

open access: yesNew Journal of Physics, 2013
Topological states of fermionic matter can be induced by means of a suitably engineered dissipative dynamics. Dissipation then does not occur as a perturbation, but rather as the main resource for many-body dynamics, providing a targeted cooling into a ...
Baranov, M. A.   +6 more
core   +6 more sources

Channel-wise Topology Refinement Graph Convolution for Skeleton-Based Action Recognition [PDF]

open access: yesIEEE International Conference on Computer Vision, 2021
Graph convolutional networks (GCNs) have been widely used and achieved remarkable results in skeleton-based action recognition. In GCNs, graph topology dominates feature aggregation and therefore is the key to extracting representative features.
Yuxin Chen   +5 more
semanticscholar   +1 more source

Topologically semisimple and topologically perfect topological rings

open access: yesPublicacions Matemàtiques, 2022
LaTeX 2e with tikz-cd, 69 pages; v.3: new Section 13 inserted, final Section 14 (former 13) rewritten with much more complete picture obtained using new results of arXiv:1911.11720, Lemma 7.2 deleted as no longer relevant, Examples 3.7(2) and 9.4 inserted; v.4: Remarks 3.11 and 7.2 inserted; v.5: misprints corrected, references updated, a reference to ...
Leonid Positselski, Jan Šťovíček
openaire   +4 more sources

Acoustic non-Hermitian skin effect from twisted winding topology [PDF]

open access: yesNature Communications, 2021
The recently discovered non-Hermitian skin effect (NHSE) manifests the breakdown of current classification of topological phases in energy-nonconservative systems, and necessitates the introduction of non-Hermitian band topology.
Li Zhang   +13 more
semanticscholar   +1 more source

Algebraic topology

open access: yesGraduate Studies in Mathematics, 2020
This lecture covers several basic methods for standard tasks in data analysis and image processing. A non-exclusive and non-exhaustive list of meth-ods: histograms, dimension reduction, clustering, filters, frequency analysis, morphological methods ...
Claudia Scheimbauer
semanticscholar   +1 more source

Topological Insulators by Topology Optimization [PDF]

open access: yesPhysical Review Letters, 2019
An acoustic topological insulator (TI) is synthesized using topology optimization, a free material inverse design method. The TI appears spontaneously from the optimization process without imposing requirements on the existence of pseudo spin-1/2 states at the TI interface edge, or the Chern number of the topological phases. The resulting TI is passive;
Christiansen, Rasmus E.   +2 more
openaire   +5 more sources

Topologically Semiperfect Topological Rings

open access: yesAlgebras and Representation Theory, 2023
AbstractWe define topologically semiperfect (complete, separated, right linear) topological rings and characterize them by equivalent conditions. We show that the endomorphism ring of a module, endowed with the finite topology, is topologically semiperfect if and only if the module is decomposable as an (infinite) direct sum of modules with local ...
Leonid Positselski, Jan Šťovíček
openaire   +3 more sources

A topological signature in cosmic topology [PDF]

open access: yesClassical and Quantum Gravity, 2001
27 pages, 7 figures, LaTeX2e. Inserted: clarifying details, a connection with CCP method, new references. To appear in Class. Quantum Grav.
A.F.F. Teixeira   +2 more
openaire   +4 more sources

Topological photonics [PDF]

open access: yesReviews of Modern Physics, 2014
Topological photonics is a rapidly emerging field of research in which geometrical and topological ideas are exploited to design and control the behavior of light. Drawing inspiration from the discovery of the quantum Hall effects and topological insulators in condensed matter, recent advances have shown how to engineer analogous effects also for ...
Ozawa, Tomoki   +10 more
openaire   +11 more sources

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