Results 31 to 40 of about 266,674 (332)

Homological Type of Geometric Transitions [PDF]

open access: yes, 2010
The present paper gives an account and quantifies the change in topology induced by small and type II geometric transitions, by introducing the notion of the \emph{homological type} of a geometric transition.
B. Geemen Van   +26 more
core   +1 more source

Algorithm for Topology Search Using Dilution of Precision Criterion in Ultra-Dense Network Positioning Service Area

open access: yesMathematics, 2023
User equipment (UE) location estimation in emerging 5G/B5G/6G Ultra-Dense Networks (UDNs) is a breakthrough technology in future wireless info-communication ecosystems.
Grigoriy Fokin, Andrey Koucheryavy
doaj   +1 more source

A Euclidean Bianchi Model Based On $S^3/D_8^*$ [PDF]

open access: yes, 1995
We explain how the round four-sphere can be sliced along homogeneous 3~-~manifolds of topology $S^3/D_8^*$. This defines a Euclidean Bianchi type IX model for Einstein's equations with cosmological constant.
Domenico Giulini   +4 more
core   +2 more sources

Level-set based topology optimization considering milling directions via fictitious physical model

open access: yesMechanical Engineering Journal, 2020
Topology optimization is the most flexible structural optimization method that allows the topological modification as well as the shape changes. Topology optimization techniques have recently been utilized in engineering applications regarding multi ...
Doe YOUNG HUR   +4 more
doaj   +1 more source

On Geometric Topological Algebras

open access: yesJournal of Mathematical Analysis and Applications, 1993
The paper under review, one of related works by the author [see also the review above], is influenced by, and subsumed under, a programme of sheaf-theoretic treatment of differential geometry, hence the term ``geometric'' for the algebras in the title.
openaire   +2 more sources

Evolutionary Khovanov homology

open access: yesAIMS Mathematics
Knot theory, a subfield in geometric topology, is the study of the embedding of closed circles into three-dimensional Euclidean space, motivated by the ubiquity of knots in daily life and human civilization.
Li Shen, Jian Liu, Guo-Wei Wei
doaj   +1 more source

Aharonov-Bohm effect and geometric phases -- Exact and approximate topology

open access: yes, 2013
By analyzing an exactly solvable model in the second quantized formulation which allows a unified treatment of adiabatic and non-adiabatic geometric phases, it is shown that the topology of the adiabatic Berry's phase, which is characterized by the ...
Fujikawa, Kazuo
core   +1 more source

A search method for thin positions of links

open access: yes, 2004
We give a method for searching for thin positions of a given link.Comment: Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol5/agt-5-42.abs ...
Burde   +5 more
core   +3 more sources

Topological Properties of Geometric Phases [PDF]

open access: yesProgress of Theoretical Physics Supplement, 2006
The level crossing problem and associated geometric terms are neatly formulated by using the second quantization technique both in the operator and path integral formulations. The analysis of geometric phases is then reduced to the familiar diagonalization of the Hamiltonian.
openaire   +2 more sources

Non-Abelian adiabatic geometric transformations in a cold strontium gas

open access: yesNature Communications, 2018
The symmetry group and geometric phase of a system are responsible for many quantum properties related to non-trivial topology. Here the authors show non-Abelian geometric phase in laser-coupled ultracold strontium atoms by using a tripod scheme.
F. Leroux   +6 more
doaj   +1 more source

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