Results 21 to 30 of about 933 (203)

Geometrical modeling and numerical analysis of edge dislocation

open access: yesNihon Kikai Gakkai ronbunshu, 2021
In this study, we conduct modeling and numerical analysis of a straight edge dislocation in a three-dimensional geometrically nonlinear elastic medium.
Shunsuke KOBAYASHI, Ryuichi TARUMI
doaj   +1 more source

SIMPLY CONNECTED, SPINELESS 4-MANIFOLDS

open access: yesForum of Mathematics, Sigma, 2019
We construct infinitely many compact, smooth 4-manifolds which are homotopy equivalent to $S^{2}$ but do not admit a spine (that is, a piecewise linear embedding of $S^{2}$ that realizes the homotopy equivalence).
ADAM SIMON LEVINE, TYE LIDMAN
doaj   +1 more source

Homotopy equivalence of fiber bundles [PDF]

open access: yesProceedings of the American Mathematical Society, 1958
2. The classification theorem. We use the notation and results of [3]. We require that the base space B be a polyhedron because this allows us to use a result of A. Dold [2 ] to simplify both the statement and proof of the theorem. We will assume that the fiber F is locally compact and let M be the space of maps F-*F which have homotopy inverses ...
Curtis, M. L., Lashof, R.
openaire   +2 more sources

Topological Path Planning in GPS Trajectory Data

open access: yesSensors, 2016
This paper proposes a novel solution to the problem of computing a set of topologically inequivalent paths between two points in a space given a set of samples drawn from that space. Specifically, these paths are homotopy inequivalent where homotopy is a
Padraig Corcoran
doaj   +1 more source

Homotopy-epimorphisms, homotopy-monomorphisms and homotopy-equivalences

open access: yesTopology and its Applications, 1992
In a general category, a morphism which is both an epimorphism and a monomorphism need not be an equivalence. However, the authors prove that it is in the case of the homotopy category of pointed path-connected CW- spaces. In fact, they obtain this result as a corollary of a variant of a classical theorem of J. H. C. Whitehead that they prove.
Dyer, Eldon, Roitberg, Joseph
openaire   +1 more source

Self-homotopy equivalences of Postnikov conjugates [PDF]

open access: yesProceedings of the American Mathematical Society, 1979
The purpose of this note is to generalize a result of Wilkerson [4] and show that the self homotopy equivalences of the Postnikov approximations of a space X determine, in a rather simple manner, simultaneously the self homotopy equivalences of X and the self homotopy equivalences of the Postnikov conjugates of X (i.e.
Dror, Emmanuel, Dwyer, W. G., Kan, D. M.
openaire   +2 more sources

A Smale Type Result and Applications to Contact Homology

open access: yesBruno Pini Mathematical Analysis Seminar, 2014
In this note we will show that the injection of a suitable subspace of the space of Legendrian loops into the full loop space is an S1-equivariant homotopy equivalence.
Vittorio Martino
doaj   +1 more source

Homotopy Equivalence in Finite Digital Images [PDF]

open access: yesJournal of Mathematical Imaging and Vision, 2015
major fixes and removal of errors, terminology ...
Haarmann, Jason   +3 more
openaire   +3 more sources

Homotopy perturbation method with an auxiliary parameter for nonlinear oscillators

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2019
A brief introduction to the development of the homotopy perturbation method is given, and the main milestones are elucidated with more than 90 references.
Dan-Ni Yu, Ji-Huan He, Andres G Garcıa
doaj   +1 more source

Fuzzy Relative Homotopy and Fuzzy Weak Equivalence with Some Results

open access: yesWasit Journal for Pure Sciences
In this paper, first introduce my concept fuzzy homotopic and fuzzy homotopic relative and weproved that the relation fuzzy homotopic relative is a fuzzy equivalence relation.
Azhar Kareem
doaj   +1 more source

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