Results 171 to 180 of about 933 (203)

Nielsen Equivalence and Simple-Homotopy Type

Proceedings of the London Mathematical Society, 1991
Die Nielsenäquivalenz von Erzeugendensystemen einer Gruppe läßt sich als Spezialfall der einfachen Homotopieäquivalenz von Kettenkomplexen betrachten. In der vorliegenden Arbeit: (1) werden daraus neue Unterscheidungen von Nielsenäquivalenzklassen für metabelsche und Fuchssche Gruppen hergeleitet [sie führen die Ergebnisse des Autors und \textit{Y ...
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THE STABLE GROUP OF HOMOTOPY EQUIVALENCES

The Quarterly Journal of Mathematics, 1972
The paper is concerned with the properties, in particular the finiteness and solvability properties, of the stable group \(\xi(X)\) of homotopy classes of self homotopy equivalences of a connected, finite CW complex \(X\) (i.e. \(\xi(X)\) is isomorphic to the group of homotopy classes of self equivalences of the \(r\)-th reduced suspension of \(X\) for
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Explicit homotopy equivalences in dimension two

Mathematical Proceedings of the Cambridge Philosophical Society, 2002
Let G be a finite group; by an algebraic 2-complex over G we mean an exact sequence of Z[G]-modules of the form:E = (0 → J → E2 → E1 → E0 → Z → 0)where Er is finitely generated free over Z[G] for 0 [les ] r [les ] 2. The module J is determined up to stability by the fact of appearing in such an exact sequence; we denote its stable class by Ω3(
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GROUPS OF HOMOTOPY EQUIVALENCES

1962
Abstract : Information on groups of homotopy equivalences is presented. The method is inductive, and it is connected with the Postnikov procedure of decomposing a space according to homotopy groups. Two different groups of homotopy equivalences are considered, the first being the ordinary one and the second being a quotient of it by those equivalences ...
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Approximating Homotopy Equivalences by Homeomorphisms

American Journal of Mathematics, 1979
Chapman, T. A., Ferry, Steve
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ON SOLVING HOMOTOPY EQUIVALENCES

The Quarterly Journal of Mathematics, 1972
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Homotopy Equivalence

2020
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Homotopy Transfer and Effective Field Theory I: Tree‐level

Fortschritte Der Physik, 2022
Alex S Arvanitakis, Olaf Hohm
exaly  

Homotopy perturbation technique

Computer Methods in Applied Mechanics and Engineering, 1999
Ji-Huan He
exaly  

A coupling method of a homotopy technique and a perturbation technique for non-linear problems

International Journal of Non-Linear Mechanics, 2000
Ji-Huan He
exaly