Simple-homotopy equivalence
id:
simple-homotopy-equivalence-300-14457346
title:
Simple-homotopy equivalence
text:
In mathematics, particularly the area of topology, a simple-homotopy equivalence is a refinement of the concept of homotopy equivalence. Two CW-complexes are simple-homotopy equivalent if they are related by a sequence of collapses and expansions, and a homotopy equivalence is a simple homotopy equivalence if it is homotopic to such a map. The obstruction to a homotopy equivalence being a simple homotopy equivalence is the Whitehead torsion, τ . A homotopy theory that studies simple-homotopy typ
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Simple-homotopy_equivalence
date created:
date modified:
2022-07-29T09:04:36Z
main entity:
{"identifier":"Q7520625","url":"https://www.wikidata.org/entity/Q7520625"}
image:
fields total:
13
integrity:
13