Whitehead torsion
id:
whitehead-torsion-283-2172570
title:
Whitehead torsion
text:
In geometric topology, a field within mathematics, the obstruction to a homotopy equivalence f : X → Y of finite CW-complexes being a simple homotopy equivalence is its Whitehead torsion τ which is an element in the Whitehead group Wh . These concepts are named after the mathematician J. H. C. Whitehead. The Whitehead torsion is important in applying surgery theory to non-simply connected manifolds of dimension > 4: for simply-connected manifolds, the Whitehead group vanishes, and thus homotop
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wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Whitehead_torsion
date created:
date modified:
2024-04-05T13:08:13Z
main entity:
{"identifier":"Q7996043","url":"https://www.wikidata.org/entity/Q7996043"}
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13
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