Whitney disk
id:
whitney-disk-176-13937992
title:
Whitney disk
text:
In mathematics, given two submanifolds A and B of a manifold X intersecting in two points p and q, a Whitney disc is a mapping from the two-dimensional disc D, with two marked points, to X, such that the two marked points go to p and q, one boundary arc of D goes to A and the other to B. Their existence and embeddedness is crucial in proving the ''h''-cobordism theorem, where it is used to cancel the intersection points; and its failure in low dimensions corresponds to not being able to embed a
brand slug:
wiki
category slug:
encyclopedia
description:
Topological mapping
original url:
https://en.wikipedia.org/wiki/Whitney_disk
date created:
2005-10-07T07:00:45Z
date modified:
2024-09-04T00:38:12Z
main entity:
{"identifier":"Q7996764","url":"https://www.wikidata.org/entity/Q7996764"}
image:
fields total:
13
integrity:
15