Seifert conjecture
id:
seifert-conjecture-253-6440546
title:
Seifert conjecture
text:
In mathematics, the Seifert conjecture states that every nonsingular, continuous vector field on the 3-sphere has a closed orbit. It is named after Herbert Seifert. In a 1950 paper, Seifert asked if such a vector field exists, but did not phrase non-existence as a conjecture. He also established the conjecture for perturbations of the Hopf fibration. The conjecture was disproven in 1974 by Paul Schweitzer, who exhibited a C 1 counterexample. Schweitzer's construction was then modified by Jenny H
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Seifert_conjecture
date created:
date modified:
2023-11-08T21:06:38Z
main entity:
{"identifier":"Q376443","url":"https://www.wikidata.org/entity/Q376443"}
image:
fields total:
13
integrity:
13