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- Seifert_conjecture abstract "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 counterexample. Schweitzer's construction was then modified by Jenny Harrison in 1988 to make a counterexample for some . The existence of smoother counterexamples remained an open question until 1993 when Krystyna Kuperberg constructed a very different counterexample. Later this construction was shown to have real analytic and piecewise linear versions.".
- Seifert_conjecture wikiPageExternalLink 0110047.
- Seifert_conjecture wikiPageExternalLink 9802040.
- Seifert_conjecture wikiPageExternalLink fea-kuperberg.pdf.
- Seifert_conjecture wikiPageID "1275978".
- Seifert_conjecture wikiPageRevisionID "567741064".
- Seifert_conjecture hasPhotoCollection Seifert_conjecture.
- Seifert_conjecture subject Category:Conjectures.
- Seifert_conjecture subject Category:Differential_topology.
- Seifert_conjecture subject Category:Disproved_conjectures.
- Seifert_conjecture type Abstraction100002137.
- Seifert_conjecture type Cognition100023271.
- Seifert_conjecture type Concept105835747.
- Seifert_conjecture type Conjectures.
- Seifert_conjecture type Content105809192.
- Seifert_conjecture type Hypothesis105888929.
- Seifert_conjecture type Idea105833840.
- Seifert_conjecture type PsychologicalFeature100023100.
- Seifert_conjecture type Speculation105891783.
- Seifert_conjecture comment "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 counterexample.".
- Seifert_conjecture label "Conjecture de Seifert".
- Seifert_conjecture label "Seifert conjecture".
- Seifert_conjecture label "Гипотеза Зейферта".
- Seifert_conjecture sameAs Conjecture_de_Seifert.
- Seifert_conjecture sameAs m.04pcp9.
- Seifert_conjecture sameAs Q376443.
- Seifert_conjecture sameAs Q376443.
- Seifert_conjecture sameAs Seifert_conjecture.
- Seifert_conjecture wasDerivedFrom Seifert_conjecture?oldid=567741064.
- Seifert_conjecture isPrimaryTopicOf Seifert_conjecture.