Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Exotic_R4> ?p ?o. }
Showing items 1 to 30 of
30
with 100 items per page.
- Exotic_R4 abstract "In mathematics, an exotic R4 is a differentiable manifold that is homeomorphic but not diffeomorphic to the Euclidean space R4. The first examples were found by Robion Kirby and Michael Freedman, by using the contrast between Freedman's theorems about topological 4-manifolds, and Simon Donaldson's theorems about smooth 4-manifolds.[citation needed] There is a continuum of non-diffeomorphic differentiable structures of R4, as was shown first by Clifford Taubes.Prior to this construction, non-diffeomorphic smooth structures on spheres — exotic spheres — were already known to exist, although the question of the existence of such structures for the particular case of the 4-sphere remained open. For any positive integer n other than 4, there are no exotic smooth structures on Rn; in other words, if n ≠ 4 then any smooth manifold homeomorphic to Rn is diffeomorphic to Rn.".
- Exotic_R4 wikiPageExternalLink displayAbstract?fromPage=online&aid=2053736&fulltextType=RA&fileId=S0305004100036756.
- Exotic_R4 wikiPageExternalLink 1214440258.
- Exotic_R4 wikiPageID "2180637".
- Exotic_R4 wikiPageRevisionID "603842912".
- Exotic_R4 first "Laurence R.".
- Exotic_R4 first "Michael Hartley".
- Exotic_R4 hasPhotoCollection Exotic_R4.
- Exotic_R4 issn "22".
- Exotic_R4 issue "1".
- Exotic_R4 journal "Journal of Differential Geometry".
- Exotic_R4 last "Freedman".
- Exotic_R4 last "Taylor".
- Exotic_R4 mr "857376".
- Exotic_R4 pages "69".
- Exotic_R4 title "A universal smoothing of four-space".
- Exotic_R4 url 1214440258.
- Exotic_R4 volume "24".
- Exotic_R4 year "1986".
- Exotic_R4 subject Category:4-manifolds.
- Exotic_R4 subject Category:Differential_structures.
- Exotic_R4 comment "In mathematics, an exotic R4 is a differentiable manifold that is homeomorphic but not diffeomorphic to the Euclidean space R4.".
- Exotic_R4 label "Exotic R4".
- Exotic_R4 label "Exotische R4".
- Exotic_R4 sameAs Exotische_R4.
- Exotic_R4 sameAs m.06sxj6.
- Exotic_R4 sameAs Q2436606.
- Exotic_R4 sameAs Q2436606.
- Exotic_R4 wasDerivedFrom Exotic_R4?oldid=603842912.
- Exotic_R4 isPrimaryTopicOf Exotic_R4.