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An Exotic 4-sphereEasyChair Preprint 9575, version historyVersion | Date | Pages | Version notes |
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1 | January 15, 2023 | 9 | | 2 | January 22, 2023 | 9 | Notice that the set of compact smooth manifolds homeomorphic to 4-dimensional ball, considered up to oriented diffeomorphism, is in canonical bijection with the set of compact smooth manifolds homeomorphic to 4-sphere, considered up to oriented diffeomorphism. | 3 | January 25, 2023 | 10 | A PL 4-manifold is exotic if and only if there exists an exotic link. A physical meaning of exotic spheres is added. | 4 | August 28, 2023 | 10 | New details are added, e.g. a link to cluster algebras |
Keyphrases: Berkovich analytic spaces, Exotic n-spheres, Exotic smooth structures, Pachner moves, Piecewise-linear manifolds, Poincare conjecture, Rado graph, Richter-Gebert’s Universality theorem, Subdivisions, Valuation, Weighted simplicial complexes, discrete geometry, inverse limit, simplicial complexes, triangulations |
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