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Exotic sphere

Ciro Santilli (@cirosantilli, 37) ... Mathematics Area of mathematics Calculus Topology Homotopy Generalized Poincaré conjecture
Updated 2025-07-16  1 By others on same topic  0 Discussions Create my own version

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Exotic sphere by Wikipedia Bot 0
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An exotic sphere is a differentiable manifold that is homeomorphic but not diffeomorphic to the standard \( n \)-dimensional sphere \( S^n \) in Euclidean space. This means that while two spaces may have the same topological structure (they can be continuously deformed into each other without tearing or gluing), they have different smooth structures (the way we can differentiate functions on them).
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