Exotic Smooth Structures on Small 4-Manifolds
classification
🧮 math.GT
math.SG
keywords
constructdiffeomorphiceitherexampleexoticfirsthomeomorphicmanifold
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Let M be either CP^2#3CP^2bar or 3CP^2#5CP^2bar. We construct the first example of a simply-connected symplectic 4-manifold that is homeomorphic but not diffeomorphic to M.
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