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Connected sum decompositions of high-dimensional manifolds
Published 5 Sep 2019 in math.GT | (1909.02628v2)
Abstract: The classical Kneser-Milnor theorem says that every closed oriented connected 3-dimensional manifold admits a unique connected sum decomposition into manifolds that cannot be decomposed any further. We discuss to what degree such decompositions exist in higher dimensions and we show that in many settings uniqueness fails in higher dimensions.
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