Exotic embeddings of $#6\Bbb R\roman{P}^2$ in the 4-sphere

Sergey Finashin

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arXiv · math/0703285

Exotic embeddings of $#6\Bbb R\roman{P}^2$ in the 4-sphere

Sergey Finashin

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Abstract

We present an infinite sequence of smooth embeddings of a connected sum of 6 projective planes in the 4-sphere, which are all ambient homeomorphic, but pairwise ambient non-diffeomorphic. The double covers of the 4-sphere ramified along these surfaces form a family of the exotic $\Bbb CP^2#5\bar{\Bbb CP^2}$ constructed recently by Park, Stipsicz and Szabó.

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Sergey Finashin. 2007-03-10. Exotic embeddings of $#6\Bbb R\roman{P}^2$ in the 4-sphere. https://arxiv.org/abs/math/0703285

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