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Sasaki-Einstein metrics on connected sums of S3× S4

Dasol Jeong, In-Kyun Kim, Jihun Park, Joonyeong Won

math.DGarXiv:2608.29695

Abstract

We completely characterize the n-fold connected sums of S3× S4 that admit Sasaki-Einstein structures by proving that such a structure exists if and only if n is even.

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