V. Shevchishin

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20242026

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math.DG2025

Anti-self-dual blowups II

Vsevolod Shevchishin, Gleb Smirnov

Let $X$ be a closed, oriented four-manifold with $b_{2}^{+} \leq 3$ , and suppose $X$ contains a collection of pairwise disjoint embedded $(- 2)$ -spheres. We prove that there is a Rieman…

math.DG2024

Anti-self-dual blowups

Vsevolod Shevchishin, Gleb Smirnov

Let $X$ be a closed, oriented four-manifold containing an embedded sphere with self-intersection number $(- 1)$ . Suppose that $b_{2}^{+} (X) \leq 3$ . We show that there exists a Riemanni…