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arXiv · 2002.11016

Divisorial contractions to codimension three orbits

Samuel Boissière·Enrica Floris
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Abstract

Let $G$ be a connected algebraic group. We study $G$-equivariant extremal contractions whose centre is a codimension three $G$-simply connected orbit. In the spirit of an important result by Kawakita in 2001, we prove that those contractions are weighted blow-ups.

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Samuel Boissière, Enrica Floris. 2020-02-25. Divisorial contractions to codimension three orbits. https://doi.org/10.46298/epiga.2021.7020

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