Divisorial contractions to codimension three orbitsArticle
Auteurs : Samuel Boissière ; Enrica Floris
NULL##NULL
Samuel Boissière;Enrica Floris
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.
Comment: 22 pages, 2 figures
Volume : Volume 5
Publié le : 12 juillet 2021
Accepté le : 12 juillet 2021
Soumis le : 23 décembre 2020
Mots-clés : Mathematics - Algebraic Geometry, 14E05, 14E30
Financement :
Source : OpenAIRE Graph- Fibrations and algebraic group actions; Financeur: French National Research Agency (ANR); Code: ANR-18-CE40-0003