Séminaires : Séminaire de géométrie algébrique

Equipe(s) : tga,
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Email des responsables : frederic.han@imj-prg.fr
Salle : http://www.imj-prg.fr/tga/sem-ga
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Le jeudi à 14h.
septembre-décembre Sophie-Germain, janvier-mars ENS, avril-juin Jussieu

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Orateur(s) Egor Yasinsky - ,
Titre Sarkisov program: from surfaces over non-closed fields to higher dimensions.
Horaire14:00 à 15:00
The so-called Sarkisov program aims to decompose any birational map between two Mori fibre spaces into a sequence of elementary transformations, called Sarkisov links.

This tool is extremely useful in studying groups of birational self-maps of algebraic varieties. In this talk, I will first discuss some recent results and open questions in the Sarkisov program for algebraic surfaces over non-closed fields (including Severi-Brauer surfaces). Then I will show how these results imply some spectacular properties of higher Cremona groups. Based on joint works with J. Blanc and J. Schneider.

SalleENS Salle W