By Michel Brion
Weil's regularization theorem asserts that for any rational action of an algebraic group G on a variety X\, there exists a variety on which G acts regularly and which is equivariantly birational to X. This theorem and its refinements are key ingredients for classifying algebraic subgroups of groups of birational transformations\, in classical work of Enriques and recent work of Blanc\, Zimmermann\, Fong and others. The lectures will first discuss the notions occurring in the regularization theorem\, and some of its applications. We will then present a proof of this theorem and further developments.
By J�r�my Blanc
By J�r�my Blanc
By J�r�my Blanc
By Jeffrey Diller
By Jeffrey Diller
By Ronan Terpereau
By Ronan Terpereau
By Ronan Terpereau
By Immanuel van Santen
By Marc Abboud
By Adrien Dubouloz
By Andrea Fanelli
By Carolina Araujo
By Carolina Araujo
By J�r�my Blanc
By Egor Yasinsky
By Immanuel van Santen
By Jean-Pierre Luminet
By Ronald Coifman
