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Compactification of Deligne-Lusztig varieties

Bonnafe, C (Franche-Comté)
Friday 26 June 2009, 14:00-15:00

Seminar Room 1, Newton Institute


Joint work with Raphaël Rouquier: we give an explicit construction of the normalization of the Bott-Samelson-Demazure compactification of Deligne-Lusztig varieties in their classical étale covering (with a finite torus as Galois group). We retrieve an old result of Deligne and Lusztig about the local monodromy around the divisors of this compactification.


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