Nombre de points des surfaces de Deligne et Lusztig

Resume On etudie dans ce travail des exemples de surfaces algebriques sur un corps fini qui ont beaucoup de points relativement a leurs nombres de Betti et qui ont un groupe d'automorphismes important. Ces exemples sont construits a partir des varietes de Deligne et Lusztig. We present examples of algebraic surfaces on a finite field with many points with respect to their Betti numbers and with a large automorphism group. These examples are constructed from Deligne–Lusztig varieties.

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