Géométrie algébrique, Théorie des nombres
Finiteness theorems for algebraic tori over function fields
Comptes Rendus. Mathématique, Tome 359 (2021) no. 8, pp. 939-944.

Nous présentons plusieurs résultats de finitude pour les tores (et, plus généralement, pour les groupes algébriques dont la composante connexe est un tore) définis sur les corps de type fini et les corps de fonctions des variétés algébriques définies sur les corps satisfaisant la condition (F) de Serre.

We present a number of finiteness results for algebraic tori (and, more generally, for algebraic groups with toric connected component) over two classes of fields: finitely generated fields and function fields of algebraic varieties over fields of type (F), as defined by J.-P. Serre.

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DOI : 10.5802/crmath.248
Rapinchuk, Andrei S. 1 ; Rapinchuk, Igor A. 2

1 Department of Mathematics, University of Virginia, Charlottesville, VA 22904-4137, USA
2 Department of Mathematics, Michigan State University, East Lansing, MI 48824, USA
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Rapinchuk, Andrei S.; Rapinchuk, Igor A. Finiteness theorems for algebraic tori over function fields. Comptes Rendus. Mathématique, Tome 359 (2021) no. 8, pp. 939-944. doi : 10.5802/crmath.248. http://www.numdam.org/articles/10.5802/crmath.248/

[1] Borel, Armand Some finiteness properties of adele groups over number fields, Publ. Math., Inst. Hautes Étud. Sci., Volume 16 (1963), pp. 101-126 | Numdam | MR | Zbl

[2] Borel, Armand; Serre, Jean-Pierre Théorèmes de finitude en cohomologie galoisienne, Comment. Math. Helv., Volume 39 (1964), pp. 111-164 | DOI | Zbl

[3] Chernousov, Vladimir I.; Rapinchuk, Andrei S.; Rapinchuk, Igor A. Spinor groups with good reduction, Compos. Math., Volume 155 (2019) no. 3, pp. 484-527 | DOI | MR | Zbl

[4] Chernousov, Vladimir I.; Rapinchuk, Andrei S.; Rapinchuk, Igor A. The finiteness of the genus of a finite-dimensional division algebra, and some generalizations, Isr. J. Math., Volume 236 (2020) no. 2, pp. 747-799 | DOI | MR | Zbl

[5] Esnault, Hélène; Shusterman, Mark; Srinivas, Vasudevan Finite presentation of the tame fundamental groups (2021) (preprint) | arXiv

[6] Gille, Philippe; Moret-Bailly, Laurent Actions algébriques de groupes arithmétiques, Torsors, étale homotopy and applications to rational points (London Mathematical Society Lecture Note Series), Volume 405, Cambridge University Press, 2013, pp. 231-249 | DOI | Zbl

[7] Revêtements étales et groupe fondamentale (SGA 1) (Grothendieck, Alexander; Raynaud, Michèle, eds.), Lecture Notes in Mathematics, 224, Springer, 1971 | Zbl

[8] Harada, Shinya; Hiranouchi, Toshiro Smallness of fundamental groups of arithmetic schemes, J. Number Theory, Volume 129 (2009) no. 11, pp. 2702-2712 | DOI | MR | Zbl

[9] Kahn, Bruno Sur le groupe des classes d’un schéma arithmétique, Bull. Soc. Math. Fr., Volume 134 (2006) no. 3, pp. 395-415 | DOI | Zbl

[10] Platonov, Vladimir; Rapinchuk, Andrei S. Algebraic Groups and Number Theory, Pure and Applied Mathematics, 139, Academic Press Inc., 1994 | MR | Zbl

[11] Rapinchuk, Andrei S.; Rapinchuk, Igor A. Linear algebraic groups with good reduction, Res. Math. Sci., Volume 7 (2020) no. 3, 28, 65 pages | MR | Zbl

[12] Raynaud, Michèle Propriétés de finitude du groupe fondamental, SGA 7 I (Lecture Notes in Mathematics), Volume 288, Springer, 1972, pp. 25-31 | MR | Zbl

[13] Serre, Jean-Pierre Galois cohomology, Springer, 1997 | Zbl

[14] Ullmo, Emmanuel; Yafaev, Andrei Galois orbits and equidistribution of special subvarieties: towards the André–Oort conjecture, Ann. Math., Volume 180 (2014) no. 3, pp. 823-865 | DOI | Zbl

[15] Voskresenskiĭ, Valentin Algebraic Groups and Their Birational Invariants, Translations of Mathematical Monographs, 179, American Mathematical Society, 1998 | MR

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