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Une compactification des champs classifiant les chtoucas de Drinfeld
Author(s):
Laurent
Lafforgue
Journal:
J. Amer. Math. Soc.
11
(1998),
1001-1036.
MSC (1991):
Primary 11R58, 11G09, 14G35
MathSciNet review:
1609893
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Abstract:
One knows that the notion of Harder-Narasimhan's canonical polygon allows one to write the stacks classifying Drinfeld's shtukas of rank at least as inductive limits of open substacks of finite type. When there is no level structure, we present here a smooth modular compactification of each such open substack, generalizing Drinfeld's construction for rank . Résumé. On sait qu'en rang au moins , la notion de polygone canonique de Harder-Narasimhan permet d'écrire les champs classifiant les chtoucas de Drinfeld comme des réunions filtrantes d'ouverts de type fini. Quand il n'y a pas de structure de niveau, on présente ici une compactification modulaire lisse de chacun de ces ouverts, généralisant celles de Drinfeld en rang .
References:
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- 2.
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over a global field of characteristic , Functional analysis and its applications 22, 1988. MR 90c:11038 - 3.
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Additional Information:
Laurent
Lafforgue
Affiliation:
URA D0752 du CNRS, Université de Paris--Sud, Mathématiques, bât. 425, 91405 Orsay Cedex, France
Email:
laurent.lafforgue@math.u-psud.fr
DOI:
10.1090/S0894-0347-98-00272-0
PII:
S 0894-0347(98)00272-0
Keywords:
Corps de fonctions,
champs modulaires de Drinfeld,
chtoucas
Received by editor(s):
June 9, 1997
Received by editor(s) in revised form:
March 30, 1998
Copyright of article:
Copyright
1998,
American Mathematical Society
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