Connected Components of Moduli Stacks of Torsors via Tamagawa Numbers
نویسندگان
چکیده
منابع مشابه
Connected Components of Moduli Stacks of Torsors via Tamagawa Numbers
LetX be a smooth projective geometrically connected curve over a finite field with function field K. Let G be a connected semisimple group scheme over X . Under certain hypothesis we prove the equality of two numbers associated with G. The first is an arithmetic invariant, its Tamagawa number. The second, is a geometric invariant, the number of connected components of the moduli stack of G-tors...
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ژورنال
عنوان ژورنال: Canadian Journal of Mathematics
سال: 2009
ISSN: 0008-414X,1496-4279
DOI: 10.4153/cjm-2009-001-5