Abstract:Let G be an algebraic group and Γ a finite subgroup of automorphisms of G. Fix also a possibly ramified Γ-covering X → X . In this setting one may define the notion of (Γ,G)-bundles over X and, in this paper, we give a description of these objects in terms of H -bundles on X , for an appropriate group H over X which depends on the local type of the (Γ,G)-bundles we intend to parametrize. This extends, and along the way clarifies, an earlier work of Balaji and Seshadri.Résumé. Soit G un groupe algébrique et Γ u… Show more
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