(1) School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Raod, 400 045 Colaba, Mumbai, India
Abstract:
We classify principalG-bundles on the projective line over an arbitrary fieldk of characteristic ≠ 2 or 3, whereG is a reductive group. If such a bundle is trivial at ak-rational point, then the structure group can be reduced to a maximal torus.