Mathematics – Algebraic Geometry
Scientific paper
2008-06-23
Mathematics
Algebraic Geometry
26 pages
Scientific paper
We classify principal bundles over anti-affine schemes with affine and commutative structural group. We show that this yields the classification of quasi-abelian varieties over a field k (i.e., group k-schemes with no non constant global functions). The interest of this result is given by the fact that the classification of smooth group k-schemes is reduced to the classification of quasi-abelian varieties and of certain affine group schemes.
de Salas Carlos Sancho
de Salas Fernando Sancho
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