On Nori's Obstruction to Universal Bundles

Details On Nori's Obstruction to Universal Bundles On Nori's Obstruction to Universal Bundles

2009-08-03

arxiv.org/abs/0908.0313v2

Mathematics

Algebraic Geometry

Scientific paper

Let $G$ be $Sl_n, Sp(2n)$ or SO(2n). We consider the moduli space $M$ of
semistable principal $G$-bundles over a curve $X$. Our main result is that if
$U$ is a Zariski open subset of $M$ then there is no universal bundle on
$U\times X$.

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