On Nori's Obstruction to Universal Bundles
classification
🧮 math.AG
keywords
bundlesuniversalbundleconsidercurvemainmodulinori
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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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