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arXiv · 1703.00488

Horospherical stacks

Ariyan Javanpeykar·Kevin Langlois·Ronan Terpereau
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Abstract

We prove structure theorems for algebraic stacks with a reductive group action and a dense open substack isomorphic to a horospherical homogeneous space, and thereby obtain new examples of algebraic stacks which are global quotient stacks. Our results partially generalize the work of Fantechi-Mann-Nironi and Geraschenko-Satriano for abstract toric stacks.

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Ariyan Javanpeykar, Kevin Langlois, Ronan Terpereau. 2019-03-18. Horospherical stacks. https://doi.org/10.17879/85169767804

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