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arXiv · 2509.15003

Horospherical subgroups in positive characteristic

Matilde Maccan·Ronan Terpereau
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Abstract

We investigate horospherical homogeneous spaces--a class of spherical homogeneous spaces encompassing both flag varieties and algebraic tori--over algebraically closed fields of characteristic p>0, and establish their complete classification for p>2.

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Matilde Maccan, Ronan Terpereau. 2025-09-18. Horospherical subgroups in positive characteristic. https://doi.org/10.4153/s0008439526102288

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