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arXiv · 2601.08704

Singular del Pezzo surfaces and isotropic flag varieties

Michele Bianco·Luis E. Solá Conde
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Abstract

We compute the Chow quotient of the complete flag variety of isotropic subspaces of a four dimensional complex vector space with respect to a skew/symmetric form, and show that it is a singular del Pezzo surface of degree four.

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Michele Bianco, Luis E. Solá Conde. 2026-01-13. Singular del Pezzo surfaces and isotropic flag varieties. https://arxiv.org/abs/2601.08704

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