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Townsend Porcher

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Preprint Aug 2026

When is the matroid Schubert variety $\mathbb{Q}$-Gorenstein?

Let $E$ be a finite set, and let $V \subseteq \mathbb{C}^E$ be a linear subspace that is not contained in any coordinate hyperplane. The closure of $V$ in the product of projective lines $(\mathbb{P}^1)^E$ is a singular variety $Y_V$ known as the matroid Schubert variety (or arrangement Schubert variety). We use operat...

Townsend Porcher · 0 citations