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arXiv · 2605.03890

Equivariant intermediate Jacobians and intersections of two quadrics

Federico Scavia
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Abstract

We present a short proof of the following theorem of Hassett and Tschinkel: for every finite group $G$, a $G$-equivariant smooth complete intersection of two quadrics in $\mathbb{P}^5_{\mathbb{C}}$ is projectively $G$-linear if and only if it contains a $G$-invariant line.

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Federico Scavia. 2026-05-05. Equivariant intermediate Jacobians and intersections of two quadrics. https://arxiv.org/abs/2605.03890

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