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arXiv · 1402.5509

On the Cox ring of blowing up the diagonal

Hendrik Bäker
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Abstract

We compute the Cox rings of the blow-ups $\mathrm{Bl}_Δ(X'\times X')$ and $\mathrm{Bl}_Δ(\mathbb P_1^n)$ where $X'$ is a product of projective spaces and $Δ$ is the (generalised) diagonal.

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Hendrik Bäker. 2014-02-22. On the Cox ring of blowing up the diagonal. https://arxiv.org/abs/1402.5509

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