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arXiv · 1803.08216

Varieties with nef diagonal

Taku Suzuki·Kiwamu Watanabe
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Abstract

For a smooth projective variety $X$, we consider when the diagonal $\Delta_X$ is nef as a cycle on $X\times X$. In particular, we give a classification of complete intersections and smooth del Pezzo varieties where the diagonal is nef. We also study the nefness of the diagonal for spherical varieties.

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Taku Suzuki, Kiwamu Watanabe. 2018-03-22. Varieties with nef diagonal. https://arxiv.org/abs/1803.08216

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