New constructions of nef classes on self-products of curves
New constructions of nef classes on self-products of curves
复制标题
曲线自积的 nef 类的新构造
DOI:
10.1007/s00209-022-03092-7
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发表时间:
2022
影响因子:
0.8
通讯作者:
Murayama, Takumi
中科院分区:
文献类型:
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作者:
Fulger, Mihai;Murayama, Takumi
We study the nef cone of self-products of a curve. When the curve is very general of genus, we construct a nontrivial class of self-intersection 0 on the boundary of the nef cone. Up to symmetry, this is the only known nontrivial boundary example that exists for all. When the curve is general, we identify nef classes that improve on known examples for arbitrary curves. We also consider self-products of more than two copies of the curve.
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DOI:
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2009
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