On nonnegatively graded Weierstrass points
On nonnegatively graded Weierstrass points
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关于非负评分的 Weierstrass 点
DOI:
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发表时间:
2021
期刊:
影响因子:
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通讯作者:
Jhon Quispe Vargas
中科院分区:
文献类型:
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作者:
André Contiero;A. Fontes;J. Stevens;Jhon Quispe Vargas
We provide a new lower bound for the dimension of the moduli space of smooth pointed curves with prescribed Weierstrass semigroup at the marked point, derived from the Deligne–Greuel formula and Pinkham’s equivariant deformation theory. Using Buchweitz’s description of the first cohomology module of the cotangent complex for monomial curves, we show that our lower bound improves a recently one given by Pflueger. By allowing semigroups running over suitable families of symmetric semigroups of multiplicity six, we show that this new lower bound is attained, and that the corresponding moduli spaces are non-empty and of pure dimension.
DOI:
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发表时间:
2008
期刊:
Tokyo Journal of Mathematics 31
影响因子:
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作者:
Suzuki;H.;Tetsuo Nakano
通讯作者:
Tetsuo Nakano