Obstructions to deforming curves on an Enriques-Fano 3-fold
Obstructions to deforming curves on an Enriques-Fano 3-fold
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Enriques-Fano 3 倍曲线变形障碍
DOI:
10.1016/j.jpaa.2021.106677
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发表时间:
2021
影响因子:
0.8
通讯作者:
Nasu Hirokazu
中科院分区:
文献类型:
--
作者:
R.V. Gurjar;増田佳代,宮西正宜;Yuya Mizuno;Shigeki Akiyama;宮西正宜,伊藤浩行;Nasu Hirokazu
We study the deformations of a curve C on an Enriques-Fano 3-fold X⊂ P n, assuming that C is contained in a smooth hyperplane section S⊂ X, that is a smooth Enriques surface in X. We give a sufficient condition for C to be (un) obstructed in X, in terms of half pencils and (− 2)-curves on S. Let Hilb s c X denote the Hilbert scheme of smooth connected curves in X. By using the Hilbert-flag scheme of X, we also compute the dimension of Hilb s c X at [C] and give a sufficient condition for Hilb s c X to contain a generically non-reduced irreducible component of Mumford type.
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DOI:
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发表时间:
2006
期刊:
影响因子:
--
作者:
塩田 徹治;筧 三郎;覧 三郎;筧 三郎;筧 三郎;塩田 徹治;塩田 徹治
通讯作者:
塩田 徹治
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
Yuri Prokhorov
通讯作者:
Yuri Prokhorov
影响因子:
--
作者:
Tatsuhiro Minagawa
通讯作者:
Tatsuhiro Minagawa
影响因子:
0.7
作者:
Takeshi Sano
通讯作者:
Takeshi Sano
DOI:
--
发表时间:
--
期刊:
Geometry
影响因子:
--
作者:
N.Nakayama;Yoshio Fujimoto;Shigeru Mukai and Hirokazu Nasu
通讯作者:
Shigeru Mukai and Hirokazu Nasu