On the Equations Defining Some Hilbert Schemes
On the Equations Defining Some Hilbert Schemes
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关于定义一些希尔伯特方案的方程
DOI:
10.1007/s10013-021-00545-0
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发表时间:
2022
影响因子:
0.8
通讯作者:
Hauenstein J
中科院分区:
文献类型:
--
作者:
Hauenstein J
We work out details of the extrinsic geometry for two Hilbert schemes of some contemporary interest: the Hilbert scheme \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\text {Hilb}^{2} \mathbb {P}^{2}$\end{document} of two points on \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\mathbb {P}^{2}$\end{document} and the dense open set parametrizing non-planar clusters in the punctual Hilbert schemeof clusters of length four onwith support at the origin. We find explicit equations in projective, respectively affine, embeddings for these spaces. In particular, we answer a question of Bernd Sturmfels who asked for a description of the latter space that is amenable to further computations. While the explicit equations we find are controlled in a precise way by the representation theory of SL3, our arguments also rely on computer algebra.
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影响因子:
0.5
作者:
Hauenstein, Jonathan D.;Helmer, Martin
通讯作者:
Helmer, Martin
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
A. Dimca;Balázs Szendrői
通讯作者:
Balázs Szendrői
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
S. Tikhomirov
通讯作者:
S. Tikhomirov
DOI:
10.1145/2608628.2608651
发表时间:
2014
期刊:
arXiv: Numerical Analysis
影响因子:
--
作者:
J. Hauenstein;Ian Haywood;Alan C. Liddell
通讯作者:
Alan C. Liddell
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Sarah B. Brodsky;B. Sturmfels
通讯作者:
B. Sturmfels