Automorphisms of Hilbert schemes of points on surfaces
Automorphisms of Hilbert schemes of points on surfaces
复制标题
曲面上点的希尔伯特格式的自同构
DOI:
10.1090/tran/8106
复制
发表时间:
2019
影响因子:
1.3
通讯作者:
J. Rennemo
中科院分区:
文献类型:
--
作者:
Pieter Belmans;G. Oberdieck;J. Rennemo
We show that every automorphism of the Hilbert scheme of
n
n
points on a weak Fano or general type surface is natural, i.e., induced by an automorphism of the surface, unless the surface is a product of curves and
n
=
2
n=2
. In the exceptional case there exists a unique nonnatural automorphism. More generally, we prove that any isomorphism between Hilbert schemes of points on smooth projective surfaces, where one of the surfaces is weak Fano or of general type and not equal to the product of curves, is natural. We also show that every automorphism of the Hilbert scheme of
2
2
points on
P
n
\mathbb {P}^n
is natural.