Quiver GIT for varieties with tilting bundles
Quiver GIT for varieties with tilting bundles
复制标题
Quiver GIT 适用于倾斜捆绑品种
DOI:
10.1007/s00229-016-0914-3
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发表时间:
2017
影响因子:
0.6
通讯作者:
Karmazyn J
中科院分区:
文献类型:
--
作者:
Karmazyn J
In the setting of a varietyXadmitting a tilting bundleTwe consider the problem of constructingXas a quiver GIT quotient of the algebra. We prove that if the tilting equivalence restricts to a bijection between the skyscraper sheaves ofXand the closed points of a quiver representation moduli functor forthenXis indeed a fine moduli space for this moduli functor, and we prove this result without any assumptions on the singularities ofX. As an application we consider varieties which are projective over an affine base such that the fibres are of dimension 1, and the derived pushforward of the structure sheaf onXis the structure sheaf on the base. In this situation there is a particular tilting bundle onXconstructed by Van den Bergh, and our result allows us to reconstructXas a quiver GIT quotient for an easy to describe stability condition and dimension vector. This result applies to flips and flops in the minimal model program, and in the situation of flops shows that both a variety and its flop appear as moduli spaces for algebras produced from different tilting bundles on the variety. We also give an application to rational surface singularities, showing that their minimal resolutions can always be constructed as quiver GIT quotients for specific dimension vectors and stability conditions. This gives a construction of minimal resolutions as moduli spaces for all rational surface singularities, generalising the G-Hilbert scheme moduli space construction which exists only for quotient singularities.
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DOI:
10.1090/s0002-9947-2012-05577-2
发表时间:
2010
影响因子:
1.3
作者:
R. Buchweitz;L. Hille
通讯作者:
L. Hille
影响因子:
1.7
作者:
Alastair Craw;Gregory G. Smith
通讯作者:
Gregory G. Smith
影响因子:
2.5
作者:
Craw A
通讯作者:
Craw A
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
John Calabrese;M. Groechenig
通讯作者:
M. Groechenig
DOI:
10.1017/cbo9780511735134.007
发表时间:
2004
期刊:
arXiv: Algebraic Geometry
影响因子:
--
作者:
L. Hille;M. Bergh
通讯作者:
M. Bergh