A new linear quotient of C 4 admitting a symplectic resolution

被引:13
作者
Bellamy, Gwyn [1 ]
Schedler, Travis [2 ]
机构
[1] Univ Manchester, Sch Math, Manchester M13 9PL, Lancs, England
[2] MIT, Dept Math, Cambridge, MA 02139 USA
基金
英国工程与自然科学研究理事会;
关键词
Symplectic resolution; Symplectic smoothing; Symplectic reflection algebra; Poisson algebra; Poisson variety; Symplectic leaves; Quotient singularity; McKay correspondence; POISSON DEFORMATIONS; REFLECTION ALGEBRAS; MODULES;
D O I
10.1007/s00209-012-1028-6
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We show that the quotient C (4)/G admits a symplectic resolution for . Here Q (8) is the quaternionic group of order eight and D (8) is the dihedral group of order eight, and G is the quotient of their direct product which identifies the nontrivial central elements -Id of each. It is equipped with the tensor product representation . This group is also naturally a subgroup of the wreath product group . We compute the singular locus of the family of commutative spherical symplectic reflection algebras deforming C (4)/G. We also discuss preliminary investigations on the more general question of classifying linear quotients V/G admitting symplectic resolutions.
引用
收藏
页码:753 / 769
页数:17
相关论文
共 23 条
[1]  
Baohua F., 2006, Ann. Math. Blaise Pascal, V13, P209, DOI [10.5802/ambp.218, DOI 10.5802/AMBP.218]
[2]  
Bellamy G., 2009, ARXIV09110069V1
[3]   On singular Calogero-Moser spaces [J].
Bellamy, Gwyn .
BULLETIN OF THE LONDON MATHEMATICAL SOCIETY, 2009, 41 :315-326
[4]   The Magma algebra system .1. The user language [J].
Bosma, W ;
Cannon, J ;
Playoust, C .
JOURNAL OF SYMBOLIC COMPUTATION, 1997, 24 (3-4) :235-265
[5]  
Brown KA, 2003, J REINE ANGEW MATH, V559, P193
[6]  
BRYLINSKI JL, 1988, J DIFFER GEOM, V28, P93
[7]   FINITE QUATERNIONIC REFLECTION GROUPS [J].
COHEN, AM .
JOURNAL OF ALGEBRA, 1980, 64 (02) :293-324
[8]   Symplectic reflection algebras, Calogero-Moser space, and deformed Harish-Chandra homomorphism [J].
Etingof, P ;
Ginzburg, V .
INVENTIONES MATHEMATICAE, 2002, 147 (02) :243-348
[9]  
Etingof P., 2011, ARXIV11015171
[10]  
Etingof P., 2011, ARXIV11094712