Geodesic
ON SMOOTHNESS OF MINIMAL MODELS OF QUOTIENT SINGULARITIES BY FINITE SUBGROUPS OF SLn(C)
Glasgow mathematical journal, Tome 60 (2018) no. 3, pp. 603-634

Voir la notice de l'article provenant de la source Cambridge University Press

We prove that a quotient singularity Cn/G by a finite subgroup G ⊂ SLn(C) has a crepant resolution only if G is generated by junior elements. This is a generalization of the result of Verbitsky (Asian J. Math. 4(3) (2000), 553–563). We also give a procedure to compute the Cox ring of a minimal model of a given Cn/G explicitly from information of G. As an application, we investigate the smoothness of minimal models of some quotient singularities. Together with work of Bellamy and Schedler, this completes the classification of symplectically imprimitive quotient singularities that admit projective symplectic resolutions. 
YAMAGISHI, RYO. ON SMOOTHNESS OF MINIMAL MODELS OF QUOTIENT SINGULARITIES BY FINITE SUBGROUPS OF SLn(C). Glasgow mathematical journal, Tome 60 (2018) no. 3, pp. 603-634. doi: 10.1017/S0017089517000325
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