Nettet14. sep. 2016 · Let G be a finite subgroup of GL(2) acting on A2/{0} freely. The G-orbit Hilbert scheme G-Hilb(A2) is a minimal resolution of the quotient A2/G as given by A. Ishii, On the McKay correspondence for a finite small subgroup of GL(2,C), J. Reine Angew. Math. 549 (2002), 221–233. We determine the generator sheaf of the ideal defining the … Nettet5. mar. 2014 · Since two-dimensional linearly reductive quotient singularities over algebraically closed fields of positive characteristic are F-regular (see [LMM21, …
Mathematisches Institut der Universität Bonn
Nettet8. okt. 2024 · with Christian Liedtke and Gebhard Martin, Linearly Reductive Quotient Singularities , preprint arXiv:2102.01067 ( v2: 2024/10/12 ) Purely inseparable coverings of rational double points in positive characteristic , Journal of Singularities 24 (2024), 79–95 . DOI: 10.5427/jsing.2024.24b ( arXiv:2003.10344v3 ) Nettethold for arbitrary reductive representations: more explicitly, in all cases known to us, when dim V/G = 2, V/G is a quotient singularity. The classification of G-invariant functions on … javascript programiz online
[2103.03721] Arithmetic and geometric deformations of $F$-pure …
NettetIn this article, we study linearly reductive group schemes G, actions as just described, and the associated quotient singularities. Most of our results are known in the case … Nettet7. okt. 2024 · Finally, we study the question whether rational double point singularities are quotient singularities by group schemes and ... linearly reductive subgroup scheme of GL 2,k (resp. SL 2,k), see ... Nettet16. des. 2009 · I've read that quotient singularities (that is, spectra of invariant subrings of finite groups acting linearly on polynomial rings) have rational singularities. Is there … javascript print image from url