Deformations of Pairs of Kleinian Singularities

Author:

Klyuev Daniil1

Affiliation:

1. Department of Mathematics , MIT, 77 Mass. Ave, Cambridge, MA 02139, USA

Abstract

Abstract Kleinian singularities, that is, the varieties corresponding to the algebras of invariants of Kleinian groups are of fundamental importance for Algebraic geometry, Representation theory, and Singularity theory. The filtered deformations of these algebras of invariants were classified by Brieskorn (the commutative case) and Losev (the general case). To an inclusion of Kleinian groups, there is the corresponding inclusion of algebras of invariants. We classify deformations of these inclusions when the smaller subgroup is normal in the larger.

Publisher

Oxford University Press (OUP)

Subject

General Mathematics

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