A study of irreducible components of Springer fibers using quiver varieties

It is a remarkable theorem by Maffei-Nakajima that the Slodowy variety, which is a subvariety of the resolution of the nilpotent cone, can be realized as a Nakajima quiver variety of type A. However, the isomorphism is rather implicit as it takes to solve a system of equations in which the variables are linear maps. In this paper, we construct solutions to this system under certain assumptions. This establishes an explicit and efficient way to compute the image of a complete flag contained in the Slodowy variety under the Maffei-Nakajima isomorphism and describe these flags in terms of quiver representations. As Slodowy varieties contain Springer fibers naturally, we can use these results to provide an explicit description of the irreducible components of two-row Springer fibers in terms of a family of kernel relations via quiver representations. (C) 2021 Elsevier Inc. All rights reserved.

Automated summary

The Maffei-Nakajima theorem demonstrates the realization of the Slodowy variety as a Nakajima quiver variety of type A, showing an implicit isomorphism that involves solving a system of equations with linear maps variables. This paper constructs solutions to this system and provides an explicit and efficient way to compute the image of a complete flag within the Slodowy variety under the Maffei-Nakajima isomorphism, while describing these flags in terms of quiver representations.