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We study the construction of a modular generalized Springer correspondence for a possibly disconnected complex reductive algebraic group.

Representation Theory · Mathematics 2025-06-09 Kostas I. Psaromiligkos , Simon Riche

We show that representations of convolution algebras such as Lustzig's graded affine Hecke algebra or the quiver Hecke algebra and quiver Schur algebra in (affine) type A can be realised in terms of certain equivariant motivic sheaves…

Representation Theory · Mathematics 2021-11-16 Jens Niklas Eberhardt , Catharina Stroppel

In this short paper we prove a derived version of the Riemann-Hilbert correspondence of Deligne and Simpson. Our generalization is twofold: on one side we consider families of representations of the full homotopy type of a smooth analytic…

Algebraic Geometry · Mathematics 2017-03-14 Mauro Porta

We complete the construction of the modular generalized Springer correspondence for an arbitrary connected reductive group, with a uniform proof of the disjointness of induction series that avoids the case-by-case arguments for classical…

Representation Theory · Mathematics 2017-09-12 Pramod N. Achar , Anthony Henderson , Daniel Juteau , Simon Riche

We construct a geometric realization of categories of representations of affine Hecke algebras and split reductive $p$-adic groups via a $K$-motivic Springer theory. We suggest a connection to the coherent Springer theory of Ben-Zvi, Chen,…

Representation Theory · Mathematics 2024-01-30 Jens Niklas Eberhardt

This is a survey article on the Springer correspondence for symmetric spaces. We discuss various generalization of the theory of the Springer correspondence for reductive groups to symmetric spaces and exotic symmetric spaces associated to…

Representation Theory · Mathematics 2019-09-17 Toshiaki Shoji

We define the notion of basic set data for finite groups (building on the notion of basic set, but including an order on the irreducible characters as part of the structure), and we prove that the Springer correspondence provides basic set…

Representation Theory · Mathematics 2021-02-08 Daniel Juteau , Cédric Lecouvey , Karine Sorlin

We prove a derived equivalence between each block of the derived category of sheaves on the nilpotent cone and the category of differential graded modules over a degeneration of Lusztig's graded Hecke algebra. Along the way, we construct…

Representation Theory · Mathematics 2017-08-28 Laura Rider , Amber Russell

In this paper we establish Springer correspondence for the symmetric pair $(\mathrm{SL}(N),\mathrm{SO}(N))$ using Fourier transform, parabolic induction functor, and a nearby cycle sheaves construction due to Grinberg. As applications, we…

Representation Theory · Mathematics 2020-06-23 Tsao-Hsien Chen , Kari Vilonen , Ting Xue

We show that the motive of a Springer fiber is pure Tate. We then consider a category of equivariant Springer motives on the nilpotent cone and construct an equivalence to the derived category of graded modules over the graded affine Hecke…

Representation Theory · Mathematics 2020-08-05 Jens Niklas Eberhardt

The Springer correspondence makes a link between the characters of a Weyl group and the geometry of the nilpotent cone of the corresponding semisimple Lie algebra. In this article, we consider a modular version of the theory, and show that…

Representation Theory · Mathematics 2014-10-07 Daniel Juteau

The Springer resolution of the nilpotent cone is used to give a geometric construction of the irreducible representations of Weyl groups. Borho and MacPherson obtain the Springer correspondence by applying the decomposition theorem to the…

Algebraic Geometry · Mathematics 2020-03-02 William Graham , Martha Precup , Amber Russell

We complete the determination of the generalised Springer correspondence for connected reductive algebraic groups, by proving a conjecture of Lusztig on the last open cases which occur for groups of type $E_8$.

Representation Theory · Mathematics 2022-07-14 Jonas Hetz

The Lusztig-Shoji algorithm is generalized to a complex reflection group $W$ and give us a version of the Springer correspondence of $W$. We show that the combinatorics of generalized Springer correspondences of dihedral groups of order…

Representation Theory · Mathematics 2023-11-30 Susumu Higuchi

In 1976, Springer defined a correspondence making a link between the irreducible ordinary (characteristic zero) representations of a Weyl group and the geometry of the associated nilpotent variety. In this thesis, we define a modular…

Representation Theory · Mathematics 2009-01-26 Daniel Juteau

We establish a relation between the known parametrization of a family of irreducible representations of a Weyl group and Springer's correspondence. We outline a parametrization of unipotent character sheaves on a connected reductive group…

Representation Theory · Mathematics 2012-02-14 G. Lusztig

The present work is devoted to the study of motivic integration on quotient singularities. We give a new proof of a form of the McKay correspondence previously proved by Batyrev. The paper contains also some general results on motivic…

Algebraic Geometry · Mathematics 2007-12-06 J. Denef , F. Loeser

We present an extension and generalization of Sahlqvist--Van Benthem correspondence to the case of distribution-free modal logic, with, or without negation and/or implication connectives. We follow a reductionist strategy, reducing the…

Logic in Computer Science · Computer Science 2025-11-25 Chrysafis , Hartonas

In his earlier paper the author offered a program of generalization of Kolyvagin's result of finiteness of SH to the case of some motives which are quotients of cohomology motives of Shimura varieties. The present paper is devoted to the…

Algebraic Geometry · Mathematics 2007-11-14 D. Logachev

Recent work by a number of people has shown that complex reflection groups give rise to many representation-theoretic structures (e.g., generic degrees and families of characters), as though they were Weyl groups of algebraic groups.…

Representation Theory · Mathematics 2007-09-05 Pramod N. Achar , Anne-Marie Aubert
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