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Related papers: Equivariant analogues of Zuckerman functors

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We generalize and clarify Gerstenhaber and Schack's "Special Cohomology Comparison Theorem". More specifically we obtain a fully faithful functor between the derived categories of bimodules over a prestack over a small category U and the…

K-Theory and Homology · Mathematics 2009-05-15 Wendy Lowen , Michel Van den Bergh

We show that equivariant tilting modules over equivariant algebras induce equivalences of derived factorization categories. As an application, we show that the derived category of a noncommutative resolution of a linear section of a…

Algebraic Geometry · Mathematics 2021-06-03 Yuki Hirano

We investigate relative cohomology functors on subcategories of abelian categories via Auslander-Buchweitz approximations and the resulting strict resolutions. We verify that certain comparison maps between these functors are isomorphisms…

K-Theory and Homology · Mathematics 2007-06-27 Sean Sather-Wagstaff , Tirdad Sharif , Diana White

We use localization formulas in the theory of equivariant cohomology to rederive the wall crossing formulas of Li-Liu and Okonek-Teleman for Seiberg-Witten invariants.

Differential Geometry · Mathematics 2007-05-23 Huai-Dong Cao , Jian Zhou

We develop a theory of equivariant factorization algebras on varieties with an action of a connected algebraic group $G$, extending the definitions of Francis-Gaitsgory [FG] and Beilinson-Drinfeld [BD1] to the equivariant setting. We define…

Representation Theory · Mathematics 2020-12-01 Dylan Butson

We compute the equivariant cohomology of complex projective spaces associated to finite-dimensional representations of $C_2$, using ordinary cohomology graded on representations of the fundamental groupoid, with coefficients in the Burnside…

Algebraic Topology · Mathematics 2022-05-17 Steven R. Costenoble , Thomas Hudson , Sean Tilson

We use localization method to understand the rational equivariant cohomology rings of real Grassmannians and oriented Grassmannians, then relate this to the Leray-Borel description which says the ring generators are equivariant Pontryagin…

Algebraic Topology · Mathematics 2025-06-24 Chen He

We consider Knapp-Vogan Hecke algebras in the quantum group setting. This allows us to produce a quantum analogue of the Bernstein functor as a first step towards the cohomological induction for quantum groups.

Quantum Algebra · Mathematics 2007-05-23 S. Sinel'shchikov , A. Stolin , L. Vaksman

For coalgebras $C$ and $D$, Takeuchi proved that the category of linear functors from $\mathfrak{M}^C$ to $\mathfrak{M}^D$ preserving small coproducts is equivalent to the category of $C$-$D$-bicomodules, where $\mathfrak{M}^C$ for a…

Quantum Algebra · Mathematics 2025-10-10 Taiki Shibata , Kenichi Shimizu

We construct an exact functor from the category of Harish-Chandra modules of $\mathrm{GL}_n(\mathbb C)$ to the category of finite-dimensional modules of graded Hecke algebras of type A. We show that the functor preserves parabolically…

Representation Theory · Mathematics 2024-10-16 Kei Yuen Chan , Kayue Daniel Wong

We introduce super-analogues of the Schur functors defined by Akin, Buchsbaum and Weyman. These {\em Schur superfunctors} may be viewed as characteristic-free analogues of the finite dimensional atypical irreducible modules over the Lie…

Representation Theory · Mathematics 2014-03-27 Jonathan Axtell

In this paper, we construct a functorial quantization of (co)Poisson Hopf algebras within a broad categorical framework. We further introduce categories naturally associated with (co)Poisson Hopf algebras, namely Drinfeld-Yetter modules.…

Quantum Algebra · Mathematics 2026-03-16 Andrea Rivezzi , Jonas Schnitzer

We observe that on the level of derived categories, representations of the Lie algebra of a semisimple algebraic group over a field of characteristic $p> h$ (where $h$ is the Coxeter number), with a given (generalized) central character are…

Representation Theory · Mathematics 2007-05-23 Roman Bezrukavnikov , Ivan Mirković , Dmitriy Rumynin

We construct a functor valued invariant of oriented tangles on certain singular blocks of category O. Parabolic subcategories of these blocks categorify tensor products of various fundamental sl(k) representations. Projective functors…

Quantum Algebra · Mathematics 2007-05-23 Joshua Sussan

We discuss recent developments on branching problems of irreducible unitary representations $\pi$ of real reductive groups when restricted to reductive subgroups. Highlighting the case where the underlying $(g,K)$-modules of $\pi$ are…

Representation Theory · Mathematics 2012-02-28 Toshiyuki Kobayashi

Let $g$ be a complex semisimple Lie algebra with Weyl group $W$. Let $H(W)$ be the Iwahori-Hecke algebra associated to $W$. For each $w\in W$, let $T_w$ and $C_w$ be the corresponding $Z$-graded twisting functor and $Z$-graded shuffling…

Representation Theory · Mathematics 2024-09-06 Ming Fang , Jun Hu , Yujiao Sun

We quantize parabolic flag manifolds and describe categories of equivariant quantum $\D$-modules on them at a singular central character. We compute global sections at any $q \in \C^*$ and we also prove a singular version of…

Representation Theory · Mathematics 2013-09-23 Erik Backelin , Kobi Kremnizer

A bivariant functor is defined on a category of *-algebras and a category of operator ideals, both with actions of a second countable group $G$, into the category of abelian monoids. The element of the bivariant functor will be…

K-Theory and Homology · Mathematics 2011-02-01 Magnus Goffeng

We consider bases for the cohomology space of regular semisimple Hessenberg varieties, consisting of the classes that naturally arise from the Bialynicki-Birula decomposition of the Hessenberg varieties. We give an explicit combinatorial…

Algebraic Geometry · Mathematics 2023-03-30 Soojin Cho , Jaehyun Hong , Eunjeong Lee

The purpose of this paper is to study categorifications of tensor products of finite dimensional modules for the quantum group for sl(2). The main categorification is obtained using certain Harish-Chandra bimodules for the complex Lie…

Quantum Algebra · Mathematics 2007-06-13 Igor Frenkel , Mikhail Khovanov , Catharina Stroppel