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Related papers: The Atiyah-Schmid formula for reductive groups

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In this paper we prove two formulas for the characters of representations of reductive groups. Both express the character of a representation in terms of the same geometric data attached to it. When specialized to the case of a compact Lie…

Representation Theory · Mathematics 2007-05-23 Wilfried Schmid , Kari Vilonen

We formulate a second adjoint theorem in the context of tempered representations of real reductive groups, and prove it in the case of SL(2,R).

Representation Theory · Mathematics 2016-03-30 Tyrone Crisp , Nigel Higson

We prove a Mackey formula for representations of finite groups of Lie type, in the case where the groups come from disconnected reductive groups.

Representation Theory · Mathematics 2024-03-21 Sergio Cía

We generalize Illusie's definition of the Atiyah class to complexes with quasi-coherent cohomology on arbitrary algebraic stacks. We show that this gives a global obstruction theory for moduli stacks of complexes in algebraic geometry…

Algebraic Geometry · Mathematics 2024-11-20 Nikolas Kuhn

In this article a general framework for studying analytic representations of a real Lie group G is introduced. Fundamental topological properties of the representations are analyzed. A notion of temperedness for analytic representations is…

Representation Theory · Mathematics 2019-02-20 Heiko Gimperlein , Bernhard Kroetz , Henrik Schlichtkrull

This is an introduction to the Atlas of Lie Groups and Representations software, for computing representation and structure theory of real reductive groups. The user is led through the basic commands of the software, via numerous examples.…

Representation Theory · Mathematics 2008-07-22 Jeffrey Adams

In topology there is a theorem of Atiyah, concerning K-theory of classifying space of connected compact Lie group. We consider an algebraic analogue of this theorem. We prove that for a split reductive algebraic group G over a field there…

K-Theory and Homology · Mathematics 2011-11-22 Alisa Knizel , Alexander Neshitov

I connect an old result of mine on a Lie algebra generalization of the Amitsur-Levitski theorem with equations for sheets in a reductive Lie algebra and with recent results of Kostant-Wallach on the variety of singular elements in a…

Representation Theory · Mathematics 2013-09-30 Bertram Kostant

We study Whittaker vectors (and Jacquet integrals) in the generalized principal series for a real reductive group. A functional equation for them is obtained. This allows to establish uniform estimates for their holomorphic extensions with…

Representation Theory · Mathematics 2024-02-06 E. P. van den Ban

In this note we survey Hodge-theoretic formulae of Atiyah-Meyer type for genera and characteristic classes of complex algebraic varieties, and derive some new and interesting applications. We also present various extensions to the singular…

Algebraic Geometry · Mathematics 2008-03-08 Laurentiu G. Maxim , Joerg Schuermann

We compute the algebraic K-theory of the Hecke algebra of a reductive p-adic group G using the fact that the Farrell-Jones Conjecture is known in this context. The main tool will be the properties of the associated Bruhat-Tits building and…

K-Theory and Homology · Mathematics 2025-05-21 Arthur Bartels , Wolfgang Lueck

We present a general formula for the Atiyah-Sutcliffe determinant function, which holds for any integer $n \geq 2$, as a global factor times a sum of terms, with each term similar to a higher degree cross-ratio. The formula is to our…

Metric Geometry · Mathematics 2019-03-15 Joseph Malkoun

We study equivariant Hermitian K-theory for representations of symplectic groups, especially $\mathrm{SL}_2$. The results are used to establish an Atiyah-Segal completion theorem for Hermitian $K$-theory and symplectic groups.

K-Theory and Homology · Mathematics 2025-11-05 Jens Hornbostel , Herman Rohrbach , Marcus Zibrowius

Let G be a reductive group over a non-archimedean local field and let S(G) be its Schwartz algebra. We compare Ext-groups of tempered G-representations in several module categories: smooth G-representations, algebraic S(G)-modules,…

Representation Theory · Mathematics 2013-12-04 Eric Opdam , Maarten Solleveld

Given an almost unimodular $G$, so that the Plancherel weight $\varphi_G$ on the group von Neumann algebra $L(G)$ is almost periodic, we show that the basic construction for the inclusion $L(G)^{\varphi_G} \leq L(G)$ is isomorphic to a…

Operator Algebras · Mathematics 2025-09-12 Aldo Garcia Guinto

We present an implementation of the Atiyah-Bott residue formula for $\overline{M}_{0,m}(\mathbb{P}^{n},d)$. We use this implementation to compute a large number of Gromov-Witten invariants of genus $0$, including intersection numbers of…

Algebraic Geometry · Mathematics 2022-02-15 Giosuè Muratore , Csaba Schneider

Let A denote the algebraic closure of the rationals Q in the complex numbers C. Suppose G is a torsion-free group which contains a congruence subgroup as a normal subgroup of finite index and denote by U(G) the C-algebra of closed densely…

Rings and Algebras · Mathematics 2007-05-23 Daniel R. Farkas , Peter A. Linnell

The aim of this paper is twofold. The first is to give a quantitative version of Schmidt's subspace theorem for arbitrary families of higher degree polynomials. The second is to give a generalization of the subspace theorem for arbitrary…

Number Theory · Mathematics 2023-08-01 Si Duc Quang

We give an algorithm for computing the irreducible admissible representations of a real reductive group with regular integral infinitesimal character. This algorithm has been implemented on a computer, as part of the Atlas of Lie Groups and…

Representation Theory · Mathematics 2008-07-22 Jeffrey Adams , Fokko du Cloux

We give a general proof of Shahidi's tempered L-function conjecture, which has previously been known in all but one case. One of the consequences is the standard modules conjecture for p-adic groups, which means that the Langlands quotient…

Number Theory · Mathematics 2009-11-12 Volker Heiermann , Eric Opdam
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