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# Documents  14D24 | enregistrements trouvés : 10

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## Geometric Langlands correspondence and topological field theory - Part 1 Ben-Zvi, David | CIRM H

Post-edited

Research talks;Algebraic and Complex Geometry;Mathematical Physics

Kapustin and Witten introduced a powerful perspective on the geometric Langlands correspondence as an aspect of electric-magnetic duality in four dimensional gauge theory. While the familiar (de Rham) correspondence is best seen as a statement in conformal field theory, much of the structure can be seen in the simpler (Betti) setting of topological field theory using Lurie's proof of the Cobordism Hypothesis. In these lectures I will explain this perspective and illustrate its applications to representation theory following joint work with Nadler as well as Brochier, Gunningham, Jordan and Preygel. Kapustin and Witten introduced a powerful perspective on the geometric Langlands correspondence as an aspect of electric-magnetic duality in four dimensional gauge theory. While the familiar (de Rham) correspondence is best seen as a statement in conformal field theory, much of the structure can be seen in the simpler (Betti) setting of topological field theory using Lurie's proof of the Cobordism Hypothesis. In these lectures I will explain ...

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## Geometry of moduli spaces and representation theory.Lecture notes from the 2015 IAS/Park City mathematics institute (PCMI) graduate summer school.Park City # June 28 - July 18, 2015 Bezrukavnikov, Roman ; Braverman, Alexander ; Yun, Zhiwei | American Mathematical Society;Institute for Advanced Study 2017

Congrès

- x; 436 p.
ISBN 978-1-4704-3574-5

IAS/Park city mathematics series , 0024

Localisation : Collection 1er étage

géométrie algébrique # variété algébrique # espace de modules # théorie de la représentation # cohomologie # K-théorie # dualité de Langlands

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## Séminaire Bourbaki. Volume 2015/2016: exposés 1104-1119 | Société Mathématique de France 2017

Congrès

- xi; 533 p.
ISBN 978-2-85629-855-8

Astérisque , 0390

Localisation : Périodique 1er étage

combinatoire # propriété d'indépendance en théorie des modèles # entropie sofique # résolution de systèmes linéaires sous-déterminés # flot binormal # équation de Schrödinger # conjecture de Hilbert-Smith en géométrie différentielle # géométrie sous-riemannienne # équation de Monge-Ampère en géométrie algébrique complexe # motif # période # problème de modules formels # programme de Langlands géométrique # théorie analytique des nombres # théorie de Hodge du théorème de décomposition # théorie spectrale combinatoire # propriété d'indépendance en théorie des modèles # entropie sofique # résolution de systèmes linéaires sous-déterminés # flot binormal # équation de Schrödinger # conjecture de Hilbert-Smith en géométrie différentielle # géométrie sous-riemannienne # équation de Monge-Ampère en géométrie algébrique complexe # motif # période # problème de modules formels # programme de Langlands géométrique # théorie analytique des nombres # ...

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## String-math 2016Paris # June 27 - July 2, 2016 Kashani-Poor, Amir-Kian ; Minasian, Ruben ; Nekrasov, Nikita ; Pioline, Boris | American Mathematical Society 2018

Congrès

- xvi; 294 p.
ISBN 978-1-4704-3515-8

Proceedings of symposia in pure mathematics , 0098

Localisation : Collection 1er étage

géométrie algébrique # théorie quantique # programme de Langlands # espace fibré vectoriel # fibration # espace modulaire # symétrie miroir # analyse globale # application harmonique # théorie des champs # théorie des cordes

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## Basics on affine Grassmanianns Richarz, Timo | CIRM H

Multi angle

Research schools;Algebraic and Complex Geometry;Number Theory

The aim is to give an introduction to the basic theory of affine Grassmannians and affine flag varieties. We put special emphasis on the utility of dynamic methods in sense of Drinfeld [D], and the utility of non-constant group schemes. We plan to adress the following aspects:
• Affine Grassmannians as moduli spaces of G-bundles, and as quotients of loop groups ;
• Cell decompositions of affine Grassmannians and affine flag varieties via dynamic methods: Iwahori, Cartan and Iwasawa decompositions ;
• Schubert varieties, Demazure resolutions, Convolution morphisms, Combinatorial structures ;
• Moduli spaces of G-bundles with level structure versus bundles under non-constant group schemes ;
• Beilinson-Drinfeld type deformations of affine Grassmannians ;
• Relation to the local geometry of moduli spaces of Drinfeld shtukas and Shimura varieties.
The aim is to give an introduction to the basic theory of affine Grassmannians and affine flag varieties. We put special emphasis on the utility of dynamic methods in sense of Drinfeld [D], and the utility of non-constant group schemes. We plan to adress the following aspects:
• Affine Grassmannians as moduli spaces of G-bundles, and as quotients of loop groups ;
• Cell decompositions of affine Grassmannians and affine flag varieties via dynamic ...

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## Betti Langlands in genus one Nadler, David | CIRM H

Multi angle

Research talks;Algebra;Algebraic and Complex Geometry

We will report on an ongoing project to understand geometric Langlands in genus one, in particular a version that depends only on the topology of the curve (as appears in physical descriptions of the subject). The emphasis will be on the realization of the automorphic and spectral categories as the center/cocenter of the affine Hecke category. We will mention work with D. Ben-Zvi and A. Preygel that accomplishes this on the spectral side, then focus on ongoing work with D. Ben-Zvi, building on work with P. Li, that we expect will lead to a parallel automorphic result. We will report on an ongoing project to understand geometric Langlands in genus one, in particular a version that depends only on the topology of the curve (as appears in physical descriptions of the subject). The emphasis will be on the realization of the automorphic and spectral categories as the center/cocenter of the affine Hecke category. We will mention work with D. Ben-Zvi and A. Preygel that accomplishes this on the spectral side, then ...

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## Geometric Langlands correspondence and topological field theory - Part 2 Ben-Zvi, David | CIRM H

Multi angle

Research talks;Algebraic and Complex Geometry;Mathematical Physics

Kapustin and Witten introduced a powerful perspective on the geometric Langlands correspondence as an aspect of electric-magnetic duality in four dimensional gauge theory. While the familiar (de Rham) correspondence is best seen as a statement in conformal field theory, much of the structure can be seen in the simpler (Betti) setting of topological field theory using Lurie's proof of the Cobordism Hypothesis. In these lectures I will explain this perspective and illustrate its applications to representation theory following joint work with Nadler as well as Brochier, Gunningham, Jordan and Preygel. Kapustin and Witten introduced a powerful perspective on the geometric Langlands correspondence as an aspect of electric-magnetic duality in four dimensional gauge theory. While the familiar (de Rham) correspondence is best seen as a statement in conformal field theory, much of the structure can be seen in the simpler (Betti) setting of topological field theory using Lurie's proof of the Cobordism Hypothesis. In these lectures I will explain ...

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## The coherent Satake category Williams, Harold | CIRM H

Multi angle

Research talks;Algebraic and Complex Geometry;Mathematical Physics

The geometric Satake equivalence identifies the Satake category of a reductive group $G$ - that is, the category of equivariant perverse sheaves on the affine Grassmannian $G_{rG}$ - with the representation category of its Langlands dual group $G^∨$. While the Satake category is topological in nature, it has a poorly understood algebro-geometric cousin: the category of perverse coherent sheaves on $G_{rG}$. This category is not semi-simple and its monoidal product is not symmetric. We show however that it is rigid and admits renormalized r-matrices similar to those appearing in the theory of quantum loop or KLR algebras. Applying the framework developed by Kang-Kashiwara-Kim-Oh in their proof of the dual canonical basis conjecture, we use these results to show that the coherent Satake category of $GL_n$ is a monoidal cluster categorification in the sense of Hernandez-Leclerc. This clarifies the physical meaning of the coherent Satake category: simple perverse coherent sheaves correspond to Wilson-’t Hooft operators in $\mathcal{N} = 2$ gauge theory, just as simple perverse sheaves correspond to ’t Hooft operators in $\mathcal{N} = 4$ gauge theory following the work of Kapustin-Witten. Our results also explain the appearance of identical quivers in the work of Kedem-Di Francesco on $Q$-systems and in the context of BPS quivers. More generally, our construction of renormalized r-matrices works in any chiral $E_1$-category, providing a new way of understanding the ubiquity of cluster algebras in $\mathcal{N} = 2$ field theory: the existence of renormalized r-matrices, hence of iterated cluster mutation, is a formal feature of such theories after passing to their holomorphic-topological twists. This is joint work with Sabin Cautis (arXiv:1801.08111). The geometric Satake equivalence identifies the Satake category of a reductive group $G$ - that is, the category of equivariant perverse sheaves on the affine Grassmannian $G_{rG}$ - with the representation category of its Langlands dual group $G^∨$. While the Satake category is topological in nature, it has a poorly understood algebro-geometric cousin: the category of perverse coherent sheaves on $G_{rG}$. This category is not semi-simple and ...

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## De la géométrie algébrique aux formes automorphes (I):une collection d'articles en l'honneur du soixantième anniversaire de Gérard Laumon Bost, Jean-Benoît ; Boyer, Pascal ; Genestier, Alain ; Lafforgue, Laurent ; Lysenko, Sergey ; Morel, Sophie ; Ngô, Bao Châu | Société Mathématique de France 2015

Ouvrage

- xv; 374 p.
ISBN 978-2-85629-805-3

Astérisque , 0369

Localisation : Périodique 1er étage

algèbre de Hecke catégorique # caractères locaux # catégories infinitaires # centre de Bernstein # cohomologie automorphe # cohomologie étale # conjecture de Langlands locale # corps locaux # courbe sur Fq # distributions # espace de modules des fibrés de Hitchin # faisceau constructible # faisceau l-adique # familles propres automorphes # fibration de Hitchin # fibrés de Hitchin # forme automorphe # formule des traces d'Arthur-Selberg # formules de points fixes # front d'onde # géométrie rigide # groupe de Langlands global # groupe de Weyl affine # groupe fondamental # groupe unitaire # groupes p-divisibles # intégrales oscillantes # multiplicités globales # pro-étale # représentation automorphe pour GL(n) # résolution des singularités # site # théorie de Hodge p-adique # transformation de Fourier # variété de Griffiths-Schmid # variété de Picard algèbre de Hecke catégorique # caractères locaux # catégories infinitaires # centre de Bernstein # cohomologie automorphe # cohomologie étale # conjecture de Langlands locale # corps locaux # courbe sur Fq # distributions # espace de modules des fibrés de Hitchin # faisceau constructible # faisceau l-adique # familles propres automorphes # fibration de Hitchin # fibrés de Hitchin # forme automorphe # formule des traces d'Arthur-Selberg # ...

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## Surveys in differential geometry 2014. Vol. XIX : regularity and evolution of nonlinear equations.Essays dedicated to Richard Hamilton, Leon Simon, and Karen Uhlenbeck Cao, Huai-Dong ; Schoen, Richard ; Yau, Shing-Tung | International Press 2015

Ouvrage

- vii; 301 p.
ISBN 978-1-57146-303-6

Surveys in differential geometry , 0019

Localisation : Ouvrage RdC (SURV)

équation d'évolution non linéaire # géométrie différentielle # forme hermitienne # Richard Hamilton # Leon Simon # Karen Uhlenbeck

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