Documents  37A17 | enregistrements trouvés : 8

- xxi; 185 p.
ISBN 978-2-85629-303-4

Séminaires et congrès , 0019

Localisation : Collection 1er étage

opérateur de transfert # produit de matrices aléatoires stationnaires # spectre de Lyapunov # algorithme de Jacobi-Perron # algorithme des fractions continues multidimensionnelles # approximation diophantienne simultanée # dimension de Hausdorff # espace localement symétrique # flot unipotent # théorème de Ratner # espace homogène p-adique # points de Heegner # billards polygonaux

11Gxx ; 11H16 ; 11H46 ; 11J06 ; 11J13 ; 11J17 ; 11J25 ; 11J70 ; 11J83 ; 11K50 ; 11K55 ; 11K60 ; 22E40 ; 22E46 ; 28A80 ; 30F40 ; 37A15 ; 37A17 ; 37A30 ; 37D50 ; 37H15 ; 53C35

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- ix; 258 p.
ISBN 978-1-4704-0931-9

Contemporary mathematics , 0631

Localisation : Collection 1er étage

système dynamique différentiable # théorie ergodique # théorie des nombres # mesure de probabilité sur des groupes # dynamique de Teichmüller # approximation Diophantienne # fonction itérative # marche aléatoire # système dynamique algébrique # S. G. Dani

22D40 ; 28D20 ; 37A15 ; 37A17 ; 37A20 ; 37A30 ; 37A35 ; 37B05 ; 37E35 ; 60B15 ; 37-06 ; 37Axx ; 00B25

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Research schools;Dynamical Systems and Ordinary Differential Equations;Number Theory

I will discuss approaches to several problems concerning values of linear and quadratic forms using the ergodic theory of group actions on the space of unimodular lattices, and more generally, on homogeneous spaces of semisimple Lie groups.

37A17 ; 11K60 ; 22F30

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Research schools;Dynamical Systems and Ordinary Differential Equations

We will discuss old and recent results on topological and measurable dynamics of diagonal and unipotent flows on frame bundles and unit tangent bundles over hyperbolic manifolds. The first lectures will be a good introduction to the subject for young researchers.

37D40 ; 37A17 ; 37A25

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Research schools;Dynamical Systems and Ordinary Differential Equations;Number Theory

Optimal results on the improvements to Dirichlet's Theorem are obtained in the one-dimensional case. For simultaneous approximation the problem is open. I will describe reduction of the problem to dynamics both in one-dimensional case (via continued fractions) and for higher dimensions (via diagonal flows on the space of lattices). If time allows I'll mention an inhomogeneous version which is easier than the homogeneous one. Joint work with Nick Wadleigh. Optimal results on the improvements to Dirichlet's Theorem are obtained in the one-dimensional case. For simultaneous approximation the problem is open. I will describe reduction of the problem to dynamics both in one-dimensional case (via continued fractions) and for higher dimensions (via diagonal flows on the space of lattices). If time allows I'll mention an inhomogeneous version which is easier than the homogeneous one. Joint work with Nick ...

22F30 ; 11J04 ; 11J70 ; 37A17

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Research talks;Dynamical Systems and Ordinary Differential Equations

We prove a couple of general conditional convergence results on ergodic averages for horocycle and geodesic subgroups of any continuous $SL(2,\mathbb{R})$- action on a locally compact space. These results are motivated by theorems of Eskin, Mirzakhani and Mohammadi on the $SL(2,\mathbb{R})$-action on the moduli space of Abelian differentials. By our argument we can derive from these theorems an improved version of the “weak convergence” of push-forwards of horocycle measures under the geodesic flow and a new short proof of a theorem of Chaika and Eskin on Birkhoff genericity in almost all directions for the Teichmüller geodesic flow. We prove a couple of general conditional convergence results on ergodic averages for horocycle and geodesic subgroups of any continuous $SL(2,\mathbb{R})$- action on a locally compact space. These results are motivated by theorems of Eskin, Mirzakhani and Mohammadi on the $SL(2,\mathbb{R})$-action on the moduli space of Abelian differentials. By our argument we can derive from these theorems an improved version of the “weak convergence” of ...

37D40 ; 37C40 ; 37A17

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- 243 p.
ISBN 978-0-8218-1389-8

Translations of mathematical monographs , 0190

Localisation : Collection 1er étage

théorie des nombres # théorie ergodique # système dynamique # flot # espace homogène # forme quadratique # flot géodésique # courbure négative # groupe de Lie # groupe algébrique # flot unipotent # théorie spectrale # flot horosphérique # rigidité # réseau

11H55 ; 22E40 ; 37A17 ; 37-02 ; 37A45

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