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Documents  Hamenstädt, Ursula | enregistrements trouvés : 4

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- ix; 189 p.
ISBN 978-0-8218-7427-1

Contemporary mathematics , 0590

Localisation : Collection 1er étage

surface de Riemann # fonction

20-XX ; 30-XX ; 31-XX ; 32-XX ; 33-XX ; 42-XX ; 51-XX ; 53-XX ; 57-XX ; 58-XX ; 00B25 ; 30-06 ; 31-06 ; 32-06 ; 33-06 ; 42-06 ; 20-06 ; 53-06 ; 57-06 ; 58-06

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Research talks

Using a very recent result of Calderon and Salter, we relate small type Artin groups defined by Coxeter diagram which are trees to mapping class groups. This gives information on both the Artin groups with respect to commensurability and hyperbolicity of the parabolic subgroup graph as well as information on the mapping class group and its associated geometric spaces, namely generating sets of finite index subgroups and fundamental groups of strata of abelian differentials. I’ll try to highlight the many ways in which this reflects various aspects of Mladen’s work. Using a very recent result of Calderon and Salter, we relate small type Artin groups defined by Coxeter diagram which are trees to mapping class groups. This gives information on both the Artin groups with respect to commensurability and hyperbolicity of the parabolic subgroup graph as well as information on the mapping class group and its associated geometric spaces, namely generating sets of finite index subgroups and fundamental groups of ...

20F65 ; 53C24 ; 57S25

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Resarch talks;Dynamical Systems and Ordinary Differential Equations

We give an algebraic proof of the simplicity of the Lyapunov spectrum for the Teichmüller flow on strata of abelian differentials. This proof extends to the Kontsevich Zorich cocycle over strata of quadratic differentials and can also be used to study the algebraic degree of pseudo-Anosov stretch factors.

37F30 ; 37D35

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- 64 p.

Bonner mathematische schriften , 0180

Localisation : Publication 1er étage

analyse sur des varietes # es pace de dimension infini # geodesique # geometrie differenti elle classique # geometrie differentielle # geometrie differentielle globale # probleme variationnel # variete # variete homogene

53A04 ; 53C21 ; 53C30

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