Category Archives: Uncategorized

Notes of Alireza Salehi Golsefidy’s Oxford lecture 23-03-2017

Super-approximation 1. Definition Say a finitely generated subgroup of (with fixed generating set ) has super-approximation with respect to a set of positive integers which are coprime to if the family of Cayley graphs is an expander. Here, Example. When … Continue reading

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Pansu’s Lille slides

Slides of Pansu’s 2 lectures on Lp cohomology and large scale conformal maps. lille_15oct14_beamer

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Pierre Pansu’s slides on Differential Forms and the Hölder Equivalence Problem

Here is the completed set of slides CIRMsep14_beamer If you want to know more about the construction of horizontal submanifolds and how Gromov uses it to bound Hausdorff dimensions from below, see Pansu’s Trento notes (2005).

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Pansu’s slides, september 1-5, 2014

Here are Pansu’s slides (version sept. 3rd, 00:13) CIRMsep14_beamer

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Notes de la conférence de Jean-Pierre Kahane aux étudiants de la licence d’Orsay

Notes d’une conférence prononcée par Jean-Pierre Kahane pour la remise des diplômes de licence mention mathématiques à Orsay, le 26 novembre 2012. Qu’est ce que Fourier peut nous dire aujourd’hui ? La semaine dernière, à l’IHP, on célébrait Poincaré. De … Continue reading

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Notes of Yves Cornulier’s lecture

Dehn functions of Lie groups joint with Romain Tessera Sample application to finitely generated groups: The Dehn function of a polycyclic group is either exponential or at most polynomial. 1. Basic facts Dehn function makes sense for compactly presented locally … Continue reading

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Slides of Mauricio Godoy’s talk

Mauricio Godoy spoke on SubRiemannian structures on odd dimensional spheres on march28th, 2012. Here are his slides: Godoy_IHP2012 (unfortunately, I missed his talk).

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