Comptes Rendus

Table of contents

Editorial Board
p. CO2
Number Theory/Mathematical Analysis
New results on expanders

Presented by: Jean Bourgain

Jean Bourgain; Alex Gamburd
p. 717-721
Algebra/Homological Algebra
A criterion for regularity of local rings

Presented by: Jean-Pierre Serre

Tom Bridgeland; Srikanth Iyengar
p. 723-726
Théorie des groupes
Invariants relatifs : une algèbre extérieure
[Relative invariants: an exterior algebra]

Presented by: Michel Duflo

Vincent Beck
p. 727-732
Group Theory
A remark on the fundamental lemma of Jacquet

Presented by: Hervé Jacquet

Omer Offen
p. 733-736
Mathematical Analysis
The Birkhoff decomposition in groups of formal diffeomorphisms

Presented by: Alain Connes

Frédéric Menous
p. 737-740
Complex Analysis
A new approach to Cullen-regular functions of a quaternionic variable

Presented by: Jean-Pierre Demailly

Graziano Gentili; Daniele C. Struppa
p. 741-744
Partial Differential Equations
Critical space for the parabolic-parabolic Keller–Segel model in Rd

Presented by: Philippe G. Ciarlet

Lucilla Corrias; Benoît Perthame
p. 745-750
Algebraic Geometry/Topology
Motives and modules over motivic cohomology

Presented by: Pierre Deligne

Oliver Röndigs; Paul Arne Østvær
p. 751-754
Géométrie différentielle
Inégalités de Harnack pour les opérateurs elliptiques d'ordre 2 et 4 et phénomène de concentration
[Harnack inequalities for elliptic operators of order 2 and 4, and concentration phenomena]

Presented by: Thierry Aubin

Samy Skander Bahoura
p. 755-758
Topologie/Géométrie différentielle
Obstruction à la transversalité de lagrangiens
[Obstruction to Lagrangian transversality]

Presented by: Étienne Ghys

Max Karoubi; Maria Luiza Lapa de Souza
p. 759-762
Dynamical Systems
A remark on conservative diffeomorphisms

Presented by: Étienne Ghys

Jairo Bochi; Bassam R. Fayad; Enrique Pujals
p. 763-766
Probabilités
Moyennes empiriques pour les mosaïques de Voronoi du disque de Poincaré
[Empirical means for the Voronoi tessellations of the Poincaré disk]

Presented by: Jean-Pierre Kahane

Fabien Lips
p. 767-772
Probability Theory/Optimal Control
Dual representation as stochastic differential games of backward stochastic differential equations and dynamic evaluations

Presented by: Jean-Michel Bony

Shanjian Tang
p. 773-778
Numerical Analysis
A hyperbolic three-phase flow model

Presented by: Olivier Pironneau

Jean-Marc Hérard
p. 779-784
Mathematical Problems in Mechanics
New formulations of linearized elasticity problems, based on extensions of Donati's theorem
p. 785-789
Mathematical Problems in Mechanics
Comparison of two approaches for the discretization of elastodynamic contact problems

Presented by: Philippe G. Ciarlet

Houari Boumediène Khenous; Patrick Laborde; Yves Renard
p. 791-796
Théorie des signaux/Automatique théorique
Analyse non standard du bruit
[Noise: a nonstandard analysis]

Presented by: Yves Meyer

Michel Fliess
p. 797-802
Editorial Board
p. CO3