Geodesic

Tome 197 (2006) no. 1

Sommaire

On commutativity of connected groups
p. 1-21
Poincar\'e biextension and id\`eles on an algebraic curve
p. 23-36
Geometry of operator cross ratio
p. 37-51
Asymptotic behaviour of a special solution of Abel's equation relating to a cusp catastrophe
p. 53-67
Kolmogorov and trigonometric widths of the Besov classes $B^r_{p,\theta}$ of multivariate periodic functions
p. 69-93
Embedding lattice actions in flows with multidimensional time
p. 95-126
On the rationality of non-singular threefolds with a pencil of Del~Pezzo surfaces of degree~4
p. 127-137