Sommaire du Fascicule no. 1

On geodesics of phyllotaxis
p. 3-30
De beaux groupes
p. 29-41
On malnormal peripheral subgroups of the fundamental group of a 3-manifold
p. 41-68
Malnormal subgroups and Frobenius groups: basics and examples
p. 65-77
Ergodic Dilation of a Quantum Dynamical System
p. 77-93