**1** 2D-CFT's.
The blossoming of the 80's(.pdf), talk given at Saclay, Dec. 2018

**2** ADE and all that(.pdf), talk given at Harvard, Oct. 2018

**3** Horn's problem,
from classical to quantum(.pdf), talk given at Amsterdam and LPTHE, Sept.-Oct. 2017

**4** Counting Doodles, an hommage to Claude Itzykson(.pdf), talk given at the 20th Itzykson Conference, Saclay, June 10th, 2015

**5** Invariances in Physics and Group Theory(.pdf), talk given at the conference "Lie and Klein; the Erlangen program and its impact on mathematics and physics", Strasbourg, Sept. 2012

**6** ``Angular'' matrix integrals (.pdf), an avatar of lectures given at Rutgers, Orsay, Stockholm, Montreal

**7** Introduction to random matrices (.pdf)

**8** Logarithmic minimal models and their integrable
realization (.pdf)