François Laviolette died at Christmas, 2021. I testify how working with him was fantastic, as well as benefiting from his friendship and confidence. RIP François. A way to perpetret your scientific lessons, I add here two talks with François which I deeply enjoyed. He was such a good teacher and a sparkling researcher.
![](https://pageperso.lis-lab.fr/cecile.capponi/wp-content/uploads/Capture-decran-de-2022-09-28-14-27-02.png)
![](https://pageperso.lis-lab.fr/cecile.capponi/wp-content/uploads/Capture-decran-de-2022-09-28-14-39-15.png)