Visit of Professor Leonid Berlyand

January – February 2023- Professor Leonid Berlyand was hosted by Etienne Sandier (LAMA/UPEC) for one month to collaborate with him on a joint scientific research.

The focus of this visit was the rigorous analysis of recently developed free-boundary partial differential equation (PDE) models of active gels (gels in a non-equilibrium state). These models are governed by nonlinear PDEs, for which fundamental questions are unanswered, as the  existence and stability of stationary states, traveling waves, and rotating solutions