Special Session 56: Local and nonlocal diffusion in mathematical biology

Stability of solutions of the porous medium equation with growth with respect to the diffusion exponent

Piotr Gwiazda
University of Warsaw
Poland
Co-Author(s):    
Abstract:
We consider a macroscopic model for the growth of living tissues incorporating pressure-driven dispersal and pressure-modulated proliferation. Assuming a power-law relation between the mechanical pressure and the cell density, the model can be expressed as the porous medium equation with a growth term. We prove Lipschitz continuous dependence of the solutions of the model on the diffusion exponent. The main difficulty lies in the degeneracy of the porous medium equations at vacuum.