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Mathematics > Analysis of PDEs
Title: Stability of solutions of the porous medium equation with growth with respect to the diffusion exponent
(Submitted on 28 Mar 2024)
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 H\"older 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. To deal with this issue, we first regularise the equation by shifting the initial data away from zero and then optimise the stability estimate derived in the regular setting.
Submission history
From: Zuzanna Szymańska Ph.D. [view email][v1] Thu, 28 Mar 2024 00:20:17 GMT (16kb)
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