English

Singular and regular solutions of a non-linear parabolic system

Analysis of PDEs 2009-11-10 v1

Abstract

We study a dissipative nonlinear equation modelling certain features of the Navier-Stokes equations. We prove that the evolution of radially symmetric compactly supported initial data does not lead to singularities in dimensions n4n\leq 4. For dimensions n>4n>4 we present strong numerical evidence supporting existence of blow-up solutions. Moreover, using the same techniques we numerically confirm a conjecture of Lepin regarding existence of self-similar singular solutions to a semi-linear heat equation.

Keywords

Cite

@article{arxiv.math/0302129,
  title  = {Singular and regular solutions of a non-linear parabolic system},
  author = {Petr Plechac and Vladimir Sverak},
  journal= {arXiv preprint arXiv:math/0302129},
  year   = {2009}
}

Comments

16 pages

R2 v1 2026-07-22T16:51:52.980Z