Entropies for radially symmetric higher-order nonlinear diffusion equations

Mario Bukalt, Ansgar Jüngel, Daniel Matthes

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A previously developed algebraic approach to proving entropy production inequalities is extended to deal with radially symmetric solutions for a class of higher-order diffusion equations in multiple space dimensions. In application of the method, novel a priori estimates are derived for the thin-film equation, the fourth-order Derrida-Lebowitz-Speer-Spohn equation, and a sixth-order quantum diffusion equation.

Original languageEnglish
Pages (from-to)353-382
Number of pages30
JournalCommunications in Mathematical Sciences
Volume9
Issue number2
DOIs
StatePublished - Jun 2011
Externally publishedYes

Keywords

  • Higher-order diffusion equations
  • Polynomial decision problem
  • Quantifier elimination
  • Quantum diffusion model
  • Thin-film equation

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