English

On measure-preserving selection of solutions of ODEs

Analysis of PDEs 2025-07-28 v1 Classical Analysis and ODEs

Abstract

For every kNk \in \mathbb{N} and α(0,1)\alpha \in (0,1) we construct a divergence-free uCk([0,T],Cα(Td,Rd))u \in C^k([0,T],C^\alpha(\mathbb{T}^d,\mathbb{R}^d)), d2d \geq 2, such that there is no measurable selection of solutions of the ODE X˙t=u(t,Xt)\dot{X}_t = u(t,X_t) that preserves the Lebesgue measure.

Keywords

Cite

@article{arxiv.2311.15661,
  title  = {On measure-preserving selection of solutions of ODEs},
  author = {Umberto Pappalettera},
  journal= {arXiv preprint arXiv:2311.15661},
  year   = {2025}
}

Comments

12 pages. Comments welcome!