English

Nowhere monotone Riemann integrable derivative without local extrema

Classical Analysis and ODEs 2025-09-16 v2 Functional Analysis

Abstract

We construct a nowhere monotone Riemann integrable derivative which has no local extrema. We also construct a differentiable function GG such that GG' is Riemann integrable and has an isolated local extrema which is not an inflection point of GG.

Cite

@article{arxiv.2505.10659,
  title  = {Nowhere monotone Riemann integrable derivative without local extrema},
  author = {Nikolay A. Gusev and Andrey E. Komagorov},
  journal= {arXiv preprint arXiv:2505.10659},
  year   = {2025}
}

Comments

12 pages, 2 figures (in Russian)

R2 v1 2026-06-28T23:35:01.786Z