English

Harmonic functions with highly intersecting zero sets

Classical Analysis and ODEs 2024-10-08 v1 Complex Variables

Abstract

We show that the number of isolated zeros of a harmonic map h:R2R2h:\mathbb{R}^2\to \mathbb{R}^2 inside the ball of radius rr can grow arbitrarily fast with rr, while its maximal modulus grows in a controlled manner. This result is an analogue, in the context of harmonic maps, of the celebrated Cornalba-Shiffman counterexamples to the transcendental B\'{e}zout problem.

Keywords

Cite

@article{arxiv.2410.03975,
  title  = {Harmonic functions with highly intersecting zero sets},
  author = {Vukašin Stojisavljević},
  journal= {arXiv preprint arXiv:2410.03975},
  year   = {2024}
}

Comments

9 pages, 1 figure

R2 v1 2026-06-28T19:09:28.742Z