A Perturbative Multiplicity Theorem for the Borsuk-Ulam Setting
General Mathematics
2025-07-24 v1
Abstract
We prove a generalization of the classical Borsuk--Ulam Theorem under small perturbations (shaking) of the sphere. We show that for a generic perturbation of a continuous map , the number of points such that becomes finite and odd, and may exceed the classical lower bound of one antipodal coincidence. In particular, we show the existence of maps with 3, 5, or 7 such points, and explain the unbounded nature of this multiplicity under higher complexity of the perturbation.
Cite
@article{arxiv.2507.11556,
title = {A Perturbative Multiplicity Theorem for the Borsuk-Ulam Setting},
author = {Karim Mansour},
journal= {arXiv preprint arXiv:2507.11556},
year = {2025}
}