English

Browder's Theorem through Brouwer's Fixed Point Theorem

General Topology 2021-07-07 v1

Abstract

One of the conclusions of Browder (1960) is a parametric version of Brouwer's Fixed Point Theorem, stating that for every continuous function f:([0,1]×X)Xf : ([0,1] \times X) \to X, where XX is a simplex in a Euclidean space, the set of fixed points of ff, namely, the set {(t,x)[0,1]×X ⁣:f(t,x)=x}\{(t,x) \in [0,1] \times X \colon f(t,x) = x\}, has a connected component whose projection on the first coordinate is [0,1][0,1]. Browder's (1960) proof relies on the theory of the fixed point index. We provide an alternative proof to Browder's result using Brouwer's Fixed Point Theorem.

Keywords

Cite

@article{arxiv.2107.02428,
  title  = {Browder's Theorem through Brouwer's Fixed Point Theorem},
  author = {Eilon Solan and Omri N. Solan},
  journal= {arXiv preprint arXiv:2107.02428},
  year   = {2021}
}
R2 v1 2026-06-24T03:55:19.000Z