A new complete proof of the random Brouwer fixed point theorem and its implied consequences of unification

Fuente: arXiv
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Main Authors: Tu, Qiang, Mu, Xiaohuan, Guo, Tiexin, Chen, Goong
Format: Preprint
Published: 2025
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author Tu, Qiang
Mu, Xiaohuan
Guo, Tiexin
Chen, Goong
author_facet Tu, Qiang
Mu, Xiaohuan
Guo, Tiexin
Chen, Goong
contents We first establish a general random Sperner lemma by presenting a completely new approach for the theory of $L^{0}$-simplicial subdivisions of $L^{0}$-simplexes. Based on this, we are able to achieve a new complete proof of the random Brouwer fixed theorem in random Euclidean spaces, which can provide a solid foundation for various contemporary applications of interest. Afterward, we unify the works currently available and closely related to the random Brouwer fixed theorem: we first prove that the stochastic Brouwer fixed point theorem occurring elsewhere in stochastic analysis is equivalent to a special case of our random Brouwer fixed theorem, and then prove a general random Borsuk theorem and its equivalence with the random Brouwer fixed theorem. Finally, we conclude this paper with commentaries on recent state of study of the famous Schauder conjecture.
format Preprint
id arxiv_https___arxiv_org_abs_2507_08521
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle A new complete proof of the random Brouwer fixed point theorem and its implied consequences of unification
Tu, Qiang
Mu, Xiaohuan
Guo, Tiexin
Chen, Goong
Functional Analysis
46H25, 47H10, 46A50, 60H25
We first establish a general random Sperner lemma by presenting a completely new approach for the theory of $L^{0}$-simplicial subdivisions of $L^{0}$-simplexes. Based on this, we are able to achieve a new complete proof of the random Brouwer fixed theorem in random Euclidean spaces, which can provide a solid foundation for various contemporary applications of interest. Afterward, we unify the works currently available and closely related to the random Brouwer fixed theorem: we first prove that the stochastic Brouwer fixed point theorem occurring elsewhere in stochastic analysis is equivalent to a special case of our random Brouwer fixed theorem, and then prove a general random Borsuk theorem and its equivalence with the random Brouwer fixed theorem. Finally, we conclude this paper with commentaries on recent state of study of the famous Schauder conjecture.
title A new complete proof of the random Brouwer fixed point theorem and its implied consequences of unification
topic Functional Analysis
46H25, 47H10, 46A50, 60H25
url https://arxiv.org/abs/2507.08521