The noncommutative Brouwer fixed-point conjecture for compact spaces

Let XX be a compact space of finite covering dimension equipped with a free action of Z/2Z\mathbb{Z}/2\mathbb{Z}. Let ΓX\Gamma X denote the cone on XX.

Noncommutative Brouwer fixed-point conjecture. Every continuous map

f:ΓXΓXf:\Gamma X\longrightarrow\Gamma X

has a fixed point.

This proposes a Brouwer fixed-point theorem for cones over compact spaces with free involutions, without assuming an underlying linear structure. The source presents it as a conjectural extension of the classical Brouwer theorem; no resolution is supplied.

Sources & referencesView supporting material

Primary source

Ludwik Dabrowski, “Towards a noncommutative Brouwer fixed-point theorem”, arXiv:1504.03588 (2015).

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