• Corpus ID: 118634747

# Une généralisation de la conjecture de point fixe de Schauder

@article{Cauty2012UneGD,
title={Une g{\'e}n{\'e}ralisation de la conjecture de point fixe de Schauder},
author={Robert Cauty},
journal={arXiv: Algebraic Topology},
year={2012}
}
• R. Cauty
• Published 12 January 2012
• Mathematics
• arXiv: Algebraic Topology
We prove the following generalisation of Schauder's fixed point conjecture: Let $C_1,...,C_n$ be convex subsets of a Hausdorff topological vector space. Suppose that the $C_i$ are closed in $C=C_1\cup...\cup C_n$. If $f:C\to C$ is a continuous function whose image is contained in a compact subset of $C$, then its Lefschetz number $\Lambda(f)$ is defined. If $\Lambda(f)\ne0$, then $f$ has a fixed point.
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## References

SHOWING 1-7 OF 7 REFERENCES

### RÉTRACTES ABSOLUS DE VOISINAGE ALGÉBRIQUES

We introduce the class of algebraic ANRs. It is defined by replacing continuous maps by chain mappings in Lefschetz’s characterization of ANRs. To a large extent, the theory of algebraic ANRs

### Fixed Point Theory

Formally we have arrived at the middle of the book. So you may need a pause for recovering, a pause which we want to fill up by some fixed point theorems supplementing those which you already met or

### Algebraic Topology

The focus of this paper is a proof of the Nielsen-Schreier Theorem, stating that every subgroup of a free group is free, using tools from algebraic topology.

• 1996