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Article . 1987 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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Article . 1987
Data sources: zbMATH Open
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Fixed points of products and the strong fixed point property

Authors: Duffus, Dwight; Sauer, Norbert;

Fixed points of products and the strong fixed point property

Abstract

The paper is motivated by the well known open problem: If ordered sets X and Y both have the fixed point property (fpp), will their product XY also have the fixed point property? The authors introduce what they call the strong fixed point property: An ordered set X has the strong fixed point property if there is an order preserving map \(\Phi\) of \(X^ X\) to X such that \(\Phi\) (f) is a fixed point of f for all \(f\in X^ X\). Such a map \(\Phi\) is also called a selection map for X. Examples of four classes of ordered sets with the strong fixed point property are given, and questions are raised about the extent of the strong fixed point property within the collection of ordered sets with the fixed point property. Question: Does the fixed point property imply the strong fixed point property in general? In the case of finite ordered sets? What is the relation between the strong fixed point property and the relational fixed point property (every order preserving multifunction has a fixed point)? Is there an example of a finite ordered set with the fpp that is not dismantlable? Some results: Let X and Y be ordered sets with the fixed point property. If at least one of X and Y has the strong fixed point property, then XY has the fpp. If both X and Y have the strong fixed point property, then XY has the strong fixed point property.

Related Organizations
Keywords

Partial orders, general, product, order preserving map, fixed point property

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
16
Average
Top 10%
Average
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