Stable Multicommodity Flows

Stable Multicommodity Flows

We extend the stable flow model of Fleiner to multicommodity flows. In addition to the preference lists of agents on trading partners for each commodity, every trading pair has a preference list on the commodities that the seller can sell to the buyer. A blocking walk (with respect to a certain comm...

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Bibliographic Details
Main Authors: Tamás Király, Júlia Pap
Format: Article
Language:English
Published: MDPI AG 2013-03-01
Series:Algorithms
Subjects:
stable matching problem
stable flows
multicommodity flows
PPAD-completeness
Sperner’s Lemma
Online Access:http://www.mdpi.com/1999-4893/6/1/161
Description
Summary:We extend the stable flow model of Fleiner to multicommodity flows. In addition to the preference lists of agents on trading partners for each commodity, every trading pair has a preference list on the commodities that the seller can sell to the buyer. A blocking walk (with respect to a certain commodity) may include saturated arcs, provided that a positive amount of less preferred commodity is traded along the arc. We prove that a stable multicommodity flow always exists, although it is PPAD-hard to find one.
ISSN:1999-4893

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