Bitte verwenden Sie diesen Link, um diese Publikation zu zitieren, oder auf sie als Internetquelle zu verweisen: https://hdl.handle.net/10419/148268 
Erscheinungsjahr: 
2016
Schriftenreihe/Nr.: 
IHS Economics Series No. 323
Verlag: 
Institute for Advanced Studies (IHS), Vienna
Zusammenfassung: 
Under full substitutability of preferences, it has been shown that a competitive equilibrium exists in trading networks, and is equivalent (after a restriction to equilibrium trades) to (chain) stable outcomes. In this paper, we formulate the problem of finding an efficient outcome as a generalized submodular flow problem on a suitable network. Equivalence with seemingly weaker notions of stability follows directly from the optimality conditions, in particular the absence of improvement cycles in the flow problem. Our formulation yields strongly polynomial algorithms for finding competitive equilibria in trading networks, and testing (chain) stability.
Schlagwörter: 
Trading Networks
Competitive Equilibrium
Stability
Submodular Flow Problems
Discrete Convexity
Dokumentart: 
Working Paper

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