The Folk Rule for Minimum Cost Spanning Tree Problems with Multiple Sources
- Issue Date
- World Scientific Publishing Co
- International Game Theory Review, Vol.24 No.01, p. 2150007
- In this paper, we introduce minimum cost spanning tree problems with multiple sources. This new setting is an extension of the classical model where there is a single source. We extend several definitions of the folk rule, the most prominent rule in the classical model, to this new context: first as the Shapley value of the irreducible game; second as an obligation rule; third as a partition rule and finally through a cone-wise decomposition. We prove that all the definitions provide the same cost allocation and present two axiomatic characterizations.
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