Abstract Results of multi-party bargaining are usually described by concepts from cooperative game theory, in particular by the core. In one-on-one matching, core allocations are stable in the sense that no pair of unmatched or otherwise matched players can improve their incomes by forming a...

In German mobile phone contracts, calls in the provider's home net are usually less expensive than external calls (to the network of a competitor). Thus customers have to compare vectors of prices, and such a comparison can be the source of a fallacy in the presence of network externalities....