The twenty-nine papers selected for this volume cover topics in cooperative and noncooperative games, social choice and welfare, bargaining, matchings, auctions, mechanism design, general equilibrium, general equilibrium with finance, industrial organization, macroeconomics, and experimental...

We study stable school formation among four students that differ in ability and income. In the presence of ability complementarities and school costs to be shared, we identify the conditions under which a stable allocation is efficient, inefficient, nonexistent, and tell who become peers.

A set of n objects and an amount M of money is to be distributed among m people. Example: the objects are tasks and the money is compensation from a fixed budget. An elementary argument via constrained optimization shows that for M sufficiently large the set of efficient, envy free allocations...