bidding stage on the resulting outcomes such as the frequency of grand coalition formation, efficiency, and the distance … the grand coalition. This difference is because those proposers who won the bidding stage in PC-W tend to offer an …

The paper studies when efficient allocations are implementable via coalition-proof mechanisms. When ambiguous … implementable via interim coalition incentive compatible mechanisms if and only if the prior distribution of agents’ types satisfies … the Coalition Beliefs Determine Preferences (CBDP) property. When the CBDP property holds, these mechanisms can be …

In auctions with externalities, it is well-known that the core can be empty, which is undesirable both in terms of …

In auctions with externalities, the core can be empty, which is undesirable both in terms of stability and fairness. We …