Matching with Contracts: Comment
指出Hatfield和Milgrom（2005）的合同匹配模型隐含假设了被拒绝合同无关性条件，若缺少该条件，稳定分配的存在性等关键结论不成立。
The matching with contracts model (Hatfield and Milgrom 2005) is widely considered to be one of the most important advances of the last two decades in matching theory. One of their main messages is that the set of stable allocations is non-empty under a substitutes condition. We show that an additional irrelevance of rejected contracts (IRC) condition is implicitly assumed throughout their analysis, and in the absence of IRC several of their results, including the guaranteed existence of a stable allocation, fail to hold.