For the assignment game, we anlayze the following mechanism: sellers, simultaneously, fix their prices first, then buyers, sequentially, decide which object to buy, if any, among the remaining objects. The first phase of the game determines the potential proces, while the second phase determines...

A labor market where firms and workers are heterogeneous and may form more than one partnership is considered. A natural concept of core for such markets, different from the concept used by Thompson (1977), is defined. We show that the core is non-empty and is, in general, strictly greater than...