In the matching with contracts framework, we investigate the population/resource monotonicity and respecting improvements properties of the cumulative offer process (COP). Both population and resource monotonicity conditions are solidarity requirements. The former says that no doctor is to be...

In this paper, we consider a house allocation with existing tenants model in which each transaction is costly for the central authority, a housing office. We compare two widely studied mechanisms, deferred acceptance (DA) and top trading cycles (TTC), based on their costs for the housing...