We obtain semiparametric efficiency bounds for estimation of a location parameter in a time series model where the innovations are stationary and ergodic conditionally symmetric marginale differences but otherwise prossess general depence and distributions of unknown from. We then describe an...

We address the problem of allocating indivisible goods and some amount of an infinitely divisible good among agents with equal rights on these resources. Our specific objective is to investigate the implications of the following requirement on allocation rules : when the preferences of some of...