There are two parts in our note. The first highlights Leo's contribution that earned him the Nobel prize in economics, from a personal point of view. The second discusses further questions that can naturally be addressed using Leo's conceptual framework

This paper offers a resolution to an extensively studied question in theoretical economics: which measure spaces are suitable for modeling many economic agents? We propose the condition of “nowhere equivalence” to characterize those measure spaces that can be effectively used to model the...

Koray & Yildiz (2018) introduces a new framework for implementation in which the main tool to design is the rights structure introduced by Sertel (2001). It was assumed that there is only one stage to obtain the equilibrium outcome of a rights structure. We formulate implementation via two-stage...