演講者簡介 : Yi-Chun Chen received his Ph.D. in Economics from Northwestern University in 2009. He is currently serving as Assistant Professor of Economics at National University of Singapore. His research field is in microeconomics theory, game theory, mathematical economics and information economics.
演講摘要 : We extend Morris’s (JET 69 (1996) 1-23) main result to the belief operator derived from regular preferences due to Epstein and Wang (Econometrica 64 (1996) 1343-1373). Specifically, we show that in infinite state spaces with regular preferences, the belief operator elicited from preferences is “normal”－.i.e. the belief operator can be generated by some information correspondence in the standard semantic model. As an application, we formulate and show a general impossibility result of speculative trade in infinite state spaces. Our approach is applicable to the “probabilistic” notion of belief.
