題 目：An unawareness operator and the standard state-space models
主講人：張企教授(臺(tái)灣清華大學(xué)數(shù)學(xué)系)
時(shí) 間：2013年11月4日（星期一）10：30
地 點(diǎn)：主樓418會(huì)議室
主講人簡(jiǎn)介：
張企1975年畢業(yè)於臺(tái)灣師範(fàn)大學(xué)數(shù)學(xué)系，1985年2月獲得美國(guó)康乃爾大學(xué)應(yīng)用數(shù)學(xué)博士。1985年2月至7月在臺(tái)灣交通大學(xué)應(yīng)用數(shù)學(xué)系工作，1985年8月起轉(zhuǎn)至臺(tái)灣清華大學(xué)數(shù)學(xué)系，主要的研究興趣是合作博奕論、知識(shí)博奕論( epistemic game theory)，近幾年對(duì) “unawareness”這個(gè)課題投入較多時(shí)間。
內(nèi)容簡(jiǎn)介：
Many criteria have been proposed to portray unawareness. To claim a model is able to accommodate unawareness, due to the observation by Dekel, Lipman, and Rustichini(1998 a), it is demanding to require that it should have an operator satisfying all these criteria. The purpose of the paper is to define a notion of unawareness on the standard state-space models which is determined by three essential criteria for the concept: Plausibility, Symmetry, and No positive knowledge proposed by Modica and Rustichini (1994). In fact, U can be defined on non-standard state-space models as well.Moreover, we will discuss whether the notion of unawareness considered is definable in the finitary logic S4.
