VIENNA JOINT ECONOMICS SEMINAR	INVITATION
The University of Vienna and the Department of Economics and Finance at the Institute for Advanced Studies cordially invite you to the following Vienna Joint Economics Seminar Thursday, March 3, 2015 University of Vienna, Oskar-Morgenstern-Platz 1, 1090 Vienna, HS 15, 2nd floor 4:00 pm Rosemarie Nagel and                 Dov Samet U Pompeu Fabra                                             Tel Aviv U Title tba (Rosemarie Nagel) and The sure-thing principle as originally intended (Dov Samet) Abstract: Savage introduced the sure-thing principle in terms of the dependence of decisions on knowledge, but gave up on formalizing it in epistemic terms for lack of a formal definition of knowledge. Using a standard model of knowledge, the partition model, we examine the sure-thing principle, presenting two ways to capture it. One is in terms of knowledge operators, which we call the principle of follow the knowledgeable; the other is in terms of kens--bodies of agents' knowledge--which we call independence of irrelevant knowledge. We show that the two principles are equivalent. We present a stronger version of the independence of irrelevant knowledge and show that it is equivalent to the impossibility of agreeing to disagree on the decision made by agents, namely the impossibility of different decisions made by agents being common knowledge. We are looking forward to seeing you! Institute for Advanced Studies Department of Economics and Finance Josefstädter Straße 39, 1080 Vienna, Austria Tel.: +43 1 599 91 145 e-Mail: economics@ihs.ac.at http://economics.ihs.ac.at		LINKS DIRECTIONS TO UNIVERSITY OF VIENNA on Google maps VIENNA JOINT ECONOMICS SEMINAR on Google calendar ECONOMICS SEMINARS IN VIENNA on Google calendar
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