Takashi Ui Webpage
- 2012-present, Professor, Hitotsubashi University
- 2005-2012, Professor, Yokohama National University
- 2002-2005, Associate Professor, Yokohama National University
- 1999-2002, Assistant Professor, University of Tsukuba
- 1988-1999, Economist, Bank of Japan
- Ph.D. 1997, Economics, Stanford University
- M.S. 1988, Engineering, The University of Tokyo
- B.S. 1986, Engineering, The University of Tokyo
- Refereed publications
- Working papers
- A Shapley Value Representation of Potential Games, Games and Economic Behavior 31 (2000), 121-135.
- Robust Equilibria of Potential Games, Econometrica 69 (2001), 1373-1380.
- Best Response Equivalence (with Stephen Morris), Games and Economic Behavior 49 (2004), 260-287.
- Generalized Potentials and Robust Sets of Equilibria (with Stephen Morris), Journal of Economic Theory 124 (2005), 45-78.
- Incomplete Information Games with Multiple Priors (with Atsushi Kajii), Japanese Economic Review 56 (2005), 332-351.
- Equivalence of the Dempster-Shafer Rule and the Maximum Likelihood Rule Implies Convexity (with Atsushi Kajii), Economics Bulletin 4-10 (2005), 1-6.
- Agreeable Bets with Multiple Priors (with Atsushi Kajii), Journal of Economic Theory 128 (2006), 299-305.
- Correlated Quantal Responses and Equilibrium Selection, Games and Economic Behavior 57 (2006), 361-369.
- A Note on Discrete Convexity and Local Optimality, Japan Journal of Industrial and Applied Mathematics 23 (2006), 21-29.
- Cominimum Additive Operators (with Atsushi Kajii and Hiroyuki Kojima), Journal of Mathematical Economics 43 (2007), 218-230.
- Discrete Concavity for Potential Games, International Game Theory Review 10 (2008), 137-143.
- Correlated Equilibrium and Concave Games, International Journal of Game Theory 37 (2008), 1-13.
- Interim Efficient Allocations under Uncertainty (with Atsushi Kajii), Journal of Economic Theory 144 (2009), 337-353.
- Coextrema Additive Operators (with Atsushi Kajii and Hiroyuki Kojima), in: S. K. Neogy, A. K. Das and R. B. Bapat, Editors, Modeling, Computation and Optimization, World Scientific (2009), pp. 73-95.
- Bayesian Potentials and Information Structures: Team Decision Problems Revisited, International Journal of Economic Theory 5 (2009), 271-291. This article is available online at Blackwell Synergy (www.blackwell-synergy.com).
- The Ambiguity Premium vs. the Risk Premium under Limited Market Participation, Review of Finance 15 (2011), 245-275.
- The Myerson Value for Complete Coalition Structures (with Atsushi Kajii and Hiroyuki Kojima), Mathematical Methods of Operations Research 74 (2011), 427-443.
- Effects of Symmetry on Globalizing Separated Monopolies to a Nash-Cournot Oligopoly (with Hisao Kameda), International Game Theory Review 14 (2012), DOI: 10.1142/S0219198912500090.
- Radner's Theorem on Teams and Games with a Continuum of Players (with Yasunori Yoshizawa), Economics Bulletin 33-1 (2013), 72-77.
- The Social Value of Public Information with Convex Costs of Information Acquisition, Economics Letters 125 (2014), 249-252.
- Characterizing Social Value of Information (with Yasunori Yoshizawa), forthcoming in Journal of Economic Theory. Online appendix
- Papers in conference proceedings
- Optimal Disclosure of Public Information with Endogenous Acquisition of Private Information, January 2015.
- Welfare Effects of Information Acquisition Costs, October 2013.
- Self-Control Games (with Norio Takeoka), revised October 2014.
- Global Games and Ambiguous Information: An Experimental Study (with Toshiji Kawagoe), revised August 2013.
- Ambiguity and Risk in Global Games, revised April 2015. Slide
- Non-Atomic Potential Games and the Value of Vector Measure Games, revised June 2008.
- Bayesian Nash Equilibrium and Variational Inequalities, November 2004.
- A Note on the Lucas Model: Iterated Expectations and the Neutrality of Money, April 2003. Slide
- Quantal Response Equilibria and Stochastic Best Response Dynamics, revised June 2002.
- Asymmetric Effects of Monetary Policy: Japanese Experiences in the 1990s (with Ryo Kato and Tsutomu Watanabe), 1999.
- Economic Welfare and Competition in Oligopolistic Markets, 1991.
- Expository articles in Japanese
- Japanese translation of this webpage, BETA, by Google
- A.B. Migdal: On the Psychology of Scientific Creativity, Contemporary Physics 20 (1979), 121-148.
Summary in Japanese
"The driving force behind scientific creativity should not be the desire to bring about a scientific revolution; nor should all one's efforts be directed towards achieving success, but one should be motivated by a love of knowledge, a capacity to wonder at and delight in each small success and, above all, a feeling for the beauty of science. It is important to develop impeccable conscientiousness and to learn to reduce the most complex questions to extreme simplicity and clarity; to find a way out of many psychological contradictions; to be guided by intuition but not to put one's trust in it; to be conscious of all the difficulties, but to be able temporarily to divert one's attention from them; to believe in a result but at the same time to search patiently for a way to refute it; to find one's own style of working but to be able to change it with experience and with each new major discovery: in brief one must aim to understand everything."