Professor, Faculty of Economics, Keio University
Mathematical Economics and Economic Dynamics
B.A.(Economics), Keio University, March, 1986
Ph.D.(Economics), University of Wisconsin, August, 1992
Assistant Professor, University of Western Ontario, Canada, 1993-1996
Associate Professor, Tohoku University, 1996-2005
Professor, Keio University, 2005-
"Dynamic Programming for Non-additive Stochastic Objectives," Journal of Mathematical Economics 25 (1996), 391-442 (with Peter A. Streufert).
"Solutions for Some Dynamic Problems with Uncertainty Aversion," The Japanese Economic Review 52 (2001), 251-283 (with Peter A. Streufert).
"Dynamic Programming with Upper Semi-continuous Stochastic Aggregator," Advances in Mathematical Economics 4 (2002), 25-39.
"Search and Knightian Uncertainty," Journal of Economic Theory 119 (2004), 299-333 (with Kiyohiko G. Nishimura).
"An Axiomatic Approach to ƒÃ-contamination," Economic Theory 27 (2006), 333-340 (with Kiyohiko G. Nishimura).
"Irreversible Investment and Knightian Uncertainty," Journal of Economic Theory 136 (2007), 668-694 (with Kiyohiko G. Nishimura).
"Conditional Implicit Mean and the Law of Iterated Integrals," Journal of Mathematical Economics 45 (2009), 1-15.
"Monetary equilibria and Knightian uncertainty," Economic Theory 59 (2015), 435-459 (with Eisei Ohtaki).
"Public goods game with ambiguous threshold," Economics Letters 191 (2020), 109165 (with Daiki Kishishita).
Other PublicationsEconomics of Pessimism and Optimism: Theory of Knightian Uncertainty and Its Applications, Springer, Japan (2017) (with Kiyohiko G. Nishimura. Won the 61st Nikkei Prize for Excellent Books in Economic Science 2018).
Unpublished Papers
"Search and Knightian Uncertainty Revisited: Roles of Optimism and Pessimism," June 2023 (with Kishishita Daiki, Kiyohiko G. Nishimura), presented at SDM@HKU, 2023. PDF
"Subjective and Objective Probabilities in Representation of Preferences under Uncertainty," June 2023 (with Satoshi Nakada), presented at RUD 2023. PDF
"Sequential ƒÃ-Contamination with Bayesian Updating and Its Application to Job Search," Oct. 2021 (with Hiroyuki Kato, Kiyohiko G. Nishimura). PDF
"Multi-belief rational-expectations equilibira: indeterminacy, complexity and sustained deflation," Aug. 2014 (with Kiyohiko G. Nishimura). PDF
"Subjective error measure," May 2013. PDF
"Learning may increase perceived uncertainty: A model of confidence erosion under Knightian uncertainty," May 2008 (with Kiyohiko G. Nishimura). PDF
Lecture notes (in Japanese) for my classes are available in pdf files.
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