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Economic Strategy Lab (Sekiguchi)
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A research division that uses game theory to study strategic interaction and information exchange between parties who meet repeatedly.
AboutAbout the lab
Unraveling strategy and information through theory.
The Institute of Economic Research at Kyoto University is a center for economics research focused on theoretical economics, applied economics, and econometrics. Its main emphasis is fundamental theoretical research, but it also takes on issues that respond to the needs of the times and policy-oriented issues.
The Economic Strategy Lab includes Professor Tadashi Sekiguchi, whose specialties are game theory, dynamic game theory, and the economics of information, and Professor Jiahui Chen, whose specialties are microeconomics and the economics of information.
Key terms
- Repeated game
- A game model representing a situation in which the same players face the same strategic interaction many times
- Oligopoly
- A state in which a small number of firms account for most of the market
ResearchResearch themes
Using game theory and microeconomic theory, the lab analyzes strategic interaction among people and firms and the role of the information exchanged between them.
*Illustrative imageDynamic Game Theory and Its Applications to Economics
Professor Tadashi Sekiguchi is researching dynamic game theory and its applications to economics, focusing on repeated games in which players can observe each other's actions only imperfectly.
*Illustrative imageEquilibria of Oligopoly Models and Competition Policy
Professor Tadashi Sekiguchi is researching how to explicitly derive equilibria in oligopoly models under a variety of realistic settings, and what these equilibria imply for competition policy.
*Illustrative imageInformation Design on Platforms
Professor Jiahui Chen, as principal investigator, is researching "Information Design on Platforms."
*Illustrative imageCollective Experimentation with Interdependent Technologies
Professor Jiahui Chen, as principal investigator, is researching "Collective Experimentation with Interdependent Technologies."
MembersFaculty
- ProfessorTadashi Sekiguchi
- ProfessorJiahui Chen
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Go” Dietmar Rabich / CC BY-SA 4.0 (cropped)
- Dynamic Game Theory and Its Applications to Economics: “Paris - Playing chess at the Jardins du Luxembourg - 2966” Jorge Royan / CC BY-SA 3.0 (cropped)
- Equilibria of Oligopoly Models and Competition Policy: “Gas price JPY 151 Oct 2025” Chacmool / CC BY-SA 4.0 (cropped)
- Information Design on Platforms: “Mini shopping cart placed on a table next to a laptop in a modern office setting” Shixart1985 / CC BY 2.0 (cropped)
- Collective Experimentation with Interdependent Technologies: “AWB team @ Wikimedia Hackathon 2024” Magioladitis / CC BY-SA 4.0 (cropped)
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（新後閑 禎） ): “Takaosan Mount Takao Tokyo Night Sky )” Yuhei Mukoyama / CC BY-SA 3.0 (cropped) - Related lab (ファイナンス研究部門
（西山 慶彦） ): “TokyoStockExchange1144” Fg2 / Public domain (cropped) - Related lab (経済情報解析研究部門
（宇南山 卓） ): “Shibuya scramble crossing during Halloween 2023, actually less crowded than usual, high police presence 2” Syced / CC0 (cropped)
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