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> USHIO Yoshiaki
（Last updated : 2026-02-24 10:31:16）
USHIO Yoshiaki
Department / Course
Tokyo Keizai University Economics
Job
Professor
Achievement
Business career
Reseach Areas
Book and thesis
Business career
1997/04/01 ～ 2026/03/31
Professor Tokyo Keizai University Economics
Reseach Areas
Others
Book and thesis
2021/02
Papers
"Critical Discount Factors for Maximal Collusion in Cournot Oligopoly Supergames" The Journal of Tokyo Keizai University (No.309),pp.pp.65-74. (Sole-authored)