Motoki Takigiku

Motoki Takigiku is a Japanese mathematician working in algebraic and enumerative combinatorics, partition identities, and combinatorial representation theory. He represented Japan at the International Mathematical Olympiad three times (2007, 2008, 2009), winning silver (2007), bronze (2008), and gold (2009), and also competed at the International Olympiad in Informatics. He studied at the University of Tokyo (B.S. Mathematics 2010-2014, M.S. and Ph.D. in Mathematical Sciences 2014-2019) and has been a postdoctoral researcher at Tokyo Institute of Technology (東京工業大学) since 2019. His research, much of it joint with Shunsuke Tsuchioka, proves Rogers-Ramanujan type partition identities and Andrews-Gordon type series for standard modules of affine Lie algebras.

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• Won a gold medal at IMO 2009 with a near-perfect 36/100 (rank 12), after silver in 2007 and bronze in 2008 - a rare three-year medal sweep that tracks with his later research career in combinatorics.Jul 2009
• PhD from the University of Tokyo (Mathematical Sciences, 2019) and postdoc at Tokyo Institute of Technology since 2019, with a research focus on partition identities and K-k-Schur functions.2024
• Also a competitive programmer: gold at IOI 2009 and bronze at IOI 2008 alongside his math-olympiad medals, suggesting unusual strength across both olympiad mathematics and algorithmic problem solving.Aug 2009
• His most-cited line of work, largely joint with Shunsuke Tsuchioka, proves conjectured partition identities of Nandi and builds Andrews-Gordon type series for standard modules of affine Lie algebras A^(2)_2.Oct 2019
• Industry internships at Google (SWE intern, Sunnyvale, 2017) and Preferred Networks (research intern, Tokyo, 2016) show a bridge between pure-mathematics training and applied/ML engineering.2017
• Maintains a GitHub presence (mtakigiku, since 2016) with a handful of repositories, consistent with a mathematician who also codes.Aug 2016