Welcome to Takashi Sakajo's Homepage

Takashi SAKAJO is now

• Full professor, Department of Mathematics at Kyoto University
• Project professor, Liaison Center in Mathematics at RIMS, Kyoto University
• Seinior visiting scientist at RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS)
• Research supevisor, PRESTO Research Area "Elucidating mathematical structures in real/virtual world objects and their utilization", Japan Science and Technology, Japan
• Chief coordinator, MACS program at Kyoto University
• Sub Project Director (sub-PD), JST Moonshot R&D program Goal8 "Realization of a society safe from the threat of extreme winds and rains by controlling and modifying the weather by 2050"
• JST Moonshot R&D program, A member of Mathematical Sciences Subcommittee
• International Union of Theoretical and Applied Mechanics (IUTAM), A member of General Assembly

My major is Applied Mathematics (Nonlinear Analysis). In paricular, I am interested in understanding highly nonlinear and complex phenomena observed in the evaluations of incompressible fluid motions; I am also interested in interdisciplinary mathematical studies (Math. Meteorology, Medicals, Material Sciences, Mathematical Modeling etc); I am the chief coordinator of Math Clinic Program (MACS Program). The topics in my current research are:

• Topological fluid mechanics (Topological Flow Data Analysis)
• Dissipative weak solutions of the Euler equations and Turbulence theory
• Vortex Dynamics (Point Vortex on Closed Surface)
• Flow control of vortex dominated flows
• Singularity formation and long-time behavior of vortex dynamics
• Applied and Computational Complex Analysis
• Interdisciplinary Studies (Mathematical Meteorology, Math Clinic at Kyoto U)

Keywords:

• Research Topic: Topological and geometric fluid mechanics, Turbulence Theory, Vortex Dynamics, Mathematical Meteorology, Mathematical Modeling, Interdisciplinary Mathematics.
• Topics in Mathematics: Nonlinear dynamical systems, Bifurcation theory, Partial differential equations, Numerical Analysis, Topology, Symplectic geometry.
• Topics in Numerical methods: Vortex method, Spectral method, Fast tree-codes, Fast Multipole Method, Numerical Conformal mapping

PI of Research Project funded by Japan Science and Technology:

• JST PRESTO research fellowship for the project, "Dynamical Systems Theory for Hydrospheric Environments"(2007-2010)
• JST Math CREST, "Towards a Paradigm Shift Created by Mathematics of Vortex-Boundary Interactions" (2010-2016).
• JST Mirai Program "Common Platform Technology, Facilities, and Equipment" mission area: Full-scale R&D Project,
  "Four-Dimensional Topological Data Analysis for Future Medical Care"(2022-2026)