Staff -TAKEI, Yoshitsugu-

Name TAKEI, Yoshitsugu
Position Associate Professor
E-Mail takei (email address: add
Yoshitsugu Takei is working on differential equations, particularly on the exact WKB analysis of linear and nonlinear differential equations. In collaboration with T. Aoki (Kinki Univ.) and T. Kawai (RIMS), he has succeeded in describing the monodromic structure of solutions of linear ordinary differential equations through the exact WKB analysis, discovered the exact steepest descent method, and established the exact WKB analysis of Painlevé equations. His current interest is to obtain an explicit description for the resurgent-analytical structure of WKB-type formal solutions of linear differential equations as well as of Painlevé equations, and also to develop the exact WKB analysis for various hierarchies of higher order Painlevé equations.