was a Japanese

economist An economist is a professional and practitioner in the social sciences, social science discipline of economics. The individual may also study, develop, and apply theories and concepts from economics and write about economic policy. Within this ...

known for his contributions to

mathematical economics Mathematical economics is the application of Mathematics, mathematical methods to represent theories and analyze problems in economics. Often, these Applied mathematics#Economics, applied methods are beyond simple geometry, and may include diff ...

. In particular, he is recognized as one of the first economists to utilize

Lyapunov stability Various types of stability may be discussed for the solutions of differential equations or difference equations describing dynamical systems. The most important type is that concerning the stability of solutions near to a point of equilibrium. ...

theory for analyzing the stability of economic equilibria. In 1970, he served as president of the Japanese Economic Association.

References

1909 births 1995 deaths Japanese economists Member of the Mont Pelerin Society {{Japan-economist-stub