Tomio Kubota

is a Japanese mathematician, who studies number theory. His contributions include works on p-adic L functions and real-analytic automorphic forms.

His work on p-adic L-functions, later recognised as an aspect of Iwasawa theory, was joint with Leopoldt. [http://eom.springer.de/i/i130090.htm]

He extended the concept of metaplectic group, in a way significant for arithmetic applications. [http://eom.springer.de/S/s130280.htm] This opened a field for later research on associated Dirichlet series and automorphic forms, and was a major step in the solution of Kummer's conjecture. [Jeff Hoffstein, "Eisenstein Series and Theta Functions on the Metaplectic Group", pp. 73-78, in Maruti Ram Murty, "Theta Functions: From the Classical to the Modern" (1993).]

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