Yasutaka Ihara (伊原 康隆, Ihara Yasutaka; born May 3, 1938 in Tokyo Prefecture) is a Japanese mathematician and professor emeritus at the Research Institute for Mathematical Sciences. His work in number theory includes Ihara's lemma and the Ihara zeta function.
Source: “Yasutaka Ihara”, English Wikipedia (CC BY-SA 4.0), excerpt
