Ryogo Hirota

Ryogo Hirota (1932-2015) was a Japanese mathematician and  professor at Waseda University who investigated integrable nonlinear differential equations and their discrete analogues.R. Hirota, J. Phys. Soc. Jpn. 43 (1977) 4116–4124.R. Hirota, J. Phys. Soc. Jpn. 43 (1977) 2074–2078.R. Hirota, J. Phys. Soc. Jpn. 43 (1977) 2079–2086.R. Hirota, J. Phys. Soc. Jpn. 45 (1978) 321–332.R. Hirota, J. Phys. Soc. Jpn. 46 (1979) 312–319. He invented a method for solving nonlinear differential equations, which is currently known as "Hirota's direct method".Hirota, R. (2004). The direct method in soliton theory (Vol. 155). Cambridge University Press.Wazwaz, A. M. (2008). The Hirota's direct method for multiple-soliton solutions for three model equations of shallow water waves. Applied Mathematics and Computation, 201(1-2), 489-503.Wazwaz, A. M. (2008). The Hirota’s direct method and the tanh–coth method for multiple-soliton solutions of the Sawada–Kotera–Ito seventh-order equation. Applied Mathematics and Computation, 199(1), 133-138.

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category:1932 births
category:2015 deaths
Category:Japanese mathematicians
Category:Waseda University faculty