Taro Morishima (森嶋 太郎? Morishima Tarō, 1903 – 1989) was a Japanese mathematician specializing in algebra who attended University of Tokyo in Japan. Morishima published at least thirteen papers, including his work on Fermat's Last Theorem. and a collected works volume published in 1990 after his death. He also corresponded several times with American mathematician H. S. Vandiver.
Morishima's Theorem on FLT
- Let m be a prime number not exceeding 31. Let p be prime, and let x, y, z be integers such that xp + yp + zp = 0. Assume that p does not divide the product xyz. Then, p² must divide mp − 1-1.
Granville wrote that Morishima's proof could not be accepted. 
- Morishima, Taro (January 1952). "On Fermat's Last Theorem (Thirteenth Paper)". Transactions of the American Mathematical Society. 72 (1): 67–81. doi:10.2307/1990655. JSTOR 1990655.
- Morishima, Taro; Y Karamatsu (1990). Collected papers of Taro Morishima. Kingston, Ontario, Canada: Queens University.
- "A Guide to the H. S. Vandiver Papers, 1889-1977". The Center for American History at the University of Texas at Austin. Retrieved 2006-11-28.
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