Books (novels and essays) Japanese literature Proof of eternity

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Japanese Literature
Japanese Literature
In my best friend's notebook, there was a proof of the unsolved problem. Adventure around mathematics! A research note left by Mitsuya 瞭司, a mathematician who was said to be a genius. There was a proof of the unsolved problem "Collatz conjecture." Yuichi Kumazawa, a close friend of 瞭司 who inherited the notebook, tried to confirm the validity of the proof.