玉川大学と千葉大学に所属する川崎敏治さん(崎はたつさき)の単著論文「A proof of the Collatz conjecture」がarXivでプレプリント(査読前)として登場した。新たな不動点定理を使用して、数学の未解決問題「コラッツ予想」を証明したという。査読前のため現 ...
Experienced mathematicians warn up-and-comers to stay away from the Collatz conjecture. It’s a siren song, they say: Fall under its trance and you may never do meaningful work again. The Collatz ...
At first glance, the problem seems ridiculously simple. And yet experts have been searching for a solution in vain for decades. According to mathematician Jeffrey Lagarias, number theorist Shizuo ...