• Klear@lemmy.world
      link
      fedilink
      English
      arrow-up
      6
      ·
      17 days ago

      It’s a reference to Fermat’s Last Theorem.

      Tl;dr is that a legendary mathematician wrote in a margin of a book that he’s got a proof of a particular proposition, but that the proof is too long to fit into said margin. That was around the year 1637. A proof was finally found in 1994.