• Kazumara@discuss.tchncs.de
    link
    fedilink
    arrow-up
    0
    ·
    30 days ago

    it’s much easier to just substract 2 from 2000, “IIMM” duh!

    For anyone wondering why this is wrong, there are two reasons:

    1. The roman numeral system only traditionally contains subtractions from the next higher five- and tenfold symbol. So you can subtract I from V and X, X from L and C, C from D and M

    2. The subtractions only generally allowed one symbol to be subtracted, with a few notable exceptions like XIIX for 18 and XXIIX for 28

    • edwardbear@lemmy.world
      link
      fedilink
      arrow-up
      1
      ·
      30 days ago

      Holy shit this is dope!

      But how did historians come up with the conclusion that, in the case of XIIX, the Romans substracted from the second X, and didn’t just write 12+10?

      Not arguing, just extremely curious