The Impossibility of Double Gallows

[david]

BTW, the Roman numerals cannot be combined in any order. E.g. "IM" would be invalid.

That reflects modern usage. The Romans themselves never seemed to have made a clear system.
BTW, IM was used You are not allowed to view links. Register or Login to view.: It should also be noted that the Romans themselves never wrote M for 1000, but instead wrote (I) for , (I)(I) for , etc., and also occasionally wrote IM, IIM, etc. (Menninger 1992, p. 281; Cajori 1993, p. 32).


Whilst I agree in general terms on your rarity argument, I remind you we are talking about a handwritten manuscript from a time when spelling was not generally standardised. Six errors in over 38,000 words, when no apparent pattern can be discerned between those six words, can be put down to simple scribal error.