Mathematics and precedence rules

[nedz]

Funnily enough there is a similar 'official' numbering discrepancy in the British monarchy. Because monarchs only started being numbered after the Norman conquest, King Edward I was actually the second monarch to be called Edward (Edward the Confessor having been the first) and so on with all subsequent Edwards.

Its slightly worse than that since after the act of union we have two numbering systems: one English, one Scottish. Hence James I/VI etc.

Pi is a constant, originally defined as the ratio of the circumference and the diameter of a circle on a Euclidean plane.

Its value doesn't change, even though there are non-Euclidean "circles" that are not on a Euclidean plane.

See below