Different meanings of math terms in different countries Does anyone know of a list of math terms that have (slightly) different meanings in different countries?
For example, "positive" could mean $\geq 0 $ in some places, and "strictly positive" means $>0$ - See Dutch wikipedia page on Positive numbers, which states "In Belgium, it is a number that is greater than or equal to 0".
Another common example is Domain and range, which is even ambiguous at the author level.
I'd also be interested in distinct math terms that different countries use. E.g. Divisors and factors in American vs British school systems, but this will easily get very long.

Since this is now CW, please add an answer for each term that you are aware of.

There is a declining but still existent tendency in French to not assume fields are commutative, 
English (field, division ring) = French (corps commutatif, corps)
