Just wanted to point out that this is not friendly for beginners. A beginner will be lost between a lot of "\frac"s and "{}"s (I don't know the name in English, sorry). Been there
(Disambiguating with an adjective does make it ok to use either -- "Curly brackets" are still { }, and "square braces" are still [ ] )
Stop imposing your stupid American stuff on people.
It's not "stupid" to assume the dialect we're using is American English. Why the aggressiveness?