In article <4E4C63B6.email@example.com>, "Stephen J. Herschkorn" <firstname.lastname@example.org> wrote:
> In America, at least, when pronouncing f o g (the composition of > functions f and g), we say "eff op gee" (right?).
I never heard that. I always heard "f composed with g". But I studied analysis mainly.
> That is, we > read the composition operator as "op." Does anyone know the source of > this? Perhaps this is an abbreviation of f "operating on" g. And > what is the history of this convention, do you know?