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Math Forum » Discussions » sci.math.* » sci.math.independent

Topic: Functional composition: "op"
Replies: 11   Last Post: Aug 18, 2011 1:18 PM

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W^3

Posts: 28
Registered: 4/19/11
Re: Functional composition: "op"
Posted: Aug 18, 2011 12:10 AM
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In article <4E4C63B6.2080007@netscape.net>,
"Stephen J. Herschkorn" <sjherschko@netscape.net> 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?

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