PEP309 - built-in curry class (revisions)
Steve Holden
sholden at holdenweb.com
Fri Feb 28 10:15:54 EST 2003
"Robert Kern" <kern at taliesen.caltech.edu> wrote ...
> (Peter Harris) writes:
>
> [snip]
>
> > Maybe I got confused. I thought the notation (F o G)(x) in maths
> > meant the result of applying F to x and then applying G to that.
> > Am I just thinking of UNIX pipes or something?
>
> (F o G)(x) = F(G(x))
>
> http://mathworld.wolfram.com/Composition.html
>
Or, for us verbal types, it's "The result of applying F to the result of
applying G to x" and not [what Peter wrote].
In my analysis class days, now over half a lifetime ago, I believe I would
have read both these notations (mentally) as "F of G of x". But then I was
never one for exceptional rigor in proof. As my publishers will attest.
TalkingInWikiWords-ly y'rs
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