"jaakov" <jaakov@roREMOVEIT.ru> wrote in message
news:ipgp3l$jbk$4@news1.mynetnews.org...
> Dear all:
>
> What is correct, what sounds better:
>
> Two maps f,g coincide on a set X if f|_X=g|_X.
>
> Or
>
> Two maps f,g coincide in a set X if f|_X=g|_X.
This is obviously not standard English but the jargon
(for publication) of a particular speciality: so the rules
or preferences that apply are those of this special-purpose
jargon. Those of standard English are at most secondary
to your professional purpose.
--
Don Phillipson
Carlsbad Springs
(Ottawa Canada)
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