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Topic: Help to choose a notation
Replies: 2   Last Post: Oct 23, 2013 12:03 PM

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William Elliot

Posts: 2,637
Registered: 1/8/12
Re: Help to choose a notation
Posted: Oct 14, 2013 10:29 PM
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On Mon, 14 Oct 2013, Victor Porton wrote:

> What notation of the subspace of f (where f may be topological, uniform,
> metric, etc. space) generated by a set X is better:

There's standard notation for a function f with it's domain restricted to a set
A, namely f|A as rendered in ascii.

> 1. Subspace(f;X)

The choice of f for a space is extremely bad for f is usually used for
functions. If S is a space and A subset S, then S|A is the subspace A,
ie. S restricted to A.

> 2. SubSpace(f;X)


> 3. fill your own notation
> The notation f|_X is already taken for an other (however related) thing.

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