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Darren New wrote:
> I think I was more making the point that "distance" isn't a simple
> definition when you're talking about space that curves in different
> directions in different places.
Sure. I get that.
> Indeed, isn't it possible to have spaces where the distance from here to
> there is different than the distance from there to here?
No. The definition of "metric" demands that it is symmetric (and
reflexive, and transitive).
You can, of course, define a function that represents some sort of
"nearness" which never the less lacks this property...
--
http://blog.orphi.me.uk/
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