Re: How to visualize limits in category theory

From: Lee Rudolph (lrudolph_at_panix.com)
Date: 12/17/04 

Date: 17 Dec 2004 08:33:03 -0500

"Jesse F. Hughes" <jesse@phiwumbda.org> writes:

>barr@barrs.org (Michael Barr) writes:
>
>> When I think about limits, I think about subobjects of products.
>
>That's *much* clearer than what I wrote, when I said a category is
>complete just in case it has equalizers and products. My answer is
>relevant to completeness, but not a good answer to how to visualize
>limits.

I was pleased to see Michael Barr rework the verb being used
into "think about", and I'm distressed to see you return to
"visualize". Nothing I've read in this thread, from the
beginning on, has seemed to *me* to have anything at all to
do with "visualization" (except, maybe, the occasional post
referring to pentagons). Probably the original poster didn't
mean what I mean by "visualization" either, but if he did, he
hasn't been replied to.

Lee Rudolph

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