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From: "Fred Linton" <flinton@wesleyan.edu>
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Subject: Re: Isbell duality
Date: Wed, 11 Jul 2007 21:20:58 -0400 (EDT)
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Michael asked:

> I have seen a reference to Isbell duality.  Can anyone point me to a
> definition and any results?

Perhaps John's 196x-ish "Structure of Categories" paper is what you seek.

-- F.