From: Bill Rowan <rowan@transbay.net>
To: categories@mta.ca
Subject: Abelian Topological Groups
Date: Mon, 30 Apr 2001 21:37:18 -0700 (PDT) [thread overview]
Message-ID: <200105010437.f414bIi14109@transbay.net> (raw)
I am attempting to construct the ideal abelian category within which live
complete, hausdorff abelian topological groups. The idea is that the
quotients of such a group, in the abelian category, would be completions
of the group with respect to topologies coarser than the given one. The
subobjects would be those topologies. Of course, having a topology as an
object in the abelian category means we have to have objects in the category
other than abelian groups.
Of course I want to know if this has been done before. Also, what other ideas
are there about the ideal abelian category containing these groups? Mac Lane
felt that compactly-generated spaces formed the ideal base category for
topological algebra. I seem to be using the category of complete, hausdorff
uniform spaces as a base category. I wrote a paper on (universal) algebras
with a compatible uniformity, and got some nice results about the congruence
(actually, uniformity) lattices. But, admittedly, algebras with compatible
uniformities have drawbacks as a foundation for topological algebra because
even something like the complex numbers cannot be formalized as such, the
multiplication not being uniformly continuous.
Bill Rowan
next reply other threads:[~2001-05-01 4:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-01 4:37 Bill Rowan [this message]
2001-05-02 10:11 ` Michael Barr
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