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- Newsgroups: sci.math
- Path: sparky!uunet!snorkelwacker.mit.edu!galois!riesz!jbaez
- From: jbaez@riesz.mit.edu (John C. Baez)
- Subject: Re: What a weird group!!!
- Message-ID: <1992Oct15.185324.18631@galois.mit.edu>
- Sender: news@galois.mit.edu
- Nntp-Posting-Host: riesz
- Organization: MIT Department of Mathematics, Cambridge, MA
- References: <1992Oct15.045312.13089@galois.mit.edu> <1bjnc4INN7hp@function.mps.ohio-state.edu>
- Date: Thu, 15 Oct 92 18:53:24 GMT
- Lines: 20
-
- In article <1bjnc4INN7hp@function.mps.ohio-state.edu> edgar@function.mps.ohio-state.edu (Gerald Edgar) writes:
- >
- >>[the Bohr compactification of the real numbers]
- >
- >>But what does this group *look like*?? That's what I'd like to know!!
- >
- >The construction uses the Axiom of Choice, so no one knows...
-
- Well, aren't there at least some theorems about it, so I can get some
- idea of what it's like? I wasn't asking for an explicit construction of
- every element. :-)
-
- >For a (perhaps) simpler warm-up, try the Bohr compactification of the
- >integers.
-
- >Or, before you tackle visualizing that, how about visualizing the
- >Stone-Cech compactification of the integers?
-
- Is that a group too? I'm just looking for some interesting tidbits of
- knowledge.
-