Drexel dragonThe Math ForumDonate to the Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » sci.math.* » sci.math

Topic: Compactifications
Replies: 6   Last Post: Mar 24, 2013 2:05 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Shmuel (Seymour J.) Metz

Posts: 3,473
Registered: 12/4/04
Re: Compactifications
Posted: Mar 24, 2013 2:05 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

In <jg3sk8lq06f1gbkvp6n3kue53klrrsbfn7@4ax.com>, on 03/23/2013
at 02:19 PM, David C. Ullrich <ullrich@math.okstate.edu> said:

>On Sat, 23 Mar 2013 19:10:30 +0000, Frederick Williams
><freddywilliams@btinternet.com> wrote:

>>"David C. Ullrich" wrote:
>>> On Sat, 23 Mar 2013 00:30:27 -0700, William Elliot <marsh@panix.com>
>>> wrote:

>>> >Number of non-homeomophic n-point Hausdorff compactifications
>>> Compactifications of _what_?

>>The reals x {0,1,...,k} I suppose.

>No, there's only one compactification of that set.

How do you figure? There's only on one-point compactification, but
there are many n-point compactifications for n>1.

Shmuel (Seymour J.) Metz, SysProg and JOAT <http://patriot.net/~shmuel>

Unsolicited bulk E-mail subject to legal action. I reserve the
right to publicly post or ridicule any abusive E-mail. Reply to
domain Patriot dot net user shmuel+news to contact me. Do not
reply to spamtrap@library.lspace.org

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2016. All Rights Reserved.