http://mathforum.org/kb List of forum topics en http://mathforum.org/kb/thread.jspa?messageID=8246629&tstart=0#8246629 <spamtrap@library.lspace.org.invalid> wrote:

Feb 3, 2013 12:13:24 PM Feb 3, 2013 12:13:24 PM ullrich@math.okstate.edu 0 http://mathforum.org/kb/thread.jspa?messageID=8242582&tstart=0#8242582 at 09:42 AM, David C. Ullrich <ullrich@math.okstate.edu>]]> Feb 2, 2013 9:47:53 PM Feb 2, 2013 9:47:53 PM spamtrap@library.lspace.org.invalid 1 http://mathforum.org/kb/thread.jspa?messageID=8213846&tstart=0#8213846 > On Jan 30, 11:01 pm, William Elliot <ma...@panix.com>]]> Feb 1, 2013 3:22:03 AM Feb 1, 2013 3:22:03 AM marsh@panix.com 0 http://mathforum.org/kb/thread.jspa?messageID=8203715&tstart=0#8203715 wrote:

>Is every infinite subset S of]]> Jan 31, 2013 10:42:49 AM Jan 31, 2013 10:42:49 AM ullrich@math.okstate.edu 2 http://mathforum.org/kb/thread.jspa?messageID=8198758&tstart=0#8198758 > Is every infinite subset S of omega_0 with the]]> Jan 31, 2013 2:00:34 AM Jan 31, 2013 2:00:34 AM fred.galvin@gmail.com 1 http://mathforum.org/kb/thread.jspa?messageID=8197722&tstart=0#8197722 order isomorphic to omega_0?

Yes. S is an ordinal, a denumerable]]> Jan 31, 2013 12:01:37 AM Jan 31, 2013 12:01:37 AM marsh@panix.com 5