[Home]History of Surreal numbers/Talk

HomePage | Recent Changes | Preferences

Revision 16 . . (edit) October 1, 2001 7:21 am by (logged).122.147.xxx
Revision 15 . . September 26, 2001 11:45 pm by PGHancock
Revision 14 . . August 18, 2001 2:55 am by Zundark [embedding in the surreals]
  

Difference (from prior major revision) (minor diff, author diff)

Changed: 18c18
Good questions. I don't know enough about hyperr. numbers to say if they can be embedded into the surr. numbers. Studying they hyperreals is still somewhere on my to-do list. There are some very nice resources on Hyperreals and non-standard analysis on-line:
Good questions. I don't know enough about hyperreal numbers to say if they can be embedded into the surreal numbers. Studying they hyperreals is still somewhere on my to-do list. There are some very nice resources on Hyperreals and non-standard analysis on-line:

Added: 35a36,41

The URL http://www.tondering.dk/claus/surreal.html for the "gentle yet thorough introduction"
doesn't (currently) seem to work, nor does any obvious modification of it.
As for the non-commutativity of ordinal addition, sure, but there is something called the "natural" or
"Hessenberg" sum on ordinals which is commutative. (The definition uses the Cantor normal form, and
basically just "sorts" the summands.) Maybe this is what extends to Conway's addition?

HomePage | Recent Changes | Preferences
Search: