Skip to main content
4 events
when toggle format what by license comment
Feb 3, 2015 at 9:53 comment added mdg Proving existence is unnecessary.
Nov 29, 2014 at 12:21 comment added fedja Thanks for your comment nevertheless. I'll definitely think of it :-).
Nov 29, 2014 at 12:19 comment added fedja It certainly is, but I can get any interesting result you want by introducing a non-existing object axiomatically and developing a fascinating theory of it to include the desired statement, so the proof of existence in this case is a must because I have never yet seen a student who was born with intuition and natural feelings about things like Borel sigma-algebra and general continuous time processes that wouldn't be way off from how it really is (unlike real number, when everybody is born with a decent idea of what that might be and just cannot express it in words, so definition is enough).
Nov 29, 2014 at 7:56 history answered Bjørn Kjos-Hanssen CC BY-SA 3.0