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Aug 9 at 4:28 comment added user152256 to me is far from clear why the new norm given by $|x|:=\|Sx\|$ is complete, can you expand about this?
Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Oct 15, 2014 at 12:31 comment added Gerald Edgar ... of course (as noted by Simon) that unbounded $\phi$ cannot be explicitly constructed. And cannot be constructed at all in simple ZF set theory.
Oct 15, 2014 at 10:49 vote accept Bernhard
Oct 15, 2014 at 10:48 vote accept Bernhard
Oct 15, 2014 at 10:49
Oct 15, 2014 at 8:44 history answered gsa CC BY-SA 3.0