Timeline for Are these rings of functions isomorphic?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Sep 13, 2013 at 19:21 | vote | accept | CommunityBot | ||
| Sep 13, 2013 at 16:41 | comment | added | Todd Trimble | Yes. But why is this question still open at MO, do you think? | |
| Sep 12, 2013 at 17:12 | comment | added | Pietro Majer | Here $u:=\chi_{[1,+\infty)}$ in the case of $X=R$. One may state several analogous properties in terms of notions such as invertible /idempotent /square /square root of $1$. | |
| Sep 12, 2013 at 16:52 | history | edited | Pietro Majer | CC BY-SA 3.0 |
added 63 characters in body
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| Sep 12, 2013 at 14:38 | history | answered | Pietro Majer | CC BY-SA 3.0 |