Timeline for Can you prove equivalence without being able to calculate it?
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 30 at 19:41 | comment | added | Nick S | As a nice "explicit" application, one of my favourite exiercise is to prove that $(\mathbb R, +)$ and $(\mathbb C, +)$ are isomorphic as abelian groups. | |
| Sep 11, 2021 at 19:39 | history | made wiki | Post Made Community Wiki by Stefan Kohl♦ | ||
| Jan 31, 2010 at 3:48 | vote | accept | Daniel Moskovich | ||
| Jan 7, 2010 at 10:58 | history | answered | Kevin Buzzard | CC BY-SA 2.5 |