Timeline for A compactification of the non-negative rationals with the discrete topology
Current License: CC BY-SA 3.0
4 events
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| Aug 31, 2014 at 17:38 | comment | added | Yemon Choi | @LeonelRobert that seems to be correct - thanks. The description feels somehow "non-canonical", since there are lots of ways to chop up the rationals to run the same argument, but maybe that just illustrates the large automorphism group of this space | |
| Aug 31, 2014 at 16:23 | comment | added | Leonel Robert | The ideal of $A$ of functions supported in $[N,N+1)$ is isomorphic to $\ell_\infty(\mathbb N)$, and $A$ seems to be a direct sum of all these (in the category of C*-algebras). So $\Omega_S$ should be the one point compactification of a countable union of copies of $\beta N$. | |
| Aug 31, 2014 at 12:54 | history | edited | Yemon Choi | CC BY-SA 3.0 |
added full stop before someone else does
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| Aug 31, 2014 at 12:33 | history | asked | Yemon Choi | CC BY-SA 3.0 |