Timeline for What is the idea behind stationary sets?
Current License: CC BY-SA 2.5
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| Sep 2, 2010 at 15:28 | comment | added | Joel David Hamkins | Another reason to care about stationary sets: in the case of $\omega_1$, the stationary sets are precisely the sets that could have a club subset in a forcing extension. That is, we can force to shoot a club through any given stationary set, by forcing that preserves $\omega_1$. | |
| Sep 2, 2010 at 14:49 | history | edited | Joel David Hamkins | CC BY-SA 2.5 |
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| Sep 2, 2010 at 14:43 | history | edited | Joel David Hamkins | CC BY-SA 2.5 |
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| Sep 2, 2010 at 14:36 | history | answered | Joel David Hamkins | CC BY-SA 2.5 |