Timeline for On the intersection of finitely many ultrafilters
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 2, 2023 at 20:21 | answer | added | Joseph Van Name | timeline score: 3 | |
| Oct 2, 2023 at 10:18 | answer | added | Joel David Hamkins | timeline score: 9 | |
| Sep 28, 2023 at 22:39 | comment | added | Joseph Van Name | By Stone duality, the intersections of finitely many ultrafilters are in a one-to-one correspondence with the finite subsets of a compact totally disconnected space. | |
| Sep 28, 2023 at 22:15 | review | Close votes | |||
| Oct 6, 2023 at 3:08 | |||||
| Sep 28, 2023 at 22:13 | history | edited | LSpice | CC BY-SA 4.0 |
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| Sep 28, 2023 at 21:45 | comment | added | Andreas Blass | A filter $F$ on a set $X$ is the intersection of at most $n$ ultrafilters iff, whenever $X$ is partitioned into $n+1$ pieces, at least one of these pieces is in the ideal dual to $F$. | |
| Sep 28, 2023 at 21:33 | comment | added | YCor | Is "a filter that is contained in finitely many filters" a satisfactory characterization? | |
| S Sep 28, 2023 at 20:53 | review | First questions | |||
| Sep 28, 2023 at 21:54 | |||||
| S Sep 28, 2023 at 20:53 | history | asked | Carlos Uzcategui Aylwin | CC BY-SA 4.0 |