Timeline for "Interesting" properties of sets of natural numbers
Current License: CC BY-SA 2.5
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 8, 2010 at 20:20 | comment | added | Hans-Peter Stricker | At least every interesting natural number is (= represents) also an interesting (finite) set of natural numbers - via Ackermann encoding of hereditarily finite sets (see: gdz.sub.uni-goettingen.de/dms/load/img/…). | |
| Feb 8, 2010 at 16:52 | comment | added | Hans-Peter Stricker | Chapeau! But: The question was about interesting properties of sets of natural numbers. Can your proof be generalized? | |
| Feb 8, 2010 at 16:47 | comment | added | MBN | Also, every natural number is interesting in infinitely many ways. | |
| Feb 8, 2010 at 16:40 | comment | added | Joel David Hamkins | And also every transfinite ordinal is interesting! (for the same reason...) | |
| Feb 8, 2010 at 16:37 | history | answered | Joel David Hamkins | CC BY-SA 2.5 |