Timeline for Understanding a quip from Gian-Carlo Rota
Current License: CC BY-SA 3.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 27, 2021 at 18:46 | history | made wiki | Post Made Community Wiki by Stefan Kohl♦ | ||
| May 23, 2017 at 23:51 | comment | added | Denis Nardin | @darijgrinberg The $\lambda$-structure of $K_*(X)$ is kind of important (e.g. rationally the splitting of $K_*(X)$ in eigenspaces for the Adams operations is precisely the splitting in rational motivic cohomology groups) but not really "central", in the sense that you can develop large swaths of the theory without mentioning it (although it will probably lurk in the backgroud). | |
| May 23, 2017 at 20:55 | answer | added | Will Sawin | timeline score: 46 | |
| May 23, 2017 at 20:15 | answer | added | Tom Copeland | timeline score: 12 | |
| May 23, 2017 at 18:29 | comment | added | darij grinberg | $K_0$ of a ring is a $\lambda$-ring, and of course the free $\lambda$-ring on one generator is the ring of symmetric functions... so K-theory in some sense has its origins in the symmetric functions. Though I don't know how much of this sticks around in the higher $K_i$'s. | |
| May 23, 2017 at 18:17 | comment | added | Todd Trimble | @René Touché! Of course you're right. :-) | |
| May 23, 2017 at 16:21 | answer | added | Vladimir Dotsenko | timeline score: 7 | |
| May 23, 2017 at 16:02 | answer | added | Abdelmalek Abdesselam | timeline score: 18 | |
| May 23, 2017 at 15:51 | comment | added | Liviu Nicolaescu | This MO post might be relevant mathoverflow.net/questions/66075/… | |
| May 23, 2017 at 15:45 | comment | added | R.P. | @ToddTrimble: Isn't that what diatribes are for? :-) | |
| May 23, 2017 at 15:28 | comment | added | Todd Trimble | There's also a dearth of real scholarly evidence in many of his diatribes/rants. | |
| May 23, 2017 at 14:59 | comment | added | Sam Hopkins | A hint to decoding Rota: Rota said a lot of intentionally provocative things. | |
| May 23, 2017 at 14:55 | answer | added | Joël | timeline score: 24 | |
| May 23, 2017 at 14:46 | review | First posts | |||
| May 23, 2017 at 14:51 | |||||
| May 23, 2017 at 14:40 | history | asked | William Stagner | CC BY-SA 3.0 |