Timeline for Diagonal map and "infinitesimal points"
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 30, 2021 at 11:17 | comment | added | Arrow | Just thought I'd point out that the notation $\mathrm d^n$ is used by Grothendieck in EGA IV, part 4, definition 16.3.6. | |
| Jan 3, 2021 at 16:40 | comment | added | Nicolás | Possible, I don't remember now what is the right notation for this map. Thanks! | |
| Jan 2, 2021 at 9:26 | comment | added | Arrow | Dear Nicolás, isn't it customary to denote by $\mathrm df$ the homogeneous first order part of the Taylor expansion of $f$, i.e $\mathrm df=f^\prime(t)\mathrm dt$? The map you call $\mathrm d^n$ is more like the $n$-jet map, no? | |
| Apr 9, 2013 at 10:26 | history | answered | Nicolás | CC BY-SA 3.0 |