Timeline for Examples of common false beliefs in mathematics
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 5, 2020 at 4:20 | comment | added | AlexArvanitakis | @user539887 It looks like that's the same as the Dyson series (from HE theory) | |
| Aug 1, 2019 at 10:57 | comment | added | Pietro Majer | For instance, the formula holds true if $A$ is a path of commuting operators: $[A(t),A(s)]=0$ for all $s,t$: then nothing changes w.r.to the scalar case. | |
| Aug 27, 2018 at 14:58 | comment | added | Phil Tosteson | @Hans Physicists refer to the time ordered exponential: en.wikipedia.org/wiki/Ordered_exponential | |
| May 4, 2018 at 8:20 | comment | added | user539887 | @Hans In contrast, the Magnus expansion is very complicated and may not converge except close to the initial time. | |
| May 4, 2018 at 8:15 | comment | added | user539887 | @Hans The Peano-Baker series is, in my opinion, simple, and converges where it should. There is a nice paper by Baake and Schlägel The Peano-Baker series, Proceedings of the Steklov Institute of Mathematics 275 (1) (2011), 155-159 (the paper is behind a paywall on the Publisher's page, but the authors put a copy on ResearchGate (researchgate.net/publication/47702535_The_Peano-Baker_series)). | |
| May 3, 2018 at 18:11 | comment | added | Hans | Is there a simple expression that is true? | |
| Apr 27, 2018 at 23:26 | comment | added | Michael | I am holding this belief right now. | |
| Mar 23, 2018 at 23:01 | review | Late answers | |||
| Mar 23, 2018 at 23:05 | |||||
| S Mar 23, 2018 at 22:45 | history | answered | user539887 | CC BY-SA 3.0 | |
| S Mar 23, 2018 at 22:45 | history | made wiki | Post Made Community Wiki by user539887 |