Timeline for Uniqueness of solution of the wave equation
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Apr 13, 2023 at 12:10 | comment | added | Willie Wong | @HansLundmark: that's probably the right set (though it is best to ask Piero since he was the one who mentioned its existence in the other comment thread). It is funny to look back and think how some of the "modern" results that I was learning as a grad student have now become "classical". | |
| Apr 13, 2023 at 11:08 | comment | added | Hans Lundmark | The Wayback Machine has a copy of Selberg's old NTNU webpage. Maybe these are the notes you are referring to? | |
| May 25, 2020 at 3:45 | comment | added | Willie Wong | @DanieleTampieri: I believe you are correct. | |
| May 24, 2020 at 9:02 | vote | accept | asv | ||
| May 23, 2020 at 19:12 | comment | added | Daniele Tampieri | +1 Very nice proof. It seems to me that the technique you used in the proof can be almost verbatim extended to the case of hyperbolic equations of $C^\infty$-smooth coefficients: while my answer relies on an explicit representation which cannot be easily obtained for variable coefficient equations (Hadamard docet), you need only to know that a compactly supported initial datum will propagate with a finite speed and thus remain compactly supported. | |
| May 22, 2020 at 16:54 | history | edited | Willie Wong | CC BY-SA 4.0 |
fixed typo
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| May 22, 2020 at 7:55 | comment | added | Piero D'Ancona | Nicely written! | |
| May 22, 2020 at 1:46 | history | answered | Willie Wong | CC BY-SA 4.0 |