Timeline for Abstract Wave Equation and Semigroups
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 16, 2016 at 21:37 | vote | accept | Matthias Ludewig | ||
| May 16, 2016 at 6:35 | answer | added | András Bátkai | timeline score: 4 | |
| May 16, 2016 at 6:26 | comment | added | András Bátkai | If $B$ is unbounded, then this is never a semigroup generator. You have to work in a different product space, the so-called energy space. | |
| May 15, 2016 at 23:18 | comment | added | Liviu Nicolaescu | For nonlinear semigroups see the paper by V. Barbu: Sur un problème aux limites pour une classe d'équations différentielles non linéaires abstraits du deuxième ordre en $t$. (French) C. R. Acad. Sci. Paris Sér. A-B 274 (1972) | |
| May 15, 2016 at 23:12 | comment | added | Liviu Nicolaescu | The Hille-Yosida theory applies to the operator $B$ as well. See for example Sec.10.3 of Brezis' book Functional Analysis, Sobolev Spaces and Partial Differential Equations | |
| May 15, 2016 at 21:35 | history | asked | Matthias Ludewig | CC BY-SA 3.0 |