Timeline for why is this a sufficient condition for a domain to be a core of an unbounded operator?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Oct 5, 2013 at 23:48 | comment | added | André Henriques | I also found this reference useful: fuw.edu.pl/~derezins/mat-u.pdf | |
| Sep 10, 2013 at 9:06 | vote | accept | André Henriques | ||
| Sep 9, 2013 at 10:29 | comment | added | André Henriques | Great! Having read the proof, I'd like to make the following two remarks to help other readers. (1) The fact that $H$ was a Hilbert space is irrelevant, the proof works equally well for Banach spaces (2) The fact that the operators $\alpha(t)$ are invertible is also not used, it is enough for $\alpha$ to be defined on the semigroup of positive reals $\mathbb R_{\ge 0}$. | |
| Sep 9, 2013 at 9:53 | history | answered | Michael Renardy | CC BY-SA 3.0 |