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Oct 5, 2023 at 12:38 comment added Christian Remling $T_1$ is the first operator you define (= closure of the fractional Laplacian on $C_0^{\infty}$), and $T_2$ is the second one (via the third displayed equation).
Oct 5, 2023 at 6:30 comment added B.Hueber Can you maybe specify what $T_{1,2}$ in your comment are?
Oct 4, 2023 at 20:40 comment added Christian Remling I don't think that's a good summary of my comment. My hope is that I said exactly what I meant to say in a clear manner. The description of the domain you give follows from my comment when combined with material in your post that I didn't check.
Oct 4, 2023 at 14:34 comment added B.Hueber @ChristianRemling thanks for the comment. So you are basically saying that $\mathcal{D}(\overline{\Delta_{g}}^{s})=H^{2s}(M)$?
Oct 4, 2023 at 14:30 comment added Christian Remling If we denote your first and second version of the operator by $T_{1,2}$, then the second definition really just says that $T_2=T_1^*$. ($C_0^{\infty}$ is a core of $T_1$, so you get the third displayed equation for all $\varphi\in D(T_1)$.) Since $T_1$ was self-adjoint, this gives $T_2=T_1$.
Oct 4, 2023 at 13:32 history asked B.Hueber CC BY-SA 4.0