- Hi,Let $G$ be a LC group and $T:L^{2}(G)\longrightarrow L^{2}(G)$ be

a bdd operator. Also assume that $\alpha\in Aut(G)$. I think that

$$T(f\circ\alpha)=T(f)\circ\alpha.$$

But I Cann't proof or disproof it. Even a reference to the proof

will help. Thanks

Looking for a deal? Find great prices on flights and hotels with Yahoo! FareChase. - Dear Colleagues,

If one can interpret the Laplacian $\Delta$ as curvature or

strain energy, is there a geometric or physical interpretation

of $\Delta^{3/2}$??

Hendra Gunawan - I am sorry, but what I am interested in is actually $\Delta^{3/4}$.

Hendra Gunawan

> Dear Colleagues,

>

> If one can interpret the Laplacian $\Delta$ as curvature or

> strain energy, is there a geometric or physical interpretation

> of $\Delta^{3/2}$??

>

> Hendra Gunawan