  The infinitesimal generator of a one-parameter subgroup of the infinite
dimensional rotation group associated with the complex Gelfand triple $ (E)
\subset L^2(E^*, \mu) \subset (E)^* $ is of the form $$ R_\kappa =
\int_{T\times T} \kappa(s,t) (a_s^* a_t - a_t^* a_s) ds dt $$ where $\kappa \in
E \otimes E^*$ is a skew-symmetric distribution. Hence $R_\kappa$ is twice the
conservation operator associated with a skew-symmetric operator $S$. The Lie
algebra containing $R_\kappa$, identity operator, annihilation operator,
creation operator, number operator, (generalized) Gross Laplacian is discussed.
We show that this Lie algebra is associated with the orbit of the
skew-symmetric operator $S$.
