Any symplectic manifold $(M,\omega)$ carries a representation of $\frak{sl}_2$: Define the maps $$ L: \Omega^\bullet \to \Omega^{\bullet}, ~~~~~~~~~ \Lambda: \Omega^\bullet \to \Omega^{\bullet}, ~~~~~~~~~ H: \Omega^\bullet \to \Omega^{\bullet}, $$ as follows $$ L(\nu) := \omega \wedge \nu, ~~~~~ \Lambda(\nu) := \sum \omega_{ij}^{-1} i_{\partial_i} i_{\partial_j}(\nu), $$ where $i$ denotes the interior product, and finally, for any $\mu \in \Omega^k$, we define $$ H(\mu) = (n-k) \mu. $$ This can be shown by direct calculation to satisfy $$ [L,\Lambda] = H, ~~~~~~ [L,H] = 2L, ~~~~~~ [\Lambda,H] = -2 \Lambda. $$ Is there a conceptual, or at least non-computational, proof of this result that anyone can direct me to. Also, I am happy to hear of more philosophical reasons for this to be true.

Complex Geometry: An Introduction, Springer (2005). Besides, is there an easy way to see that your definition of $\Lambda$ does not depend on the choice of coordinates? $\endgroup$