User:KWBScience/Vencel Operator

Definition of Vencel Operator
$$

\hat{\upsilon} = \frac{1}{r_1} \frac {\partial} {\partial r_1} + \frac{1}{r_2} \frac {\partial} {\partial r_2}

$$

Vencel-Sue identity
$$

\hat{\upsilon} \sigma = \omega

$$