Formula_21795

\[\operatorname{rot} \boldsymbol{a}=\left\{\frac{\partial a_{z}}{\partial y}-\frac{\partial a_{y}}{\partial z}, \frac{\partial a_{x}}{\partial z}-\frac{\partial a_{z}}{\partial x}, \frac{\partial a_{y}}{\partial x}-\frac{\partial a_{x}}{\partial y}\right\},\]