Formula_5198

\[\frac{d f_{\alpha}}{d t}=-\sum_{i} \frac{\partial}{\partial v_{i}}\left(f_{\alpha} \frac{\partial h_{\alpha}}{\partial v_{i}}\right)+\frac{1}{2} \sum_{i, j} \frac{\partial^{2}}{\partial v_{i} \partial v_{j}}\left(f_{\alpha} \frac{\partial^{2} g_{\alpha}}{\partial v_{i} \partial v_{j}}\right)\]