div grad curl and all that, 3rd Ed.
DIVERGENCE THEOREM
\begin{equation} \iint_S F\cdot\hat{n}dS=\iiint_V\nabla\cdot F dV \end{equation}
STOKES’ THEOREM
\begin{equation} \oint_C F \cdot \hat{t} ds = \iint_S \hat{n} \cdot \nabla \times F ds \end{equation}