From SATEC @ W. A. Porter C.I.

About

$$\displaystyle \iint_S (\nabla \times \textbf{F}) \cdot d\textbf{S} = \oint_{\partial S} \textbf{F} \cdot d \textbf{r} $$ $$\displaystyle \iiint_V (\nabla \cdot \textbf{F}) \; dV = \iint_{\partial V} \textbf{F} \cdot d\textbf{S} $$