Where R is some region of 3-space, S is the boundary surface of R, the triple integral denotes volume integration over R with dV as the volume element, and the double integral denotes surface integration over S with <math>\vec{\mathrm{d}A}</math> as the oriented normal of the surface element. The <math>\nabla \cdot</math> on the left side is the [[divergence]] operator, and the <math>\cdot</math> on the right side is the vector [[inner product|dot product]]. | Where R is some region of 3-space, S is the boundary surface of R, the triple integral denotes volume integration over R with dV as the volume element, and the double integral denotes surface integration over S with <math>\vec{\mathrm{d}A}</math> as the oriented normal of the surface element. The <math>\nabla \cdot</math> on the left side is the [[divergence]] operator, and the <math>\cdot</math> on the right side is the vector [[inner product|dot product]]. |