This post is in regards higher dimensional partial integration, a topic of vector calculus. Here I show a quick and non-formal way of integrating by parts in higher dimensions.
Consider the volume integration over omega which is bounded by the manifold gamma. Omega is assumed an open bounded subset of R^n, and gamma assumed a piecewise smooth boundary. These assumptions are required by Stoke's theorem.
First apply the product rule under the integral.
Second, use Stoke's theorem to evaluate the volume integral
Here, the surface integral is projected against the outward facing normal, g-hat. The right hand side...