I now present an algebraic technique for
expressing integrals over as surface integrals over
.
This was invented, as far as I am aware, by Mike Haggerty (unpublished),
in response to the ugly
vector algebra performed by Boasman [33] needed
to achieve the result (H.14) in
.
I have generalized this technique to the case of singular matrices,
and to the tensor divergence theorem.