nobody?
Hello. I was asking if there exists a change of variable formula for suraface integrals.
I know that if is the Lebesgue measure in and is a diffeomorphism of open sets of , I can write
.
But if I consider , the p-dimensional Hausdorff measure (p<n), and is a diffeomorphism of two p-manifolds of , does it exist a similar formula? like