1. The problem statement, all variables and given/known data Not going to write out the whole problem (yet). It's a "find the error in the incorrect proof" type of question in a section on curl and divergence. 2. Relevant equations B = [tex]\nabla[/tex]x A is given as an equation of "electromagnetic theory" and used in the proof. It's stated that the error is not in this equation. The other equation used in the proof is Gauss's Law for magnetic fields, but I get that one. 3. The attempt at a solution Haven't really tried; I'd like to know the physical interpretation of the above equation before I start staring at integrals. I just got through electricity and magnetism in my general physics course, but this doesn't look familiar. I'm assuming that A is some type of force field, but what field would satisfy the equation?