On the naturality of the exterior differential.
We give sufficient conditions for the naturallity of the exterior differential under Sobolev mappings. In other words we study the validity of the equation $d\, f^* \alpha = f^*\; d\alpha$ for a smooth form $\alpha$ and a Sobolev map $f$.
Keywords: Differential Forms
Record created on 2009-07-08, modified on 2016-08-08