# Keyword Analysis & Research: exterior derivative pdf

## Frequently Asked Questions

What is the exterior derivative of a function?

The exterior derivative is defined to be the unique ℝ -linear mapping from k -forms to (k + 1) -forms satisfying the following properties: df is the differential of f , for 0 -forms ( smooth functions) f . d(df ) = 0 for any 0 -form (smooth function) f .

What is the exterior derivative of a smooth vector field?

If f is a smooth function (a 0 -form), then the exterior derivative of f is the differential of f . That is, df is the unique 1 -form such that for every smooth vector field X, df (X) = dX f , where dX f is the directional derivative of f in the direction of X .

How do you find the exterior product of differential forms?

That is, df is the unique 1 -form such that for every smooth vector field X, df (X) = dX f , where dX f is the directional derivative of f in the direction of X . The exterior product of differential forms (denoted with the same symbol ∧) is defined as their pointwise exterior product .

What is the exterior derivative of a differential k-form?

If a differential k -form is thought of as measuring the flux through an infinitesimal k - parallelotope at each point of the manifold, then its exterior derivative can be thought of as measuring the net flux through the boundary of a (k + 1) -parallelotope at each point.