FunctionalDefaultConvexConjugate.gradient¶

property FunctionalDefaultConvexConjugate.gradient¶

Gradient operator of the functional.

Notes

The operator that corresponds to the mapping

$x \to \nabla f(x)$

where $\nabla f(x)$ is the element used to evaluate derivatives in a direction $d$ by $\langle \nabla f(x), d \rangle$ .