proximal_const_func

odl.solvers.nonsmooth.proximal_operators.proximal_const_func(space)[source]

Proximal operator factory of the constant functional.

Function to initialize the proximal operator of the constant functional defined on space.

Parameters:
spaceLinearSpace

Domain of the functional G=constant

Returns:
prox_factoryfunction

Factory for the proximal operator to be initialized

Notes

The constant functional G is defind as G(x) = constant for all values of x. The proximal operator of this functional is the identity operator

\mathrm{prox}_{\sigma G}(x) = x

Note that it is independent of \sigma.