proximal_linfty

odl.solvers.nonsmooth.proximal_operators.proximal_linfty(space)

Proximal operator factory of the l_\infty-norm.

Function for the proximal operator of the functional F where F is the l_\infty-norm:

``F(x) =  \sup_i |x_i|``

Parameters:

spaceLinearSpace

Domain of F.

Returns:

prox_factorycallable

Factory for the proximal operator to be initialized.

See also

proj_l1

projection onto l1-ball

Notes

The proximal is computed by the Moreau identity and a projection onto an l1-ball [PB2014].