Results 131 to 140 of about 2,024 (222)

Variational properties of the abstract subdifferential operator

open access: yes
convexity generalises classical convexity by considering the suprema of functions taken from an arbitrarily defined set of functions. These are called the abstract linear (abstract affine) functions.
Ugon, Julien   +2 more
core  

A new representation of a proximal subdifferential by employing a directional derivative

open access: yes, 2011
Natural Science Foundation of Fujian Province of China [2010J05013]In this paper, a new representation of the proximal subdifferential of a nonsmooth function is presented by using a directional derivative.
Li, An, 李安
core  

Off-the-grid regularisation for Poisson inverse problems. [PDF]

open access: yesComput Optim Appl
Lazzaretti M   +3 more
europepmc   +1 more source

Subdifferentiation with symmetry

open access: yes
Given an objective function that is invariant under an action of a Lie group, we study how its subgradients relate to the orbits of the action. Our main finding is that they satisfy projection formulae analogous to those stemming from the Whitney and Verdier stratifications. If the function is definable in an o-minimal structure on the real field, then
openaire   +2 more sources

Variable Smoothing for Weakly Convex Composite Functions. [PDF]

open access: yesJ Optim Theory Appl, 2021
Böhm A, Wright SJ.
europepmc   +1 more source

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