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Maximal monotone operators with non-maximal graphical limit

open access: goldExamples and Counterexamples, 2022
We present a counterexample showing that the graphical limit of maximally monotone operators might not be maximally monotone. We also characterize the directional differentiability of the resolvent of an operator B in terms of existence and maximal ...
Gerd Wachsmuth
doaj   +5 more sources

Learning Maximally Monotone Operators for Image Recovery [PDF]

open access: yesSIAM Journal on Imaging Sciences, 2021
We introduce a new paradigm for solving regularized variational problems. These are typically formulated to address ill-posed inverse problems encountered in signal and image processing. The objective function is traditionally defined by adding a regularization function to a data fit term, which is subsequently minimized by using iterative optimization
Pesquet, Jean-Christophe   +3 more
openaire   +4 more sources

An Extragradient Method and Proximal Point Algorithm for Inverse Strongly Monotone Operators and Maximal Monotone Operators in Banach Spaces

open access: yesFixed Point Theory and Applications, 2009
We introduce an iterative scheme for finding a common element of the solution set of a maximal monotone operator and the solution set of the variational inequality problem for an inverse strongly-monotone operator in a uniformly smooth and uniformly ...
Somyot Plubtieng, Wanna Sriprad
doaj   +2 more sources

Strong Convergence of Monotone Hybrid Method for Maximal Monotone Operators and Hemirelatively Nonexpansive Mappings

open access: yesFixed Point Theory and Applications, 2009
We prove strong convergence theorems for finding a common element of the zero point set of a maximal monotone operator and the fixed point set of a hemirelatively nonexpansive mapping in a Banach space by using monotone hybrid iteration method.
Chakkrid Klin-eam, Suthep Suantai
doaj   +2 more sources

Representable Monotone Operators and Limits of Sequences of Maximal Monotone Operators [PDF]

open access: yesSet-Valued and Variational Analysis, 2011
We show that the lower limit of a sequence of maximal monotone operators on a reflexive Banach space is a representable monotone operator. As a consequence, we obtain that the variational sum of maximal monotone operators and the variational composition of a maximal monotone operator with a linear continuous operator are both representable monotone ...
GarcĂ­a, Yboon, Lassonde, Marc
openaire   +2 more sources

Fixed Points for Discontinuous Monotone Operators

open access: yesFixed Point Theory and Applications, 2010
We obtain some new existence theorems of the maximal and minimal fixed points for discontinuous monotone operator on an order interval in an ordered normed space. Moreover, the maximal and minimal fixed points can be achieved by monotone iterative method
Yujun Cui, Xingqiu Zhang
doaj   +2 more sources

Maximal and minimal weak solutions for elliptic problems with nonlinearity on the boundary

open access: yesElectronic Research Archive, 2022
This paper deals with the existence of weak solutions for semilinear elliptic equation with nonlinearity on the boundary. We establish the existence of a maximal and a minimal weak solution between an ordered pair of sub- and supersolution for both ...
S. Bandyopadhyay   +4 more
doaj   +1 more source

Complete Closedness of Maximal Monotone Operators [PDF]

open access: yesMathematics of Operations Research, 1983
(This paper is dedicated to the memory of Professor Kwan Chao-Chin, former academic member and director of the Institute of System Science of the Academy of Chinese Sciences.) A maximal monotone operator in Rn is completely closed, i.e., not only closed for points, but also closed for directions. Such a completely closed operator is locally bounded at
openaire   +2 more sources

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