Regularization by denoising via fixed-point projection (RED-PRO)

R Cohen, M Elad, P Milanfar - SIAM Journal on Imaging Sciences, 2021 - SIAM
Inverse problems in image processing are typically cast as optimization tasks, consisting of
data fidelity and stabilizing regularization terms. A recent regularization strategy of great …

[PDF][PDF] Implicit iteration process for Lipschitzian α-hemicontraction semigroups

AE Ofem, DI Igbokwe, XA Udo-utun - MathLAB J, 2020 - researchgate.net
In this paper, the concepts of α–demicontractive semigroup and α–hemicontractive
semigroup are considered. We study the strong and weak convergence of an implicit …

Weak -stability and data dependence of Mann iteration method in Hilbert spaces

F Gürsoy, AR Khan, M Ertürk, V Karakaya - Revista de la Real Academia …, 2019 - Springer
We study a weaker and more natural notion of stability called weak w^ 2 w 2-stability to get
an insight in the corresponding results obtained by Măruşter and Măruşter (J Comput Appl …

[PDF][PDF] Strong convergence of the Ishikawa iteration for Lipschitz α-hemicontractive map**s

MO Osilike, AC Onah - Seria Mat. Inform. LIII (1), 2015 - sciendo.com
A new class of α-hemicontractive maps T for which the strong convergence of the Ishikawa
iteration algorithm to a fixed point of T is assured is introduced and studied. The study is a …

Hybrid-type iteration scheme for approximating fixed points of Lipschitz α-hemicontractive map**s

IK Agwu, DI Igbokwe - Adv. Fixed Point Theory, 2020 - scik.org
We propose a two-step iteration Scheme of hybrid-type for α-hemicontractive map**s and
establish some weak and strong convergence theorems of the scheme to the fixed points of …

[HTML][HTML] A Constructive scheme for a common coupled fixed point problems in Hilbert space

KS Kim - Mathematics, 2020 - mdpi.com
Coupled fixed points have become the focus of interest in recent times, especially for their
potential applications. Very recently, the idea of common coupled fixed point iterations has …

[HTML][HTML] On the error estimation and T-stability of the Mann iteration

L Maruster - Journal of Computational and Applied Mathematics, 2015 - Elsevier
A formula of error estimation of Mann iteration is given in the case of strongly
demicontractive map**s. Based on this estimation, a condition of strong convergence is …

Convergence theorems on asymptotically demicontractive and hemicontractivemap**s in the intermediate sense

JO Olaleru, GA Okeke - Fixed Point Theory and Applications, 2013 - Springer
In this study, we introduce two classes of nonlinear map**s, the class ofasymptotically
demicontractive map**s in the intermediate sense andasymptotically hemicontractive …

Approximation of common fixed points of a finite family of total asymptotically demicontraction semigroup

AE Ofem, DI Igbokwe - International Journal of Nonlinear …, 2023 - ijnaa.semnan.ac.ir
The purpose of this article is to introduce an implicit iterative algorithm which contains
several well known existing iterative methods. We study the strong convergence of the …

Novel extended Halpern-type convergence algorithms for the split common fixed point problem involving α-demicontractive operators

HY Xu, HY Lan, Y Zhao, Y Ye - Optimization, 2023 - Taylor & Francis
As is well known, it is quite valuable and challenging to solve the split common fixed point
problem (SCFP) associated with two different nonlinear operators. In this study, in order to …