On solving pseudomonotone equilibrium problems via two new extragradient-type methods under convex constraints

The primary objective of this study is to develop two new proximal-type algorithms for solving equilibrium problems in real Hilbert space. Both new algorithms are analogous to the well-known two-step extragradient algorithm for solving the variational inequality problem in Hilbert spaces. The propos...

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Main Authors: Khunpanuk Chainarong, Pakkaranang Nuttapol, Pholasa Nattawut
Format: Article
Language:English
Published: De Gruyter 2022-08-01
Series:Demonstratio Mathematica
Subjects:
Online Access:https://doi.org/10.1515/dema-2022-0025
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author Khunpanuk Chainarong
Pakkaranang Nuttapol
Pholasa Nattawut
author_facet Khunpanuk Chainarong
Pakkaranang Nuttapol
Pholasa Nattawut
author_sort Khunpanuk Chainarong
collection DOAJ
description The primary objective of this study is to develop two new proximal-type algorithms for solving equilibrium problems in real Hilbert space. Both new algorithms are analogous to the well-known two-step extragradient algorithm for solving the variational inequality problem in Hilbert spaces. The proposed iterative algorithms use a new step size rule based on local bifunction information instead of the line search technique. Two weak convergence theorems for both algorithms are well-established by letting mild conditions. The main results are used to solve the fixed point and variational inequality problems. Finally, we present several computational experiments to demonstrate the efficiency and effectiveness of the proposed algorithms.
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spelling doaj.art-a5334b97f35b483d95f2f6c9a37c6b012022-12-22T02:02:37ZengDe GruyterDemonstratio Mathematica2391-46612022-08-0155129731410.1515/dema-2022-0025On solving pseudomonotone equilibrium problems via two new extragradient-type methods under convex constraintsKhunpanuk Chainarong0Pakkaranang Nuttapol1Pholasa Nattawut2Mathematics and Computing Science Program, Faculty of Science and Technology, Phetchabun Rajabhat University, Phetchabun 67000, ThailandMathematics and Computing Science Program, Faculty of Science and Technology, Phetchabun Rajabhat University, Phetchabun 67000, ThailandSchool of Science, University of Phayao, Phayao 56000, ThailandThe primary objective of this study is to develop two new proximal-type algorithms for solving equilibrium problems in real Hilbert space. Both new algorithms are analogous to the well-known two-step extragradient algorithm for solving the variational inequality problem in Hilbert spaces. The proposed iterative algorithms use a new step size rule based on local bifunction information instead of the line search technique. Two weak convergence theorems for both algorithms are well-established by letting mild conditions. The main results are used to solve the fixed point and variational inequality problems. Finally, we present several computational experiments to demonstrate the efficiency and effectiveness of the proposed algorithms.https://doi.org/10.1515/dema-2022-0025equilibrium problemlipschitz-type continuousweak convergence theorempseudomonotone bifunctionproximal algorithm47h0647h0947j0547j25
spellingShingle Khunpanuk Chainarong
Pakkaranang Nuttapol
Pholasa Nattawut
On solving pseudomonotone equilibrium problems via two new extragradient-type methods under convex constraints
Demonstratio Mathematica
equilibrium problem
lipschitz-type continuous
weak convergence theorem
pseudomonotone bifunction
proximal algorithm
47h06
47h09
47j05
47j25
title On solving pseudomonotone equilibrium problems via two new extragradient-type methods under convex constraints
title_full On solving pseudomonotone equilibrium problems via two new extragradient-type methods under convex constraints
title_fullStr On solving pseudomonotone equilibrium problems via two new extragradient-type methods under convex constraints
title_full_unstemmed On solving pseudomonotone equilibrium problems via two new extragradient-type methods under convex constraints
title_short On solving pseudomonotone equilibrium problems via two new extragradient-type methods under convex constraints
title_sort on solving pseudomonotone equilibrium problems via two new extragradient type methods under convex constraints
topic equilibrium problem
lipschitz-type continuous
weak convergence theorem
pseudomonotone bifunction
proximal algorithm
47h06
47h09
47j05
47j25
url https://doi.org/10.1515/dema-2022-0025
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AT pakkaranangnuttapol onsolvingpseudomonotoneequilibriumproblemsviatwonewextragradienttypemethodsunderconvexconstraints
AT pholasanattawut onsolvingpseudomonotoneequilibriumproblemsviatwonewextragradienttypemethodsunderconvexconstraints