A product of strongly quasi-nonexpansive mappings in Hadamard spaces

Fuente: arXiv
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Main Authors: Worapitpong, Wiparat, Chaipunya, Parin, Kumam, Poom, Termkaew, Sakan
Format: Preprint
Published: 2025
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author Worapitpong, Wiparat
Chaipunya, Parin
Kumam, Poom
Termkaew, Sakan
author_facet Worapitpong, Wiparat
Chaipunya, Parin
Kumam, Poom
Termkaew, Sakan
contents In this paper, we prove that the product of strongly quasi-nonexpansive $Δ$-demiclosed mappings is also a strongly quasi-nonexpansive orbital $Δ$-demiclosed mapping in Hadamard spaces. Additionally, we establish the $Δ$-convergence theorem for approximating a common fixed point of infinite products of these mappings in Hadamard spaces. Our results have practical applications in convex function minimization, the minimization of the sum of finitely many convex functions, and solving the convex feasibility problem for finitely many sets in Hadamard spaces.
format Preprint
id arxiv_https___arxiv_org_abs_2504_21402
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle A product of strongly quasi-nonexpansive mappings in Hadamard spaces
Worapitpong, Wiparat
Chaipunya, Parin
Kumam, Poom
Termkaew, Sakan
Functional Analysis
In this paper, we prove that the product of strongly quasi-nonexpansive $Δ$-demiclosed mappings is also a strongly quasi-nonexpansive orbital $Δ$-demiclosed mapping in Hadamard spaces. Additionally, we establish the $Δ$-convergence theorem for approximating a common fixed point of infinite products of these mappings in Hadamard spaces. Our results have practical applications in convex function minimization, the minimization of the sum of finitely many convex functions, and solving the convex feasibility problem for finitely many sets in Hadamard spaces.
title A product of strongly quasi-nonexpansive mappings in Hadamard spaces
topic Functional Analysis
url https://arxiv.org/abs/2504.21402