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Bibliographic Details
Main Author: Stan, Andrei
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2512.05426
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author Stan, Andrei
author_facet Stan, Andrei
contents In this paper, we present two abstract methods for constructing a lower and an upper solution for a fixed point equation. The first method applies when the nonlinear operator is a composition of a linear and a nonlinear mapping, while the second method applies when the nonlinear operator satisfies an inequality of Harnack type. An application is provided for each method.
format Preprint
id arxiv_https___arxiv_org_abs_2512_05426
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Two abstract methods of lower and upper solutions with applications
Stan, Andrei
Functional Analysis
In this paper, we present two abstract methods for constructing a lower and an upper solution for a fixed point equation. The first method applies when the nonlinear operator is a composition of a linear and a nonlinear mapping, while the second method applies when the nonlinear operator satisfies an inequality of Harnack type. An application is provided for each method.
title Two abstract methods of lower and upper solutions with applications
topic Functional Analysis
url https://arxiv.org/abs/2512.05426