On Fuzzy Differential Inequalities with Upper and Lower Solutions

In this article, by using the technique of upper and lower solutions, some comparison results for first-order fuzzy differential equations are established. Hukuhara derivative, Hukuhara difference, and partial orderings are used for proving theorems. We extend our results to initial time difference...

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Main Authors: Ali Yakar, Seda Çağlak
Format: Article
Language:English
Published: Naim Çağman 2021-12-01
Series:Journal of New Theory
Subjects:
Online Access:https://dergipark.org.tr/en/download/article-file/2123103
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author Ali Yakar
Seda Çağlak
author_facet Ali Yakar
Seda Çağlak
author_sort Ali Yakar
collection DOAJ
description In this article, by using the technique of upper and lower solutions, some comparison results for first-order fuzzy differential equations are established. Hukuhara derivative, Hukuhara difference, and partial orderings are used for proving theorems. We extend our results to initial time difference case as well. Also, the practicality of these comparison results is demonstrated by giving an example.
format Article
id doaj-art-8b1d4de6243c40b3b7d3df313f3cdc28
institution DOAJ
issn 2149-1402
language English
publishDate 2021-12-01
publisher Naim Çağman
record_format Article
series Journal of New Theory
spelling doaj-art-8b1d4de6243c40b3b7d3df313f3cdc282025-08-20T02:45:06ZengNaim ÇağmanJournal of New Theory2149-14022021-12-0137687510.53570/jnt.10344522425On Fuzzy Differential Inequalities with Upper and Lower SolutionsAli Yakar0https://orcid.org/0000-0003-1160-577XSeda Çağlak1https://orcid.org/0000-0003-3888-211XTOKAT GAZİOSMANPAŞA ÜNİVERSİTESİGaziosmanpaşa ÜniversitesiIn this article, by using the technique of upper and lower solutions, some comparison results for first-order fuzzy differential equations are established. Hukuhara derivative, Hukuhara difference, and partial orderings are used for proving theorems. We extend our results to initial time difference case as well. Also, the practicality of these comparison results is demonstrated by giving an example.https://dergipark.org.tr/en/download/article-file/2123103fuzzy numberupper and lower solutionshukuhara derivative
spellingShingle Ali Yakar
Seda Çağlak
On Fuzzy Differential Inequalities with Upper and Lower Solutions
Journal of New Theory
fuzzy number
upper and lower solutions
hukuhara derivative
title On Fuzzy Differential Inequalities with Upper and Lower Solutions
title_full On Fuzzy Differential Inequalities with Upper and Lower Solutions
title_fullStr On Fuzzy Differential Inequalities with Upper and Lower Solutions
title_full_unstemmed On Fuzzy Differential Inequalities with Upper and Lower Solutions
title_short On Fuzzy Differential Inequalities with Upper and Lower Solutions
title_sort on fuzzy differential inequalities with upper and lower solutions
topic fuzzy number
upper and lower solutions
hukuhara derivative
url https://dergipark.org.tr/en/download/article-file/2123103
work_keys_str_mv AT aliyakar onfuzzydifferentialinequalitieswithupperandlowersolutions
AT sedacaglak onfuzzydifferentialinequalitieswithupperandlowersolutions