Results 1 to 10 of about 179,622 (147)

The norm of continuous linear operator between two fuzzy quasi-normed spaces

open access: yesAIMS Mathematics, 2022
In this paper, firstly, we introduce the concepts of continuity and boundedness of linear operators between two fuzzy quasi-normed spaces with general continuous t-norms, prove the equivalence of them, and point out that the set of all continuous linear ...
Han Wang, Jianrong Wu
doaj   +1 more source

Fuzzy Operator Ideals

open access: yesJournal of Applied Science and Engineering, 2022
Although the systematic emergence of the fuzzy functional analysis theory has started in the last few years, we are starting to construct a new theory of fuzzy operator ideals inspired by the classical (crisp) operator ideals theory.
Laith K. Shaakir   +2 more
doaj   +1 more source

Formation of a knowledge base to analyze the issue of transport and the environment [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2020
The environmental impact of transport is significant because transport is a significant user of energy, and burns most of the world's petroleum. This issue creates air pollution, including nitrous oxides and particulates, and is a substantial contributor
Ilyas Idrisovich Ismagilov   +4 more
doaj   +1 more source

Evaluation of nine distance-based measures of functional diversity applied to forest communities [PDF]

open access: yesAnnals of Forest Research, 2013
Several methods for the estimation of functional diversity are employed in plant communities. However, it is hard to select the most suitable measures in practice.
Jin-Tun Zhang, Naiqi Song, Lihong Fan
doaj   +3 more sources

Controllability of Fuzzy Solutions for Neutral Impulsive Functional Differential Equations with Nonlocal Conditions

open access: yesAxioms, 2021
In this paper, the controllability of fuzzy solutions for first order nonlocal impulsive neutral functional differential equations is explored using the Banach fixed point theorem.
Falguni Acharya   +3 more
doaj   +1 more source

Fuzzy Continuous Mappings on Fuzzy F-Spaces

open access: yesMathematics, 2022
In the present paper, we first introduce different types of fuzzy continuity for mappings between fuzzy F-normed linear spaces and the relations between them are investigated.
Sorin Nădăban
doaj   +1 more source

Fuzzy Implication and Functional Dependency on Formal Context

open access: yesJurnal Matematika Integratif, 2020
Fuzzy formal concept analysis(FFCA) is a development of formal concept analysis(FCA) with the degree of relation between objects and attributes. Using FCA approach, we will investigate the condition logical implication for fuzzy functional dependency. We
Mohammad Deni Akbar, Yoshihiro Mizoguchi
doaj   +1 more source

Study of Non-Linear Impulsive Neutral Fuzzy Delay Differential Equations with Non-Local Conditions

open access: yesMathematics, 2023
This manuscript aims to investigate the existence and uniqueness of fuzzy mild solutions for non-local impulsive neutral functional differential equations of both first and second order, incorporating finite delay.
Tharmalingam Gunasekar   +5 more
doaj   +1 more source

Stabilities of Cubic Mappings in Fuzzy Normed Spaces

open access: yesAdvances in Difference Equations, 2010
Rassias(2001) introduced the pioneering cubic functional equation in the history of mathematical analysis: and solved the pertinent famous Ulam stability problem for this inspiring equation.
Ghaffari Ali, Alinejad Ahmad
doaj   +2 more sources

Existence and total controllability results of fuzzy delay differential equation with non-instantaneous impulses

open access: yesAlexandria Engineering Journal, 2021
In this work, we consider a fuzzy delay differential system with non-instantaneous impulses and investigate the existence, uniqueness and total controllability results.
Anil Kumar   +2 more
doaj   +1 more source

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