Results 11 to 20 of about 30,455 (266)

Ekeland’s variational principle for interval-valued functions

open access: yesComputational and Applied Mathematics, 2023
In this paper, we attempt to propose Ekeland's variational principle for interval-valued functions (IVFs). To develop the variational principle, we study the concept of sequence of intervals. In the sequel, the idea of gH-semicontinuity for IVFs is explored.
Gourav Kumar, Debdas Ghosh
openaire   +3 more sources

An Algebraic Approach to Modular Inequalities Based on Interval-Valued Fuzzy Hypersoft Sets via Hypersoft Set-Inclusions

open access: yesJournal of Function Spaces, 2022
Interval-valued fuzzy hypersoft set is an emerging field of study which is projected to address the limitations of interval-valued fuzzy soft set for the entitlement of multiargument approximate function.
Atiqe Ur Rahman   +4 more
doaj   +1 more source

Constructive Approximation of Continuous Interval-Valued Functions

open access: yesNumerical Functional Analysis and Optimization, 2021
In this paper we present a Stone-Weierstrass type result in the context of continuous interval-valued functions defined on a compact Hausdorff space. Namely, we provide a constructive proof of the approximation.
Juan J. Font, Sergio Macario
openaire   +3 more sources

Membership Score of an Interval-Valued Pythagorean Fuzzy Numbers and Its Applications

open access: yesIEEE Access, 2023
The main aim of the paper is to define a new Membership score function on the class of interval-valued Pythagorean fuzzy numbers, which can overcome the drawbacks of existing familiar ranking methods.
Melfi A. Alrasheedi, S. Jeevaraj
doaj   +1 more source

Soft Subring Theory Under Interval-valued Neutrosophic Environment [PDF]

open access: yesNeutrosophic Sets and Systems, 2020
The primary goal of this article is to establish and investigate the idea of interval-valued neutrosophic soft subring. Again, we have introduced function under interval-valued neutrosophic soft environment and investigated some of its homomorphic ...
Sudipta Gayen   +5 more
doaj   +1 more source

gH-Symmetrically Derivative of Interval-Valued Functions and Applications in Interval-Valued Optimization [PDF]

open access: yesSymmetry, 2019
In this paper, we present the gH-symmetrical derivative of interval-valued functions and its properties. In application, we apply this new derivative to investigate the Karush–Kuhn–Tucker (KKT) conditions of interval-valued optimization problems. Meanwhile, some examples are worked out to illuminate the obtained results.
Yating Guo   +3 more
openaire   +1 more source

Functional linear models for interval-valued data [PDF]

open access: yesCommunications in Statistics - Simulation and Computation, 2020
Aggregation of large databases in a specific format is a frequently used process to make the data easily manageable. Interval-valued data is one of the data types that is generated by such an aggregation process. Using traditional methods to analyze interval-valued data results in loss of information, and thus, several interval-valued data models have ...
Ufuk Beyaztas   +2 more
openaire   +4 more sources

Hermite–Hadamard-type inequalities for interval-valued preinvex functions via Riemann–Liouville fractional integrals

open access: yesJournal of Inequalities and Applications, 2021
In this paper, we introduce ( h 1 , h 2 ) $(h_{1},h_{2})$ -preinvex interval-valued function and establish the Hermite–Hadamard inequality for preinvex interval-valued functions by using interval-valued Riemann–Liouville fractional integrals.
Nidhi Sharma   +3 more
doaj   +1 more source

AN IMPROVED METHODOLOGY FOR MULTI-CRITERIA EVALUATIONS IN THE SHIPPING INDUSTRY

open access: yesBrodogradnja, 2016
This paper presents a reliable, easy and more objective approach for ranking and determining preference in a multi-criteria decision-making problem within the shipping industry.
Daniel Osezua Aikhuele   +1 more
doaj   +1 more source

Width-Based Interval-Valued Distances and Fuzzy Entropies

open access: yesIEEE Access, 2019
In this paper, we study distance measures between interval-valued fuzzy sets and entropies of interval-valued fuzzy sets. These are well-known and widely used notions in the fuzzy sets theory.
Zdenko Takac   +4 more
doaj   +1 more source

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