Results 21 to 30 of about 18,455 (256)

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

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

Optimality conditions in a class of generalized convex optimization problems with the multiple interval-valued objective function

open access: yesSystems and Soft Computing, 2023
In this paper, a new class of generalized convex optimization problems with a multiple interval-valued objective function is considered. The concepts of B-preinvexity, B-invexity, and the generalized of B-invexity are extended to interval-valued ...
Najeeb Abdulaleem
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.
Guo, Yating   +3 more
openaire   +1 more source

Some New Hermite-Hadamard-Fejér Fractional Type Inequalities for h-Convex and Harmonically h-Convex Interval-Valued Functions

open access: yesMathematics, 2021
In this article, firstly, we establish a novel definition of weighted interval-valued fractional integrals of a function Υ˘ using an another function ϑ(ζ˙).
Humaira Kalsoom   +3 more
doaj   +1 more source

Some Inequalities Related to Interval-Valued ηh-Convex Functions

open access: yesJournal of Mathematics, 2021
Convexity plays an important role in many areas of mathematics, especially in the study of optimization problems where they are distinguished by a number of convenient properties. Our aim is to introduce a more extended version of convexity.
Lei Chen   +3 more
doaj   +1 more source

Hermite-Hadamard and Schur-Type Inequalities for Strongly h-Convex Fuzzy Interval Valued Functions

open access: yesJournal of Function Spaces, 2022
The concept of fuzzy theory was developed in 1965 and becomes an acknowledged research subject in both pure and applied mathematics and statistics, showing how this theory is highly applicable and productive in many applications. In the present study, we
Putian Yang, Shiqing Zhang
doaj   +1 more source

On comonotonically additive interval-valued functionals and interval-valued Choquet integrals(II) [PDF]

open access: yesJournal of Korean Institute of Intelligent Systems, 2004
In this paper, we will define comonotonically additive interval-valued functionals which are generalized comonotonically additive real-valued functionals in Schmeidler[14] and Narukawa[12], and prove some properties of them. And we also investigate some relations between comonotonically additive interval-valued functionals and interval-valued Choquet ...
Lee-Chae Jang   +2 more
openaire   +1 more source

On the Hermite–Hadamard inequalities for interval-valued coordinated convex functions

open access: yesAdvances in Difference Equations, 2020
In this work, we introduce the notion of interval-valued coordinated convexity and demonstrate Hermite–Hadamard type inequalities for interval-valued convex functions on the co-ordinates in a rectangle from the plane.
Dafang Zhao   +3 more
doaj   +1 more source

Fuzzy BCI-subalgebras with interval-valued membership functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
The purpose of this paper is to define the notion of an interval-valued fuzzy BCI-subalgebra (briefly, an i-v fuzzy BCI-subalgebra) of a BCI-algebra. Necessary and sufficient conditions for an i-v fuzzy set to be an i-v fuzzy BCI-subalgebra are stated. A
Sung Min Hong   +3 more
doaj   +1 more source

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