Articles with "fuzzy number" as a keyword



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Analyzing an inventory model with two-level trade credit period including the effect of customers’ credit on the demand function using q-fuzzy number

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Published in 2020 at "Operational Research"

DOI: 10.1007/s12351-018-0391-4

Abstract: In this paper, an EOQ model for deteriorating items has been developed in infinite time horizon including two-level delay in payment in which one delay in payment (M) is offered to the retailer by the… read more here.

Keywords: fuzzy number; credit period; retailer; credit ... See more keywords

Interval fuzzy number-based approach for modeling an uncertain fuzzy yield learning process

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Published in 2020 at "Journal of Ambient Intelligence and Humanized Computing"

DOI: 10.1007/s12652-019-01302-5

Abstract: An interval fuzzy number-based approach was proposed in this study to model an uncertain yield learning process. The study aimed to overcome the limitations of present methods, wherein the lower and upper bounds of the… read more here.

Keywords: number based; yield; fuzzy number; based approach ... See more keywords
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Fuzzy reliability of a turbines structure system using the right triangular fuzzy number

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Published in 2021 at "Journal of Quality in Maintenance Engineering"

DOI: 10.1108/jqme-02-2021-0017

Abstract: PurposeThe purpose of this paper is to investigate the performance of a turbine structure of the oil and gas Egyptian company in terms of reliability, mean time to failure (MTTF), mean time to repair (MTTR)… read more here.

Keywords: system; right triangular; paper; fuzzy number ... See more keywords
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Graphic Representation of a Dimensional Expansion of Triangular Fuzzy Number

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Published in 2021 at "Journal of Mathematics"

DOI: 10.1155/2021/1970553

Abstract: We calculate Zadeh’s max-min composition operators for two 3-dimensional triangular fuzzy numbers. We prove that if the 3-dimensional result is limited to 2 dimensions, it is the same as the 2-dimensional result, which is shown… read more here.

Keywords: fuzzy; value; triangular fuzzy; fuzzy number ... See more keywords
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Forecasting ASEAN countries exchange rates using auto regression model based on triangular fuzzy number

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Published in 2019 at "Indonesian Journal of Electrical Engineering and Computer Science"

DOI: 10.11591/ijeecs.v14.i3.pp1525-1532

Abstract: Exchange rate forecasting is important to represent the expectation of exchange rates future values. The forecasting task is due to the economic factor and the historical data used to forecast are exposed to uncertainty and… read more here.

Keywords: exchange rates; model; fuzzy number; data preparation ... See more keywords
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Modified Block Homotopy Perturbation Method for solving triangular linear Diophantine fuzzy system of equations

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Published in 2023 at "Advances in Mechanical Engineering"

DOI: 10.1177/16878132231159519

Abstract: Numerous real-world applications can be solved using the broadly adopted notions of intuitionistic fuzzy sets, Pythagorean fuzzy sets, and q-rung orthopair fuzzy sets. These theories, however, have their own restrictions in terms of membership and… read more here.

Keywords: triangular linear; linear diophantine; fuzzy number; number ... See more keywords
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Up and Down h-Pre-Invex Fuzzy-Number Valued Mappings and Some Certain Fuzzy Integral Inequalities

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Published in 2022 at "Axioms"

DOI: 10.3390/axioms12010001

Abstract: The objective of the current paper is to incorporate the new class and concepts of convexity and Hermite–Hadamard inequality with the fuzzy Riemann integral operators because almost all classical single-valued and interval-valued convex functions are… read more here.

Keywords: pre invex; fuzzy number; number valued; invex fuzzy ... See more keywords
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Properties of Convex Fuzzy-Number-Valued Functions on Harmonic Convex Set in the Second Sense and Related Inequalities via Up and Down Fuzzy Relation

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Published in 2023 at "Axioms"

DOI: 10.3390/axioms12040399

Abstract: In this paper, we provide different variants of the Hermite–Hadamard (H⋅H) inequality using the concept of a new class of convex mappings, which is referred to as up and down harmonically s-convex fuzzy-number-valued functions (UDH s-convex… read more here.

Keywords: second sense; fuzzy number; convex fuzzy; number valued ... See more keywords

Study of Log Convex Mappings in Fuzzy Aunnam Calculus via Fuzzy Inclusion Relation over Fuzzy-Number Space

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Published in 2023 at "Mathematics"

DOI: 10.3390/math11092043

Abstract: In this paper, with the use of newly defined class up and down log–convex fuzzy-number valued mappings, we offer a few new and original mappings defined by applying some mild restrictions over the definition of… read more here.

Keywords: study log; fuzzy number; log convex; convex mappings ... See more keywords
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Some Fuzzy Inequalities for Harmonically s-Convex Fuzzy Number Valued Functions in the Second Sense Integral

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Published in 2022 at "Symmetry"

DOI: 10.3390/sym14081639

Abstract: Many fields of mathematics rely on convexity and nonconvexity, especially when studying optimization issues, where it stands out for a variety of practical aspects. Owing to the behavior of its definition, the idea of convexity… read more here.

Keywords: fuzzy number; number valued; valued functions; convexity ... See more keywords
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New Class Up and Down Pre-Invex Fuzzy Number Valued Mappings and Related Inequalities via Fuzzy Riemann Integrals

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Published in 2022 at "Symmetry"

DOI: 10.3390/sym14112322

Abstract: Numerous applications of the theory of convex and nonconvex mapping exist in the fields of applied mathematics and engineering. In this paper, we have defined a new class of nonconvex functions which is known as… read more here.

Keywords: pre invex; fuzzy number; number; number valued ... See more keywords