Results 31 to 40 of about 40,479 (96)

A new approach for studying fuzzy functional equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 28, Issue 12, Page 733-741, 2001., 2001
We define the concept of a “largest” and a “smallest” solution to an underlying equation and then show that a fuzzy solution of the corresponding fuzzy equation is bounded above and below by these solutions, respectively.
Elias Deeba, Andre De Korvin
wiley   +1 more source

Weak-hyperlattices derived from fuzzy congruences

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2017
In this paper we explore the connections between fuzzy congruence relations, fuzzy ideals and homomorphisms of hyperlattices. Indeed, we introduce the concept of fuzzy quotient set of hyperlattices as it was done in the case of rings [19].
Koguep Blériot Blaise Njionou   +1 more
doaj   +1 more source

On the convergence of sequences in ℝ+ through weighted geometric means via multiplicative calculus and application to intuitionistic fuzzy numbers

open access: yesJournal of Taibah University for Science, 2022
We define weighted geometric mean method of convergence for sequences in [Formula: see text] by using multiplicative calculus and obtain necessary and sufficient conditions under which convergence of sequences in [Formula: see text] follows from ...
Enes Yavuz
doaj   +1 more source

Intuitionistic fuzzy interior ideals of semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 27, Issue 5, Page 261-267, 2001., 2001
We consider the intuitionistic fuzzification of the concept of interior ideals in a semigroup S, and investigate some properties of such ideals. For any homomorphism f from a semigroup S to a semigroup T, if B = (μB, γB) is an intuitionistic fuzzy interior ideal of T, then the preimage f−1(B) = (f−1(μB), f−1(γB)) of B under f is an intuitionistic fuzzy
Kyung Ho Kim, Young Bae Jun
wiley   +1 more source

Aggregating Fuzzy Binary Relations and Fuzzy Filters

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2018
The main goal of this paper is to investigate the aggregation of diverse families of binary fuzzy relations, fuzzy filters, and fuzzy lattices. Some links between these families and their images via an aggregation are explored.
Amroune Abdelaziz, Aissa Bouad
doaj   +1 more source

The idempotent Radon--Nikodym theorem has a converse statement

open access: yes, 2013
Idempotent integration is an analogue of the Lebesgue integration where $\sigma$-additive measures are replaced by $\sigma$-maxitive measures. It has proved useful in many areas of mathematics such as fuzzy set theory, optimization, idempotent analysis ...
Poncet, Paul
core   +3 more sources

Vector‐valued fuzzy multifunctions

open access: yesInternational Journal of Stochastic Analysis, Volume 14, Issue 3, Page 275-282, 2001., 2001
Some of the properties of vector‐valued fuzzy multifunctions are studied. The notion of sum fuzzy multifunction, convex hull fuzzy multifunction, close convex hull fuzzy multifunction, and upper demicontinuous are given, and some of the properties of these fuzzy multifunctions are investigated.
Ismat Beg
wiley   +1 more source

Qualitative Behavior of Bidimensional Rational Fuzzy Difference Equations

open access: yesAbstract and Applied Analysis
MSC2020 Classification:03E72, 39A10 ...
Najmeddine Attia, Ahmed Ghezal
doaj   +1 more source

Multi-criteria decision-making based on Pythagorean cubic fuzzy Einstein aggregation operators for investment management

open access: yesAIMS Mathematics, 2023
Pythagorean cubic fuzzy sets (PCFSs) are a more advanced version of interval-valued Pythagorean fuzzy sets where membership and non-membership are depicted using cubic sets.
Esmail Hassan Abdullatif Al-Sabri   +6 more
doaj   +1 more source

Pettis integrability of fuzzy mappings with values in arbitrary Banach spaces

open access: yes, 2017
In this paper we study the Pettis integral of fuzzy mappings in arbitrary Banach spaces. We present some properties of the Pettis integral of fuzzy mappings and we give conditions under which a scalarly integrable fuzzy mapping is Pettis ...
Di Piazza, L., Marraffa, V.
core   +1 more source

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