Results 21 to 30 of about 41,052 (118)

Fuzzy soft set theory applied to medical diagnosis using fuzzy arithmetic operations

open access: yes, 2013
In this paper, we apply fuzzy soft set theory through well-known Sanchez’s approach for medical diagnosis using fuzzy arithmetic operations and exhibit the technique with a hypothetical case study.AMS Subject Classification:03E72, 92C50.
Yıldıray Çelik, S. Yamak
semanticscholar   +1 more source

On Cauchy problems for fuzzy differential equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 15, Page 799-805, 2004., 2004
Existence and uniqueness theorems are proved for Cauchy problems of second‐order fuzzy differential equations.
D. N. Georgiou, I. E. Kougias
wiley   +1 more source

Interval-Valued Fuzzy Soft Graphs

open access: yesTopological Algebra and its Applications, 2017
In this paper, we combine concepts of interval-valued fuzzy soft sets and graph theory. Then we introduce notations of interval-valued fuzzy soft graphs and complete interval-valued fuzzy soft graphs.
Zihni Onur   +2 more
doaj   +1 more source

On Lr-norm-based derivatives and fuzzy Henstock-Kurzweil integrals with an application

open access: yesAlexandria Engineering Journal, 2023
The fundamental theorem of calculus not only plays an important role in the study of differential equation theory, but also in many practical problems solving.
Yabin Shao, Yubing Li, Zengtai Gong
doaj   +1 more source

On Krull′s intersection theorem of fuzzy ideals

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 4, Page 251-262, 2003., 2003
We deal with Krull′s intersection theorem on the ideals of a commutative Noetherian ring in the fuzzy setting. We first characterise products of finitely generated fuzzy ideals in terms of fuzzy points. Then, we study the question of uniqueness and existence of primary decompositions of fuzzy ideals.
V. Murali, B. B. Makamba
wiley   +1 more source

Many-Valued Logic and Zadeh’s Fuzzy Sets: A Stone Representation Theorem for Interval-Valued Łukasiewicz–Moisil Algebras

open access: yesJournal of Intelligent Systems, 2016
The aim of this article is to develop a representation theory of interval-valued Łukasiewicz–Moisil algebras; the concept of interval fuzzy sets involves the role that the notion of field of sets plays for the representation of Boolean algebras.
Amroune Abdelaziz   +2 more
doaj   +1 more source

On fuzzy subbundles of vector bundles

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 40, Page 2553-2565, 2003., 2003
This paper considers fuzzy subbundles of a vector bundle. We define the operations sum, product, tensor product, Hom, and intersection of fuzzy subbundles and in each case, we characterize the corresponding flag of vector subbundles. We then propose two alternative definitions of integrability on fuzzy subbundles of a given type and discuss their ...
V. Murali, G. Lubczonok
wiley   +1 more source

Incomplete Fermatean fuzzy preference relations and group decision-making

open access: yesTopological Algebra and its Applications, 2023
There may be cases where experts do not have in-depth knowledge of the problem to be solved in decision-making problems. In such cases, experts may fail to express their views on certain aspects of the problem, resulting in incomplete preferences, in ...
Şimşek Necip, Kirişci Murat
doaj   +1 more source

On an equivalence of fuzzy subgroups III

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 36, Page 2303-2313, 2003., 2003
This paper is the third in a series of papers studying equivalence classes of fuzzy subgroups of a given group under a suitable equivalence relation. We introduce the notion of a pinned flag in order to study the operations sum, intersection and union, and their behavior with respect to the equivalence.
V. Murali, B. B. Makamba
wiley   +1 more source

Fuzzy soft set approach to ideal theory of regular AG-groupoids

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
This paper aims to apply fuzzy sets and soft sets in combination to investigate algebraic properties of regular AG-groupoids. We initiate (∈γ; ∈γ qδ)-fuzzy soft left ideals (right ideals, bi-ideals and quasi-ideals) over AG-groupoids and explore some ...
Feng Feng   +4 more
doaj   +1 more source

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