Results 61 to 70 of about 49,937 (203)

Multiple-attribute Decision-Making Method under a Single-Valued Neutrosophic Hesitant Fuzzy Environment

open access: yesJournal of Intelligent Systems, 2015
On the basis of the combination of single-valued neutrosophic sets and hesitant fuzzy sets, this article proposes a single-valued neutrosophic hesitant fuzzy set (SVNHFS) as a further generalization of the concepts of fuzzy set, intuitionistic fuzzy set,
Ye Jun
doaj   +1 more source

Hydrogen Production Technologies Evaluation Based on Interval-Valued Intuitionistic Fuzzy Multiattribute Decision Making Method

open access: yesJournal of Applied Mathematics, 2014
We establish a decision making model for evaluating hydrogen production technologies in China, based on interval-valued intuitionistic fuzzy set theory.
Dejian Yu
doaj   +1 more source

Power Aggregation Operators of Interval-Valued Atanassov-Intuitionistic Fuzzy Sets Based on Aczel–Alsina t-Norm and t-Conorm and Their Applications in Decision Making

open access: yesInternational Journal of Computational Intelligence Systems, 2023
Aczel–Alsina t-norm and t-conorm are important t-norm and t-conorm, and they are extended from algebraic t-norm and t-conorm. Obviously, Aczel–Alsina t-norm and t-conorm are more general than some existing t-norm and t-conorm.
Xinming Shi   +3 more
doaj   +1 more source

General algorithm for equilibrium problems and set-valued operators [PDF]

open access: yesFixed Point Theory, 2018
Summary: In this paper, we introduce and study a general algorithm to approximate a common element of the set of solutions of a system of equilibrium problems and the set of common fixed points of an infinite family of quasi-nonexpansive set-valued mappings. We prove strong convergence of such algorithm in a real Hilbert space.
openaire   +2 more sources

Parity and generalized multiplicity [PDF]

open access: yes, 1991
Assuming that X and Y are Banach spaces and that T is a path of linear Fredholm operators with invertible endpoints, in [F-Pl] we defined a homotopy invariant "the parity of T .
Fitzpatrickp.   +2 more
core  

Some remarks on degenerate hypoelliptic Ornstein-Uhlenbeck operators [PDF]

open access: yes, 2014
We study degenerate hypoelliptic Ornstein–Uhlenbeck operators in spaces with respect to invariant measures. The purpose of this article is to show how recent results on general quadratic operators apply to the study of degenerate hypoelliptic Ornstein ...
Pavliotis, Grigorios   +8 more
core   +1 more source

Generalized Implicit Set-Valued Variational Inclusion Problem with ⊕ Operation [PDF]

open access: yesMathematics, 2019
In this paper, we consider a resolvent operator which depends on the composition of two mappings with ⊕ operation. We prove some of the properties of the resolvent operator, that is, that it is single-valued as well as Lipschitz-type-continuous. An existence and convergence result is proven for a generalized implicit set-valued variational inclusion ...
Rais Ahmad   +4 more
openaire   +2 more sources

ON NEMYTSKIJ OPERATOR OF SUBSTITUTION IN THE C1 SPACE OF SET-VALUED FUNCTIONS

open access: yesDemonstratio Mathematica, 2008
AbstractWe consider the Nemytskij operator, i.e., the operator of substitution, defined by (
openaire   +1 more source

Arithmetic operators in interval-valued fuzzy set theory [PDF]

open access: yes, 2007
We introduce the addition, subtraction, multiplication and division on L^I, where L^I is the underlying lattice of both interval-valued fuzzy set theory (R. Sambuc) and intuitionistic fuzzy set theory (K.T. Atanassov).
Deschrijver, Glad
core  

On the Ranges of Nonlinear Set-Valued Accretive Operators in Banach Spaces

open access: yesJournal of Mathematical Analysis and Applications, 1999
The author proves some interesting sufficient conditions in order that a possible multivalued accretive operator acting in a real Banach space be \(m\)-accretive.
openaire   +1 more source

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