نتایج جستجو برای: Fuzzy number

تعداد نتایج: 1249424

## solving fully fuzzy linear programming problems with zero-one variables by ranking function

Journal: :biquarterly journal of control and optimization in applied mathematics 2015
aminalah alba

jahanshahloo has suggested a method for the solving linear programming problems with zero-one variables‎. ‎in this paper we formulate fully fuzzy linear programming problems with zero-one variables and a method for solving these problems is presented using the ranking function and also the branch and bound method along with an example is presented.

## deriving fuzzy inequalities using discrete approximation of fuzzy numbers

Journal: :international journal of industrial engineering and productional research- 0
navid khademi département economie-gestion, ecole normale supérieure de cachan, france afshin shariat mohaymany iran university of science and technology jalil shahi iran university of science and technology mojtaba rajabi iran university of science and technology

most of the researches in the domain of fuzzy number comparisons serve the fuzzy number ordering purpose. for making a comparison between two fuzzy numbers, beyond the determination of their order, it is needed to derive the magnitude of their order. in line with this idea, the concept of inequality is no longer crisp however it becomes fuzzy in the sense of representing partial belonging or de...

## on felbin’s-type fuzzy normed linear spaces and fuzzy bounded operators

Journal: :iranian journal of fuzzy systems 2011

in this note, we aim to present some properties of the space of all weakly fuzzy bounded linear operators, with the bag and samanta’s operator norm on felbin’s-type fuzzy normed spaces. in particular, the completeness of this space is studied. by some counterexamples, it is shown that the inverse mapping theorem and the banach-steinhaus’s theorem, are not valid for this fuzzy setting. also...

## fuzzy number-valued fuzzy ‎relation

Journal: :international journal of industrial mathematics 2015

it is well known fact that binary relations are generalized mathematical functions. contrary to functions from domain to range, binary relations may assign to each element of domain two or more elements of range. some basic operations on functions such as the inverse and composition are applicable to binary relations as well. depending on the domain or range or both are fuzzy value fuzzy set, i...

## fuzzy efficiency: multiplier and enveloping ccr ‎models‎

Journal: :international journal of industrial mathematics 2016

comparing the performance of a set of activities or organizations under uncertainty environment has been performed by means of fuzzy data envelopment analysis (fdea) since the traditional dea models require accurate and precise performance data. as regards a method for dealing with uncertainty environment, many researchers have introduced dea models in fuzzy environment. some of these models ar...

## symmetric triangular and interval approximations of fuzzy solution to linear fredholm fuzzy integral equations of the second kind

Journal: :iranian journal of fuzzy systems 2012

in this paper a linear fuzzy fredholm integral equation(ffie) with arbitrary fuzzy function input and symmetric triangular (fuzzy interval) output is considered. for each variable, output is the nearest triangular fuzzy number (fuzzy interval) to the exact fuzzy solution of (ffie).

## a new similarity measure between type-2 fuzzy numbers and fuzzy risk analysis

Journal: :iranian journal of fuzzy systems 2013
d. stephen dinagar a. anbalagan

in this paper, we present a revised similarity measure based onchen-and-chen's similarity measure for fuzzy risk analysis. the revisedsimilarity measure uses the corrected formulae to calculate the centre ofgravity points, therefore it is more  effective than the chen-and-chen'smethod. the revised similarity measure can overcome the drawbacks of theexisting methods. we have also proposed a new ...

## Fuzzy Number-Valued Fuzzy Graph

2016

Graph theory has an important role in the area of applications of networks and clustering‎. ‎In the case of dealing with uncertain data‎, ‎we must utilize ambiguous data such as fuzzy value‎, ‎fuzzy interval value or values of fuzzy number‎. ‎In this study‎, ‎values of fuzzy number were used‎. ‎Initially‎, ‎we utilized the fuzzy number value fuzzy relation and then proposed fuzzy number-value f...

## a method for solving fully fuzzy linear system

Journal: :نظریه تقریب و کاربرد های آن 0
m. mosleh department of mathematics, islamic azad university, firuozkooh branch, firuozkooh, iran. s. abbasbandy department of mathematics, science and research branch, islamic azad university, tehran 14515/775, iran. m. otadi department of mathematics, islamic azad university, firuozkooh branch, firuozkooh, iran.

in this paper, a numerical method for nding minimal solution of a mn fullyfuzzy linear system of the form ax = b based on pseudo inverse calculation,is given when the central matrix of coecients is row full rank or column fullrank, and where a~ is a non-negative fuzzy mn matrix, the unknown vectorx is a vector consisting of n non-negative fuzzy numbers and the constant b isa vector consisti...

## estimate output of a production unit in production possibility set with fuzzy inference mechanism

Journal: :international journal of data envelopment analysis 0
mohamad adabitabar firozja department of mathematics, qaemshahr branch, islamic azad university, qaemshahr, iran mohamad adabi firozjaei department of management , babol branch, islamic azad university, babol, iran. mousa eslamian phd student of management, semnan branch, islamic azad universal university, semnan, iran.

in this paper, we consider the production possibility set with n production units such that the following four principles that governs: inclusion observations, conceivability, immensity and convexity. our goal is to estimate the output of a same and new production unit with existing production possibility and amount of input is specified. so, initially we find the interval changes of each input...

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