نتایج جستجو برای: fuzzy complex numbers

تعداد نتایج: 1044009  

Journal: :J. Applied Mathematics 2012
Tiejun Li Jianhua Jin Chunquan Li

Multicriteria group decision making MCGDM research has rapidly been developed and become a hot topic for solving complex decision problems. Because of incomplete or non-obtainable information, the refractured well-selection problem often exists in complex and vague conditions that the relative importance of the criteria and the impacts of the alternatives on these criteria are difficult to dete...

Journal: :iranian journal of fuzzy systems 2014
ibrahim canak

let $(u_n)$ be a sequence of fuzzy numbers.  we recover the slow oscillation of $(u_n)$ of fuzzy numbers from the ces`{a}ro summability of its generator sequence and some additional conditions imposed on $(u_n)$. further, fuzzy analogues of some well known classical tauberian theorems for ces`{a}ro summability method are established as particular cases.

Journal: :journal of linear and topological algebra (jlta) 0
s. p mondal department of mathematics, national institute of technology, agartala, jirania-799046, tripura, india t. k roy department of mathematics, indian institute of engineering science and technology, shibpur, howrah-711103, west bengal, india

in this paper the solution of a second order linear di erential equations with intu-itionistic fuzzy boundary value is described. it is discussed for two di erent cases: coecientis positive crisp number and coecient is negative crisp number. here fuzzy numbers aretaken as generalized trapezoidal intutionistic fuzzy numbers (gtrifns). further a numericalexample is illustrated.

Journal: :international journal of industrial mathematics 2010
d. chakraborty d. guha

Journal: :international journal of industrial mathematics 0
rahim saneifard department of applied mathematics‎, ‎urmia branch‎, ‎islamic azad university‎, ‎urmia‎, ‎iran.‎‎ rasoul saneifard department of engineering technology‎, ‎texas southern university‎, ‎houston‎, ‎texas‎, ‎usa.

the importance as well as the difficulty of the problem of ranking fuzzy numbers is pointed out. here we consider approaches to the ranking of fuzzy numbers based upon the idea of associating with a fuzzy number a scalar value, its signal/noise ratios, where the signal and the noise are defined as the middle-point and the spread of each $gamma$-cut of a fuzzy number, respectively. we use the va...

Journal: :Pattern Recognition 2011
Xin Fu Qiang Shen

There are a variety of measures to describe classification performance with respect to different criteria and they are often represented by numerical values. Psychologists have commented that human beings can only reasonably manage to process seven or-so items of information at any one time. Hence, selecting the best classifier amongst a number of alternatives whose performances are represented...

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 mn fullyfuzzy linear system of the form ax = b based on pseudo inverse calculation,is given when the central matrix of coecients is row full rank or column fullrank, and where a~ is a non-negative fuzzy mn matrix, the unknown vectorx is a vector consisting of n non-negative fuzzy numbers and the constant b isa vector consisti...

In this paper, we study the existence, asymptotic behavior of the positive solutions of a fuzzy nonlinear difference equation$$ x_{n+1}=frac{Ax_n+x_{n-1}}{B+x_{n-1}}, n=0,1,cdots,$$ where $(x_n)$ is a sequence of positive fuzzy number, $A, B$ are positive fuzzy numbers and the initial conditions $x_{-1}, x_0$ are positive fuzzy numbers.

The purpose of this study is to find the percentiles of fuzzy numbersand to demonstrate their applications, which include finding weightedmeans, dispersion indices, and the percentile intervals of fuzzy numbers. Thecrisp approximations of fuzzy numbers introduced in this paper are new andinteresting for the comparison of fuzzy environments, such as a variety of economic,financial, and engineeri...

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