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...

Article history: Received 6 January 2010 Revised 11 November 2010 Accepted 15 November 2010 Available online 21 November 2010

The aim of present work is to introduce and study the concepts of S λ limit points and cluster points and S λ -limit inferior and limit superior of fuzzy number sequences.

Fuzzy equivalents of all the classical capital budgeting (investment choice) methods are generalised or proposed. These equivalents can be used to evaluate and compare projects in which the cash ows, duration time and required rate of return (cost of capital) are given imprecisely, in the form of a fuzzy number. c © 2000 Elsevier Science B.V. All rights reserved.

Index Terms—Fuzzy number, lambda-statistical limit inferior, lambda-statistical limit superior.

This note is a rejoinder on our paper in this issue. It attempts to provide some clari cations and thoughts in connection with the discussions/comments made about it by Didier Dubois and Sébastien Destercke. We hope our comments are at the level of the discussants'.

In [13], we proposed that there are three kinds of negative relations which contradictory negative relation, opposite negative relation and medium negative relation in fuzzy information, and that defined a new fuzzy set FSCOM with contradictory negation, opposite negation and medium negation. In order to show applicability of FSCOM, this paper apply FSCOM to fuzzy decision making in an actual e...

Abstract. Many ranking methods have been proposed so far. However, there is not a method that can always give a satisfactory solution to every situation; some method are counterintuitive, others methods give different rankings solutions for the same conditions, this is not the case of Liou and Wang method, however, this method can give the same ranking for different fuzzy number, so that, we pr...