Volume 23 (2026)
Volume 22 (2025)
Volume 21 (2024)
Volume 20 (2023)
Volume 19 (2022)
Volume 18 (2021)
Volume 17 (2020)
Volume 16 (2019)
Volume 15 (2018)
Volume 14 (2017)
Volume 13 (2016)
Volume 11 (2014)
Volume 10 (2013)
Volume 9 (2012)
Volume 8 (2011)
Volume 7 (2010)
Volume 6 (2009)
Volume 5 (2008)
Volume 4 (2007)
Volume 3 (2006)
Volume 2 (2005)
Volume 1 (2004)
An integrated multi-criteria decision-making methodology based on type-2 fuzzy sets for selection among energy alternatives in Turkey

Melike Erdogan; ihsan Kaya

Volume 12, Issue 1 , January and February 2015, Pages 1-25

Abstract
  Energy is a critical factor to obtain a sustainable development for countries and governments. Selection of the most appropriate energy alternative is a completely critical and a complex decision making problem. In this paper, an integrated multi-criteria decision-making (MCDM) methodology based on type-2 ...  Read More

Approximation theorems for fuzzy set multifunctions in Vietoris topology. Physical implications of regularity

A. Gavrilut; M. Agop

Volume 12, Issue 1 , January and February 2015, Pages 27-42

Abstract
  n this paper, we consider continuity properties(especially, regularity, also viewed as an approximation property) for $%mathcal{P}_{0}(X)$-valued set multifunctions ($X$ being a linear,topological space), in order to obtain Egoroff and Lusin type theorems forset multifunctions in the Vietoris hypertopology. ...  Read More

Uniformities in fuzzy metric spaces

Yueli Yue; Jinming Fang

Volume 12, Issue 1 , January and February 2015, Pages 43-57

Abstract
  The aim of this paper is to study induced (quasi-)uniformities in Kramosil and Michalek's fuzzy metric spaces. Firstly, $I$-uniformity in the sense of J. Guti'{e}rrez  Garc'{i}a and $I$-neighborhood system in the sense of H"{o}hle and u{S}ostak are induced by the given fuzzy metric. It is shown ...  Read More

Application of parametric form for ranking of fuzzy numbers

R. Ezzati; S. Khezerloo; S. Ziari

Volume 12, Issue 1 , January and February 2015, Pages 59-74

Abstract
  In this paper, we propose a new approach for ranking all fuzzynumbers based on revising the ranking method proposed by Ezzati et al. cite{Ezzati}.To this end, we present and investigate some properties of the proposed approach indetails. Finally, to illustrate the advantage of the proposed method, it ...  Read More

Coupled Coincidence and Common Fixed Point Theorems for Single-Valued and Fuzzy Mappings

Li Zhu; Chuanxi Zhu; Xianjiu Huang

Volume 12, Issue 1 , January and February 2015, Pages 75-87

Abstract
  In this paper, we study the existence of coupled coincidence andcoupled common fixed points for single-valued and fuzzy mappingsunder a contractive condition in metric space. Presented theoremsextend and improve the main results of Abbas and$acute{C}$iri$acute{c}$ {itshape et al.} [M. Abbas, L.$acute{C}$iri$acute{c}$, ...  Read More

Minimal solution of fuzzy linear systems

M. Otadi; M. Mosleh

Volume 12, Issue 1 , January and February 2015, Pages 89-99

Abstract
  In this paper, we use parametric form of fuzzy number and we converta fuzzy linear system to two linear system in crisp case. Conditions for the existence of a minimal solution to $mtimes n$ fuzzy linear equation systems are derived and a numerical procedure for calculating the minimal solution is designed. ...  Read More

On upper and lower almost weakly continuous fuzzy multifunctions

S. E. Abbas; M. A. Hebeshi; I. M. Taha

Volume 12, Issue 1 , January and February 2015, Pages 101-114

Abstract
  The aim of this paper is to introduce the concepts of fuzzy upper and fuzzy lower almost continuous, weakly continuous and almost weakly continuous multifunctions. Several characterizations and properties of these multifunctions along with their mutual relationships are established in $L$-fuzzy topological ...  Read More

Fuzzy Vector Equilibrium Problem

Mijanur Rahaman; Rais Ahmad

Volume 12, Issue 1 , January and February 2015, Pages 115-122

Abstract
  In the present paper, we introduce and study a fuzzy vector equilibrium problem and prove some existence results with and without convexity assumptions by using some particular forms of results of textit{Kim} and textit{Lee} [W.K. Kim and K.H. Lee, Generalized fuzzy games and fuzzy equilibria, Fuzzy ...  Read More

Generalized Weakly Contractions in Partially Ordered Fuzzy Metric Spaces

S. M. Vaezpour; S. Vaezzadeh

Volume 12, Issue 1 , January and February 2015, Pages 123-129

Abstract
  In this paper, a concept of generalized weakly contraction mappings in partially ordered fuzzy metric spaces is introduced and  coincidence point  theorems on partially ordered fuzzy metric spaces are proved. Also, as the corollary of these theorems, some common fixed point theorems on partially ...  Read More