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)
Admissibility analysis for discrete-time singular systems with time-varying delays by adopting the state-space Takagi-Sugeno fuzzy model

P. Balasubramaniam -pour; L. Jarina Banu

Volume 12, Issue 3 , May and June 2015, Pages 1-16

Abstract
  This paper is pertained with the problem of admissibility analysis of uncertain discrete-time nonlinear singular systems by adopting the state-space Takagi-Sugeno fuzzy model with time-delays and norm-bounded parameter uncertainties. Lyapunov Krasovskii functionals are constructed to obtain delay-dependent ...  Read More

Fuzzy Risk Analysis Based on Ranking of Fuzzy Numbers Via New Magnitude Method

T. Hajjari

Volume 12, Issue 3 , May and June 2015, Pages 17-29

Abstract
  Ranking fuzzy numbers plays a main role in many applied models inreal world and in particular decision-making procedures. In manyproposed methods by other researchers may exist some shortcoming.The most commonly used approaches for ranking fuzzy numbers isbased on defuzzification method. Many ranking ...  Read More

Fixed Fuzzy Points of Fuzzy Mappings in Hausdorff Fuzzy Metric Spaces with Application

Calogero Vetro; Mujahid Abbas; Basit Ali

Volume 12, Issue 3 , May and June 2015, Pages 31-45

Abstract
  Recently, Phiangsungnoen et al. [J. Inequal. Appl. 2014:201 (2014)] studied fuzzy mappings in the framework of Hausdorff fuzzy metric spaces.Following this direction of research, we establish the existence of fixed fuzzy points of fuzzy mappings. An example is given to support the result proved herein; ...  Read More

Some classes of statistically convergent sequences of fuzzy numbers generated by a modulus function

U. Cakan; Y. Altin

Volume 12, Issue 3 , May and June 2015, Pages 47-55

Abstract
  The purpose of this paper is to generalize the concepts of statisticalconvergence of sequences of fuzzy numbers defined by a modulus functionusing difference operator $Delta$ and give some inclusion relations.  Read More

Categorically-algebraic topology and its applications

Sergey A. Solovyov

Volume 12, Issue 3 , May and June 2015, Pages 57-94

Abstract
  This paper introduces a new approach to topology, based on category theory and universal algebra, and called categorically-algebraic (catalg) topology. It incorporates the most important settings of lattice-valued topology, including poslat topology of S.~E.~Rodabaugh, $(L,M)$-fuzzy topology of T.~Kubiak ...  Read More

Convergence, Consistency and Stability in Fuzzy Differential Equations

R. Ezzati; K. Maleknejad; S. Khezerloo; M. Khezerloo

Volume 12, Issue 3 , May and June 2015, Pages 95-112

Abstract
  In this paper, we consider First-order fuzzy differential equations with initial value conditions. The convergence, consistency and stability of difference method for approximating the solution of fuzzy differential equations involving generalized H-differentiability, are studied. Then the local truncation ...  Read More

Interval Type-2 Fuzzy Rough Sets and Interval Type-2 Fuzzy Closure Spaces

Shambhu Sharan; S. P. Tiwari; V. K. Yadav

Volume 12, Issue 3 , May and June 2015, Pages 113-125

Abstract
  The purpose of the present work is to establish a one-to-one correspondence between the family of interval type-2 fuzzy reflexive/tolerance approximation spaces and the family of interval type-2 fuzzy closure spaces.  Read More

Boundedness of linear order-homomorphisms in $L$-topological vector spaces

Hua-Peng Zhang; Jin-Xuan Fang

Volume 12, Issue 3 , May and June 2015, Pages 127-135

Abstract
  A new definition of boundedness of linear order-homomorphisms (LOH)in $L$-topological vector spaces is proposed. The new definition iscompared with the previous one given by Fang [The continuity offuzzy linear order-homomorphism, J. Fuzzy Math. 5 (4) (1997)829$-$838]. In addition, the relationship between ...  Read More

Distinct Fuzzy Subgroups of a Dihedral Group of Order $2pqrs$ for Distinct Primes $p, , q, , r$ and $s$

Babington Makamba; Odilo Ndiweni

Volume 12, Issue 3 , May and June 2015, Pages 137-149

Abstract
  In this paper we classify fuzzy subgroups of the dihedral group $D_{pqrs}$  for distinct primes  $p$, $q$, $r$ and $s$. This follows similar work we have done on distinct fuzzy subgroups of some dihedral groups.We present formulae for the number of (i) distinct maximal chains of subgroups, ...  Read More

Solvable $L$-subgroup of an $L$-group

Iffat Jahan; Naseem Ajmal

Volume 12, Issue 3 , May and June 2015, Pages 151-166

Abstract
  In this paper, we study the notion of solvable $L$-subgroup of an $L$-group and provide its level subset characterization and this justifies the suitability of this extension. Throughout this work, we have used normality of an $L$-subgroup of an $L$-group in the sense of Wu rather than Liu.  Read More