We discuss some optimization problems for fuzzy variable functions and show two interesting results. First result is related to conditions for existence of global optimal solutions for some general class of optimization problems on E, the space of compacts, upper semicontinuous and normal fuzzy sets of R. The second result is about preservation of local optimality points, via Zadeh’s principle ...

we are concerned with the development of a k−step method for the numerical solution of fuzzy initial value problems. convergence and stability of the method are also proved in detail. moreover, a specific method of order 4 is found. the numerical results show that the proposed fourth order method is efficient for solving fuzzy differential equations.

Asymptotic stability for difference equations with decreasing arguments D. M. Chan , E. R. Chang , M. Dehghan , C. M. Kent , R. Mazrooei-Sebdani & H. Sedaghat To cite this article: D. M. Chan , E. R. Chang , M. Dehghan , C. M. Kent , R. Mazrooei-Sebdani & H. Sedaghat (2006) Asymptotic stability for difference equations with decreasing arguments, Journal of Difference Equations and Applications,...

the linear system of equations ax = b where a = [aij ] in cn.n is a crispsingular matrix and the right-hand side is a fuzzy vector is called a singularfuzzy linear system of equations. in this paper, solving singular fuzzy linearsystems of equations using generalized inverses such as drazin inverse andpseudo-inverse are investigated.

in this paper, a  fuzzy numerical procedure for solving fuzzy linear volterra integro-differential equations of the second kind under strong  generalized differentiability is designed. unlike the existing numerical methods, we do not replace the original fuzzy equation by a $2times 2$ system ofcrisp equations, that is the main difference between our method  and other numerical methods.error ana...

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 error is defined and sufficient conditions for convergence, consistency and stability of ...

bl ood glucos e l evels meas ured a t half hour intervals in a series of 45 major s urgica l procedur es demonstrated a consis tent hyp er glycemi a during the course of operation . peaks were ass ociated with per iods of cardi a-vascular stress .. i n cont r ast , pat ients in whom autonomi c act ivi ty was inhibited by ganglionic blockade demonstra t ed a cons ist ent decrease in blood g luco...

the hybrid fuzzy differential equations have a wide range of applications in science and engineering. we consider the problem of nding their numerical solutions by using a novel hybrid method based on fuzzy neural network. here neural network is considered as a part of large eld called neural computing or soft computing. the proposed algorithm is illustrated by numerical examples and the resu...