نتایج جستجو برای: positive additive functional equation

تعداد نتایج: 1474953  

E. Elqorachi Th. M. Rassias Y. Manar

In the present paper a solution of the generalizedquadratic functional equation$$f(kx+ y)+f(kx+sigma(y))=2k^{2}f(x)+2f(y),phantom{+} x,yin{E}$$ isgiven where $sigma$ is an involution of the normed space $E$ and$k$ is a fixed positive integer. Furthermore we investigate theHyers-Ulam-Rassias stability of the functional equation. TheHyers-Ulam stability on unbounded domains is also studied.Applic...

Journal: :Journal of the Chungcheong Mathematical Society 2014

Journal: :Journal of Inequalities and Applications 2010

Journal: :Bulletin of the Korean Mathematical Society 2015

Journal: :Communications of the Korean Mathematical Society 2008

2014
M. Eshaghi Gordji H. Khodaei Y. W. Lee G. H. Kim

and Applied Analysis 3 Clearly, every Menger PN-space is probabilistic metric space having a metrizable uniformity on X if supa<1T a, a 1. Definition 1.3. Let X,Λ, T be a Menger PN-space. i A sequence {xn} in X is said to be convergent to x in X if, for every > 0 and λ > 0, there exists positive integer N such that Λxn−x > 1 − λ whenever n ≥ N. ii A sequence {xn} in X is called Cauchy sequence ...

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