We use a fixed point method to investigate the stability problem of the quadratic functional equation f(x + y) + f(x - y) = 2f(root xx* + yy*) in C*-algebras. Copyright (C) 2009 Mohammad B. Moghimi et al.The third author was supported by Korea Research Foundation Grant funded by the Korean Government (KRF-2008-313-C00041)
Abstract. In this paper, we investigate the stability of a functional equation f(x+y+z)−f(x+y)−f(y+z...
Using fixed point methods, we prove the generalized Hyers-Ulam stability of homomorphisms in C∗-alge...
In this paper, we investigate the quadratic alpha-functional equation 2f (x) + 2 f (y) - f (x y) ...
We use a fixed point method to investigate the stability problem of the quadratic functional equatio...
We use a fixed point method to investigate the stability problem of the quadratic functional equatio...
Abstract Using the fixed-point method, we prove the generalized Hyers-Ulam stability of the function...
Abstract. We investigate the stability of the functional equation f(x+ y + z + w) + 2f(x) + 2f(y) + ...
Lee, An and Park introduced the quadratic functional equation f(2x+y) + f(2x-y) = 8f(x) + 2f(y) and ...
Using fixed point methods, we prove the generalized Hyers-Ulam stability of homomorphisms in C*-alge...
Using the fixed point method, we prove the Hyers-Ulam stability of the following quadratic functiona...
We investigate the stability of the functional equation 2(+)+(−)+(−)−3()−(−)−3()−(−)=0 by using the ...
By applying the fixed point method, we will prove the Hyers-Ulam-Rassias stability of the functional...
Cădariu and Radu applied the fixed point theorem to prove the stability theorem of Cauchy and J...
By applying a fixed point approach, we investigate the stability problems for an AQCQ functional equ...
Jensen-type functional equation fx y/2 fx − y/2 fx. Copyright q 2009 C. Park and J. M. Rassia...
Abstract. In this paper, we investigate the stability of a functional equation f(x+y+z)−f(x+y)−f(y+z...
Using fixed point methods, we prove the generalized Hyers-Ulam stability of homomorphisms in C∗-alge...
In this paper, we investigate the quadratic alpha-functional equation 2f (x) + 2 f (y) - f (x y) ...
We use a fixed point method to investigate the stability problem of the quadratic functional equatio...
We use a fixed point method to investigate the stability problem of the quadratic functional equatio...
Abstract Using the fixed-point method, we prove the generalized Hyers-Ulam stability of the function...
Abstract. We investigate the stability of the functional equation f(x+ y + z + w) + 2f(x) + 2f(y) + ...
Lee, An and Park introduced the quadratic functional equation f(2x+y) + f(2x-y) = 8f(x) + 2f(y) and ...
Using fixed point methods, we prove the generalized Hyers-Ulam stability of homomorphisms in C*-alge...
Using the fixed point method, we prove the Hyers-Ulam stability of the following quadratic functiona...
We investigate the stability of the functional equation 2(+)+(−)+(−)−3()−(−)−3()−(−)=0 by using the ...
By applying the fixed point method, we will prove the Hyers-Ulam-Rassias stability of the functional...
Cădariu and Radu applied the fixed point theorem to prove the stability theorem of Cauchy and J...
By applying a fixed point approach, we investigate the stability problems for an AQCQ functional equ...
Jensen-type functional equation fx y/2 fx − y/2 fx. Copyright q 2009 C. Park and J. M. Rassia...
Abstract. In this paper, we investigate the stability of a functional equation f(x+y+z)−f(x+y)−f(y+z...
Using fixed point methods, we prove the generalized Hyers-Ulam stability of homomorphisms in C∗-alge...
In this paper, we investigate the quadratic alpha-functional equation 2f (x) + 2 f (y) - f (x y) ...