scholarly journals Stability of functional equations in single variable

2003 ◽  
Vol 288 (2) ◽  
pp. 852-869 ◽  
Author(s):  
Ravi P. Agarwal ◽  
Bing Xu ◽  
Weinian Zhang
Author(s):  
Yeol Je Cho ◽  
Choonkil Park ◽  
Themistocles M. Rassias ◽  
Reza Saadati

2013 ◽  
Vol 29 (1) ◽  
pp. 125-132
Author(s):  
CLAUDIA ZAHARIA ◽  
◽  
DOREL MIHET ◽  

We establish stability results concerning the additive and quadratic functional equations in complete Menger ϕ-normed spaces by using fixed point theory. As particular cases, some theorems regarding the stability of functional equations in β - normed and quasi-normed spaces are obtained.


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