SQUARE ROOT AND 3RD ROOT FUNCTIONAL EQUATIONS IN C^*-ALGEBRAS:
In this paper, we introduce a square root functional equation anda 3rd root functional equation. Using fixed point methods, we prove the Hyers-Ulam stability of the square root functional equation and of the 3rd root functional equation in Coalgebras.
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Copyright (c) 2010 Journal of Nonlinear Analysis and Optimization: Theory & Applications
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