Department of Mathematics, Semnan University, P.O. Box 35195-363, Semnan, Iran
Copyright © 2010 M. Eshaghi Gordji and H. Khodaei. This is an open access article distributed under the
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Th. M. Rassias (1984) proved that the norm defined over a real vector space is induced by an inner product if and only if for a fixed integer holds for all The aim of this paper is to extend the applications of the fixed point alternative method to provide a fuzzy stability for the functional equation which is said to be a functional equation associated with inner product spaces.