Nowadays, the world becomes a global village, as McLuhan said, by new information devices. Recent forms of communication have been developed in virtual environments, which apart from their benefits have their own challenges such as endangering the safety the society. Today, the use of information technology in various aspects of the individual and the social have positive and negative consequen...

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in this thesis we will present three topics. we define approximate fixed points in fuzzy normed spaces. also we obtain some necessary and sufficient conditions on the existence of? -fixed points for ? > 0. at the continue some results about approximate fixed points for a class of non-expansive maps on g-metric spaces are obtained and we define approximate fixed points in partial metric spa...