Fuzzy Farthest Points and Fuzzy Best Approximation Points in Fuzzy Normed Spaces
Publish place: Theory of Approximation and Applications، Vol: 13، Issue: 1
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_MSJI-13-1_002
تاریخ نمایه سازی: 28 فروردین 1402
Abstract:
In this paper we define fuzzy farthest points, fuzzy best approximation points and farthest orthogonality in fuzzy normed spaces and we will find some results. We prove some existence theorems, also we consider fuzzy Hilbert and show every nonempty closed and convex subset of a fuzzy Hilbert space has an unique fuzzy best approximation.It is well know that the conception of fuzzy sets, firstly defined by Zadeh in ۱۹۶۵. Fuzzy set theory provides us with a framework which is wider than that of classical set theory. Various mathematical structures, whose features emphasize the effects of ordered structure, can be developed on the theory. The theory of fuzzy sets has become an area of active research for the last forty years. On the other hand, the notion of fuzzyness has a wide application in many areas of science and engineering, chaos control, nonlinear dynamical systems, etc. In physics, for example, the fuzzy structure of space time is followed by the fat that in strong quantum gravity regime space time points are determined in a fuzzy manner.
Keywords:
Normed fuzzy space , Fuzzy farthest orthogonality , Fuzzy best approximation points , Fuzzy farthest points
Authors
Hamid Mazaheri Tehrani
Faculty of Mathematics, Yazd University, Yazd, Iran
S. M Mouavi Shams Abad
Faculty of Mathematics, Vali-e-asr University of Rafsenjan, Rafsenjan, Iran
M. A Dehghan
Faculty of Mathematics, Vali-e-asr University of Rafsenjan, Rafsenjan, Iran
Z. Bizhanzadeh
Faculty of Mathematics, Yazd University, Yazd, Iran
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