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Sahand Communications in Mathematical Analysis، جلد ۲۱، شماره ۱، صفحات ۳۲۷-۳۴۵
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چکیده فارسی مقاله
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عنوان انگلیسی Statistical Deferred Weighted Riemann Summability and Fuzzy Approximation Theorems
چکیده انگلیسی مقاله The notion of statistical convergence has fascinated many researchers due mainly to the fact that it is more general than the well-established hypothesis of ordinary (classical) convergence. This work aims to investigate and present (presumably new) the statistical versions of deferred weighted Riemann integrability and deferred weighted Riemann summability for sequences of fuzzy functions. We first interrelate these two lovely theoretical notions by establishing an inclusion theorem. We then state and prove two fuzzy Korovkin-type theorems based on our proposed helpful and potential notions. We also demonstrate that our results are the nontrivial extensions of several known fuzzy Korovkin-type approximation theorems given in earlier works. Moreover, we estimate the statistically deferred weighted Riemann summability rate supported by another promising new result. Finally, we consider several interesting exceptional cases and illustrative examples supporting our definitions and the results presented in this paper.
کلیدواژه‌های انگلیسی مقاله Fuzzy number valued functions, Riemann integral, Statistical Riemann integral, Deferred weighted mean, Korovkin-type theorems
نویسندگان مقاله Priyadarsini Parida |
Department of Mathematics, Kuntala Kumari Sabat Women's College, Balasore 756003, Odisha, India.

Susanta Kumar Paikray |
Department of Mathematics, Veer Surendra Sai University of Technology, Burla 768018, Odisha, India.

Bidu Bhusan Jena |
Faculty of Science (Mathematics), Sri Sri University, Cuttack 754006, Odisha, India.

نشانی اینترنتی https://scma.maragheh.ac.ir/article_708587_c3aec703c0edae6ab0d6b80e0148b826.pdf
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