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Best Co-approximation and Worst Approximation by Closed Unit Balls | ||
Theory of Approximation and Applications | ||
مقاله 7، دوره 16، شماره 2، دی 2022، صفحه 55-65 اصل مقاله (529.37 K) | ||
نوع مقاله: Research Articles | ||
نویسنده | ||
Hamid Mazaheri Tehrani* | ||
Department of Mathematics, Yazd University, Yazd, Iran | ||
چکیده | ||
A kind of approximation, called best coapproximation was introduced and discussed in normed linear spaces by C. Franchetti and M. Furi in 1972. Subsequently, this study was taken up by several researchers in different abstract spaces. In this paper, we consider best coapproximation by closed unit balls. We define qcoproximinal and coremotal, and find some theorems. | ||
کلیدواژهها | ||
Copoximinal؛ Cochebyshevl؛ Uniquely remotal؛ Qcoproximinal؛ Closed Unit Balls | ||
آمار تعداد مشاهده مقاله: 54 تعداد دریافت فایل اصل مقاله: 69 |