在本质性推广了O-正则变化拟单调性的一个新条件下,本文在一般复值连续函数空间给出了一类三角级数最佳逼近度的完整结果,并建立了一个重要应用。
The main object of the present paper is to give a complete result regarding the best approximation rate of certain trigonometric series in general complex valued continuous function space under a new condition which gives an essential generalization to O-regularly varying quasimonotonicity, An application is presented.