通过研究中点凸函数和一般凸函数这两种凸性定义的早期发展历史和凸性性质来探索两种凸性定义的等价性.结果表明,两种凸性定义不等......

In this paper we obtain all other local Nikolskii constants for Baskakov operators by ap-plying a method of asymptotic e......