摘要: In this paper, by normwe give a sufficient and necessary condition of k-smooth points and k-strong smooth points.
中图分类号:
方习年, 汪远征. 关于k-光滑性与k-强光滑性[J]. 数学季刊, 1997, 12(2): 36-41.
Fang Xinian, Wang Yuanzheng. On the k-smoothness and k-strong Smoothness[J]. Chinese Quarterly Journal of Mathematics, 1997, 12(2): 36-41.