Some Properties on von Neumann-Jordan Type Constants of Banach Spaces
Banach 空间中von Neumann-Jordan 型常数的一些性质

In this paper, the authorsmainly givesome propertiesof vonNeumann-Jordantype constants. First, they characterize some equivalent conditions of uniformly non-square by von Neumann-Jordan constants. Second, they discuss the relation between von Neumann-Jordan type constant and normal structure. Finally, they give some relations among C1′(X), C1(X) and other constants.