几个凸函数定义的差异性及等价性

The Difference and Eguivalent of the Definitions of Some Convex Functions

对常见的六种凸函数定义的差异性及等价性进行深入的讨论，不但揭示了定义之间的内在联系，而且较文[1]在广度和深度上更进一步。

It deals with the deep discussion about the difference and eguivalent ofseven convex functions. It demonstrates the internal relationship of the definitions and goesdeeper than the essay one in wideness and depth.