在第二个问题中，我们给出了在离散的情形下，指数族势函数严凸的充分必要条件。
In the second we give the necessary and sufficient conditions for strict convexity of power function of exponential family in the discrete case.
在第二节中，我们研究了树映射的渐近稳定集，得到了不动点为渐近稳定的两个充分必要条件。
In section 2, asymptotically stable sets of tree maps are studied, and two necessary and sufficient conditions for a fixed point to be asymptotically stable are obtained.
应用推荐