文中研究了灰指数律的性质，齐次与非齐次指数律和原点分布、正分布、负分布的指数律，获得了有关的定理为灰色预测建模的优化信息处理，提供了依据与基础。
By defining the distribution of the origin and the positive and negative distribution, theorems are obtained that make it possible to optimize data processing for grey forecasting modelling.
对于一般的非凸函数，其方向导数不具备任何凸性，可以利用一般正齐次函数的回收函数来给出它的一个上凸近似。
We research on describing preinvexity of functions in this paper by means of the density and weakly near convexity in the set.
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