特征函数定理

通用特征函数所代表的热力学过程，是以级数序号集对应的强度量和级数序号集以外的其它序号对应的广延量为独立变量的热力学过程．把一个实际复杂的物理过程与抽象的数学表述之间的关系用一个对应序号的大小排列来代替，说明通用特征函数不是一个抽象的概念，而是与实际热力学过程有着紧密的内在联系，并且有广泛的应用前景．

Laws of thermodynamic general characteristic function

It is pointed out that the thermodynamic process described with the general characteristic function is one that has in dependent variables consisting of intensive variables of the corresponding kind order set and externsive variables of other orders except the kind order set. It replaces the transfering relation between a concrete and complex physical process and abstract expression of the mathematics with the arrangement of the corresponding orders from big number to small ones. It is shown that the general characteristic function is not an abstract concept, and is one closely related to thermodynamic process, and therefore its application is wide