We give the commutative of compound function definition and prove the existence of common fixed points of a functionsequence.
本文定义了两个函数复合可交换的概念，并证明了函数列存在公共不动点。
2
Based on the need of solving practical problems, Professor C. Zhang proposed pseudo almost periodic function and pseudo almost periodic functionsequence.
基于解决实际问题的需要，张传义教授提出了伪概周期函数和伪概周期序列。
3
M-band interpolatory wavelet packets is a sequence space spanned by dilation translates of a iterate functionsequence obtained by a cardinal interpolation function.