Professor wang has adopted a method that solving difference equation in [ 2 ] 在文献[ 2 ]中，王梓坤教授采用了解差分方程法。
2.
The characteristic numbers and their probability meaning of the birth and death process have been settled by both professor yang in [ 1 ] and professor wang in [ 2 ] 杨向群教授在文献[ 1 ] ，王梓坤教授在文献[ 2 ]中，对以0为反射壁的生灭过程的特征数及其概率意义已解决。
