A Wrong Lemma Is Found and Modified
Zhang Qing,Wang Zhaoxia (The Department of Mathmatics, Tangshan Normal College, Tang shan 063000).
Power series of several variables is a important tool to discuss function, but its property is different with simple power series. In this paper, we found a wrong lemma on power series of several variables, and we modified it.
【CateGory Index】： O175