title of the paper: The answer to an email of Mr. Douglas C. Ravenel

author: Zhou Xueguang

AMS classification numbers:  Q55

Address of author:Department of Mathematics, Nankai University,
Tianjin 300071, People's Republic of China

Email address of author:  zhengqb@eyou.com

Abstract: In this paper, we answer the question why V(n) exists for
all non-negative integers n.