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Title of the Paper: A Subspace of Ext$_A(Z_p,Z_p)$\\

Author: Zheng Qibing\\

AMS Classification Number: 55 18G \\

Address of Author\\

Zheng Qibing\\
Department of Mathematics\\
Nankai University\\
Tianjin, 300071, P.R.China\\

Email Address of Author: zhengqb@eyou.com\\

Abstract\\
In this paper, we compute the cohomology of some Hopf algebras
and find  a subspace of the cohomology of the Steenrod algebra
that includes the representative of the Greek letter families.


















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