摘要

Let p be a prime greater than five and A themod p Steenrod algebra. In this paper, we prove that the product h(0)h(n)(delta) over tilde (s+4) is an element of Ext(A)(s+6, t (s, n)+ s) A (Z/p, Z/p) is nontrivial in theAdams E2-term for n >= 5or n = 2, and trivial for n = 3, 4, where 0 <= s < p-4 and t (s, n) = 2(p - 1)[(s + 2) + (s + 2) p + (s + 3) p(2) + (s + 4) p(3) + p(n)].

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