A note on the non-trivial elements in the cohomology groups of the Steenrod algebra

Dang Vo Phuc

Let $F_2$ be the prime field of two elements and let $G{L}_s:=GL(s,F_2)$ be the general linear group of rank $s.$ Denote by $\mathcal{A}$ the Steenrod algebra over $F_2.$ The (mod-2…