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G:=DihedralGroup(64);;
A:=ModPSteenrodAlgebra(G,8);;
H4:=Filtered(Basis(A),x->A!.degree(x)=4);;
Sq3H4:=List(H4,x->Sq(A,3,x));;
Print(Dimension(Submodule(A,Sq3H4)),"\n");
B:=Basis(Submodule(A,Sq3H4));;
PrintAlgebraWordAsPolynomial(A,B[1]); Print("\n");
PrintAlgebraWordAsPolynomial(A,B[2]); Print("\n");
[ Dauer der Verarbeitung: 0.13 Sekunden
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