Some secondary differentials on the fourth line of the Adams spectral sequence (Q2042278)

In the \(E_{2}\)-term of the classical Adams spectral sequence, in the first degree \(s=1,2,3\), the generators are known. For the generators of the fourth line \(E_{2}^{4,*}\), only partial results are known. In this paper, the authors detect some nontrivial secondary Adams differentials on the fourth line \(\mathrm{Ext}^{4,*}(\mathbb{Z}/p,\mathrm{Z}/p)\) of the classical Adams spectral sequence by applying cobar constructions and Massey products.