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Unresolved Bockstein differential on γ/τ^7 h0^3 h4^2 in coweight 6, stem 30

Determine whether the element γ/τ^7 h_0^3 h_4^2 (coweight 6, stem 30) is hit by a Bockstein differential, specifically by establishing either a Bockstein d_9 from γ/(ρ^9 τ) h_2 c_1 (coweight 7, stem 31) to γ/τ^7 h_0^3 h_4^2 or a longer Bockstein differential originating from γ/(ρ^k τ) h_2 c_1; resolve this remaining uncertainty in the computed range.

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Background

The paper gives a nearly complete determination of Bockstein differentials in the stated range (coweights −2 to 8, stems up to 30). One exception remains concerning a potential differential hitting γ/τ7 h_03 h_42.

Clarifying this case would complete the description of the Bockstein E_∞-page in the given range and solidify subsequent deductions in the Adams spectral sequence and hidden extension analyses.

References

In the range under consideration in this manuscript (coweights from $-2$ to $8$, stems up to $30$), there is one possible Bockstein differential that we have not established. It is possible that the element $\frac{\gamma}{\tau7} h_03 h_42$ in coweight $6$ and stem $30$ is hit by a differential. More precisely, either there is a Bockstein $d_9$ differential from $\frac{\gamma}{\rho9 \tau} h_2 c_1$ in coweight 7 and stem 31 to $\frac{\gamma}{\tau7} h_03 h_42$ or else $\frac{\gamma}{\rhok \tau} h_2 c_1$ supports a longer Bockstein differential. The uncertain status of the element $\frac{\gamma}{\tau7} h_03 h_42$ is indicated in \cref{fig:Ext} by an open square.

C_2-Equivariant Stable Stems (2404.14627 - Guillou et al., 22 Apr 2024) in Section 8 (Bockstein differentials)