The E′′E''-family HH-moment conjecture

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Let QQ be a global field, let Γ\Gamma be a finite group, and let TT be a finite set of places with prescribed decomposition subgroups (Gammav)votinT(Gamma_v)_{v otin T}. Let E”Gamma,(Gammav)votinT(D,Q)E”_{Gamma,(Gamma_v)_{v otin T}}(D,Q) consist of the corresponding GammaGamma-extensions satisfying the cyclotomic-disjointness condition but not necessarily the roots-of-unity condition used to define E′E'. Let HH be a finite admissible GammaGamma-group.

E”E”-family HH-moment conjecture. The filtered HH-moment conjecture remains true after every occurrence of EGamma,(Gammav)votinT′(D,Q)E'_{Gamma,(Gamma_v)_{v otin T}}(D,Q) is replaced by E”Gamma,(Gammav)votinT(D,Q)E”_{Gamma,(Gamma_v)_{v otin T}}(D,Q).

This is proposed as a way to retain extensions excluded by the roots-of-unity condition while avoiding the cyclotomic-subextension obstruction to Malle-type statistics. Its status is open.

References

Primary source

Ken Willyard, “Presentations of Galois groups of unramified extensions of global fields and its predicted distribution”, arXiv:2605.14158 (2026).

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