Conjecture on evaluation of prismatic GG-FF-gauges

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Let RR be a complete regular local ring over W(k)W(k) with residue field kk, let (S,(E))=(W(k)[[t1,…,tn]],(E))(\mathfrak{S},(\mathcal{E}))=(W(k)[[t_1,\dotsc,t_n]],(\mathcal{E})) be a prism of Breuil--Kisin type with R≃S/ER\simeq\mathfrak{S}/\mathcal{E} over W(k)W(k), and let μ\mu be 1-bounded. For a perfectoid pair (S,a♭)(S,a^\flat) over W(k)W(k), use the associated prismatic GG-FF-gauges and displays. Evaluation conjecture for prismatic GG-FF-gauges. If dim⁡R=1\dim R=1, then for every integer m≥1m\geq1 the natural functor

G\mathchar‘−F\mathchar‘−Gaugeμ(R/mRm)→G\mathchar‘−Dispμ(Sm,(E))G\mathchar`-F\mathchar`-\mathrm{Gauge}_\mu(R/\mathfrak{m}_R^m)\to G\mathchar`-\mathrm{Disp}_\mu(\mathfrak{S}_m,(\mathcal{E}))

is an equivalence; and for every perfectoid pair (S,a♭)(S,a^\flat) and every integer m≥1m\geq1, the natural functor

G\mathchar‘−F\mathchar‘−Gaugeμ(S/am)→G\mathchar‘−Dispμ(W(S♭)/[a♭]m,IS)G\mathchar`-F\mathchar`-\mathrm{Gauge}_\mu(S/a^m)\to G\mathchar`-\mathrm{Disp}_\mu(W(S^\flat)/[a^\flat]^m,I_S)

is an equivalence. These assertions are conjectural in general; the paper notes that related statements should follow from work of Gardner--Madapusi, and records cases known for G=GL⁡NG=\operatorname{GL}_N.

References

Primary source

Kazuhiro Ito, “Deformation theory for prismatic G-displays”, arXiv:2306.05361 (2025).

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