Conjecture on evaluation of prismatic GG-FF-gauges

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 RS/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 dimR=1\dim R=1, then for every integer m1m\geq1 the natural functor

G\mathcharF\mathcharGaugeμ(R/mRm)G\mathcharDispμ(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 m1m\geq1, the natural functor

G\mathcharF\mathcharGaugeμ(S/am)G\mathcharDispμ(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=GLNG=\operatorname{GL}_N.

Sources & referencesView supporting material

Primary source

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

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