The MH(G)\mathfrak{M}_H(G)-conjecture for arithmetic Iwasawa modules

Let F/FF_\infty/F be a pp-adic Lie extension containing FcycF^{\mathrm{cyc}}, with G=Gal(F/F)G={\mathrm{Gal}}(F_\infty/F) and H=Gal(F/Fcyc)H={\mathrm{Gal}}(F_\infty/F^{\mathrm{cyc}}). For a finitely generated Λ(G)\Lambda(G)-module MM, let M(p)M(p) denote its Zp{\mathbb Z}_p-torsion submodule, and define MH(G)\mathfrak{M}_H(G) to be the category of finitely generated Λ(G)\Lambda(G)-modules for which M/M(p)M/M(p) is finitely generated over Λ(H)\Lambda(H). Let EE be as above and define

X(E/F):=Homcts(Sel(E/F),Qp/Zp).X(E/F_\infty):={\mathrm{Hom}}_{\rm cts}({\mathrm{Sel}}(E/F_\infty),{\mathbb {Q}}_p/{\mathbb {Z}}_p).

MH(G)\mathfrak{M}_H(G)-conjecture. The Iwasawa module X(E/F)X(E/F_\infty) belongs to the category MH(G)\mathfrak{M}_H(G). This is the non-commutative Iwasawa-theoretic expectation that arithmetic torsion Λ(G)\Lambda(G)-modules satisfy the indicated finiteness condition; the source gives no general resolution.

Sources & referencesView supporting material

Primary source

Li-Tong Deng, Yukako Kezuka, Yong-Xiong Li and Meng Fai Lim, “Non-commutative Iwasawa theory of abelian varieties over global function fields”, arXiv:2405.20963 (2025).

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