ScalingStacks

Remark 3.9 . [04XM]

Original official author HTML, exact retained edition. Historical TeX conversion verdicts remain unchanged. Cited-edition alignment and mathematical self-containment are not assessed.

Complete original source context · Original author HTML

Remark 3.9.

A refinement of the proof shows that the equality ρA=ρ𝒫\rho_{A}=\rho_{\mathscr{P}} remains valid if we only assume that AA has semi-abelian reduction; then the non-archimedean uniformization of AA takes the form π:Ean→Aan\pi:E^{\mathrm{an}}\to A^{\mathrm{an}}, where EE is an extension of an abelian KK-variety BB with good reduction by a split KK-torus TT. The dimension of TT is precisely the toric rank of 𝒜ko\mathscr{A}^{o}_{k}, the identity component of the special fiber of the Néron model of AA. The Künnemann-Mumford construction produces a relatively complete model 𝒫~\widetilde{\mathscr{P}} of EE that is a Zariski-locally trivial fibration in torus embeddings over the Néron model of BB. Since we do not need this generalization in this paper, we omit the details.

Original mathematics by the credited authors. Source-backed reader collection; mathematical self-containment is not assessed.