Uniform p-adic proximity conjecture for canonical-lift torsion points

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Let Cp{\mathbb C}_p be the completion of the algebraic closure of Qp{\mathbb Q}_p, with vv the extension of the pp-adic valuation, and let

O=OCp:={x∈Cp∣v(x)≥0}{\mathcal O}={\mathcal O}_{{\mathbb C}_p}:=\{x\in{\mathbb C}_p\mid v(x)\geq 0\}

be its ring of integers. Let Z⊆XCpZ\subseteq{\mathcal X}_{{\mathbb C}_p} be a closed subvariety, and let λ(Z,⋅)\lambda(Z,\cdot) be a pp-adic proximity function for ZZ. Uniform p-adic proximity conjecture. There is a rational number q∈Qq\in{\mathbb Q} such that, for every point ξ∈X(Cp)\xi\in{\mathcal X}({\mathbb C}_p) that is a torsion point of a canonical-lift fibre, either ξ∈Z(Cp)\xi\in Z({\mathbb C}_p) or

λ(Z,ξ)≤q.\lambda(Z,\xi)\leq q.

The preceding argument establishes such a uniform bound when ZZ is special; the conjecture asserts that this restriction on ZZ is unnecessary.

References

Primary source

Thomas Scanlon, “Local André-Oort conjecture for the universal abelian variety”, arXiv:math/0409066 (2004).

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