The pointed Shafarevich conjecture for moduli spaces

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Let M\mathcal{M} be the relevant moduli stack of polarized smooth proper varieties with semi-ample canonical bundle. Let UU be a variety over C\mathbb{C} admitting a quasi-finite morphism

U→M⊗QC.U\to\mathcal{M}\otimes_{\mathbb{Q}}\mathbb{C}.

Let CC be a smooth quasi-projective connected curve over C\mathbb{C}, with c∈C(C)c\in C(\mathbb{C}), and let u∈U(C)u\in U(\mathbb{C}).

Pointed Shafarevich conjecture. The set of morphisms f:C→Uf:C\to U satisfying f(c)=uf(c)=u is finite. This predicts finiteness of families over a curve after fixing one fibre over one marked point. The source states special cases, including proper UU, one-dimensional moduli, curves, and varieties with a quasi-finite period map, but leaves the general case open.

References

Primary source

Ariyan Javanpeykar, Ruiran Sun and Kang Zuo, “The Shafarevich conjecture revisited: Finiteness of pointed families of polarized varieties”, arXiv:2005.05933 (2024).

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