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On the Transcendence of Period Images
[article]

2021
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arXiv
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pre-print

Let f : X → S be a family of smooth projective algebraic varieties over a smooth connected base S, with everything defined over ℚ. Denote by 𝕍 = R^2i f_*ℤ(i) the associated integral variation of Hodge structure on the degree 2i cohomology. We consider the following question: when can a fibre 𝕍_s above an algebraic point s ∈ S(ℚ) be isomorphic to a transcendental fibre 𝕍_s' with s' ∈ S(ℂ) ∖ S(ℚ)? When 𝕍 induces a quasi-finite period map φ : S →Γ\ D, conjectures in Hodge theory predict that such

arXiv:2106.09342v1
fatcat:6a65zpaapnbo7kj64yviyjodnq