Ramachandran's Bochner–Hartogs or surface-group dichotomy

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Let XX be a smooth projective variety with a type B Zariski-dense representation ρ:π1(X)⟶G\rho:\pi_{1}(X)\longrightarrow G to a Lie group GG defined over a local field KK, and set H=ker⁡(ρ)H=\ker(\rho). Assume that HH is finite. The Bochner–Hartogs property for X~\widetilde{X} means that for every compactly supported (0,1)(0,1)-form α∈Ac0,1(X~)\alpha\in A^{0,1}_{c}(\widetilde{X}) with ∂ˉα=0\bar\partial\alpha=0, there is a compactly supported smooth function u∈Cc∞(X~)u\in C^{\infty}_{c}(\widetilde{X}) such that ∂ˉu=α\bar\partial u=\alpha.

Ramachandran's conjecture. One of the following holds: the universal cover X~\widetilde{X} has the Bochner–Hartogs property, or π1(X)\pi_{1}(X) is commensurable with the fundamental group of a compact Riemann surface.

The paper attributes this question to M. Ramachandran and presents it as a possible application of the Shafarevich–Kollár conjecture. The supplied text gives no resolution status.

References

Primary source

Ludmil Katzarkov, “Factorization theorems for the representations of the fundamental groups of quasiprojective varieties and some applications”, arXiv:alg-geom/9402012 (1994).

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