Compactifiable universal cover conjecture for compact Kähler manifolds

About 14 years old · traced to

Let XX be a compact Kähler manifold with infinite fundamental group π1(X)\pi_1(X). Suppose that its universal cover X~univ⁡\widetilde{X}_{\operatorname{univ}} is a Zariski open subset

X~univ⁡⊂X‾\widetilde{X}_{\operatorname{univ}}\subset\overline{X}

of some compact complex manifold X‾\overline{X}. A finite étale cover of XX is understood in the assertion below.

Compactifiable universal cover conjecture. After passing to a finite étale cover, there exists a locally trivial fibration X→AX\rightarrow A with simply connected fibre FF onto a complex torus AA. In particular,

X~univ⁡≃F×Cdim⁡A.\widetilde{X}_{\operatorname{univ}}\simeq F\times\mathbb{C}^{\dim A}.

This conjecture generalises Iitaka's classical conjecture that a compact Kähler manifold uniformised by Cdim⁡X\mathbb{C}^{\dim X} is an étale quotient of a complex torus; it predicts, in particular, strong restrictions on the fundamental group of a compact Kähler manifold with compactifiable universal cover.

References

Primary source

Benoît Claudon and Andreas Hoering, “Compact Kähler manifolds with compactifiable universal cover”, arXiv:1205.1415 (2012).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.