Shafarevich conjecture for varieties with large fundamental group
Let be a smooth complex projective variety. Its fundamental group is large if, for every closed irreducible positive-dimensional subvariety , the image
is infinite. Shafarevich conjecture. If has a large fundamental group, then its universal covering is Stein. This is a partial converse to the fact that Stein universal covers contain no positive-dimensional compact subvarieties. The source states that the conjecture remains open in full generality, although the linear case is known.
References
Primary source
Ya Deng, “Topology, Hyperbolicity, and the Shafarevich Conjecture for Complex Algebraic Varieties”, arXiv:2512.24458 (2025).
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