The virtually nilpotent fundamental-group conjecture for h-special and special varieties

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Let XX be an hh-special or special smooth quasi-projective variety, where hh-special means that the relation on pairs of points generated by chains of entire curves is Zariski dense in X×XX\times X.

Nilpotency conjecture. The fundamental group π1(X)\pi_1(X) is virtually nilpotent.

This is presented as the revision of Campana's virtually abelian conjecture for non-compact smooth quasi-projective varieties. It is a restatement of the revised conjecture already given earlier in the paper, so it is merged with that row.

References

Primary source

Benoit Cadorel, Ya Deng and Katsutoshi Yamanoi, “Hyperbolicity and fundamental groups of complex quasi-projective varieties (III): applications”, arXiv:2512.20360 (2025).

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