Generalized Brunella's conjecture for foliations with ample determinant of the normal bundle

Let XX be a compact connected complex manifold of dimension n3n\geq 3, and let F{\mathscr{F}} be a holomorphic foliation of codimension r<nr<n on XX. Suppose that the determinant det(NF)\det(N{\mathscr{F}}) is ample.

Generalized Brunella's conjecture. If n2r+1n\geq 2r+1, then every leaf of F{\mathscr{F}} accumulates to the singular set Sing(F){\rm Sing}({\mathscr{F}}).

This extends Brunella's codimension-one question to higher-codimension foliations. The source attributes the natural conjecture to Camacho--Perrone and indicates that the codimension-one case is known in the projective cyclic-Picard setting; the generalized statement remains open.

Sources & referencesView supporting material

Primary source

Mauricio Corrêa, Arturo Fernández-Pérez and Marcio G. Soares, “Brunella-Khanedani-Suwa variational residues for invariant currents”, arXiv:1802.09093 (2018).

Additional references

2 papers in this index state this conjecture (2014–2018). The statement above is taken from the most recent of them; the others are arXiv:1403.4286.

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