The codimension-one-nef formulation of the numerical-dimension conjecture
The codimension-one-nef formulation of the numerical-dimension conjecture
Let be a projective manifold, let be an irreducible curve with ample normal sheaf, and let be an -divisor which is nef in codimension .
Codimension-one-nef formulation. If
then
The source presents this as an equivalent formulation of the conjecture that a pseudo-effective line bundle orthogonal to a curve with ample normal sheaf has numerical dimension zero, via divisorial Zariski decomposition. It remains open in general.
Sources & referencesView supporting material
Primary source
Thomas Peternell, “Compact subvarieties with ample normal bundles, algebraicity and cones of cycles”, arXiv:1106.4433 (2011).
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