Beauville–Bogomolov decomposition conjecture for manifolds with nef anticanonical class
Beauville–Bogomolov decomposition conjecture for manifolds with nef anticanonical class
Let be a compact Kähler manifold with nef anticanonical class. Denote its universal cover by . Decomposition conjecture. The universal cover decomposes as a product
where the are irreducible Calabi–Yau manifolds, the are irreducible hyperkähler manifolds, and is a rationally connected manifold. This is an analogue of the Beauville–Bogomolov decomposition theorem. The conjecture has been proved under the stronger assumptions that is nef, is hermitian semipositive, or the general fibre of the Albanese map is weak Fano.
Sources & referencesView supporting material
Primary source
Junyan Cao and Andreas Höring, “A decomposition theorem for projective manifolds with nef anticanonical bundle”, arXiv:1706.08814 (2017).
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