Hacon–McKernan's uniformity conjecture for the Iitaka fibration

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Let XX be a smooth projective variety of dimension nn and Kodaira dimension κ\kappa, and let ϕ∣mKX∣\phi_{|mK_X|} denote the rational map defined by the pluricanonical linear system ∣mKX∣|mK_X|. The Iitaka fibration of XX is the fibration associated with its pluricanonical sections, and a positive integer is sufficiently divisible when it satisfies the divisibility conditions required for this map to be defined. Hacon–McKernan's conjecture. There is a positive integer mn,κm_{n,\kappa} such that for any m≥mn,κm\geq m_{n,\kappa} sufficiently divisible, ϕ∣mKX∣\phi_{|mK_X|} is birationally equivalent to the Iitaka fibration of XX for all smooth projective varieties XX of dimension nn and Kodaira dimension κ\kappa. This conjecture asserts uniformity of the pluricanonical realization of the Iitaka fibration across varieties with fixed dimension and Kodaira dimension; the supplied source does not indicate whether it has been resolved.

References

Primary source

Gabriele Di Cerbo, “Uniform bounds for the Iitaka fibration”, arXiv:1111.6662 (2011).

Additional references

2 papers in this index state this conjecture (2010–2011). The statement above is taken from the most recent of them; the others are arXiv:1012.3817.

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