Decomposable Iitaka fibration conjecture without the Q-factorial assumption
Decomposable Iitaka fibration conjecture without the Q-factorial assumption
Let be a positive integer and let be a DCC set. A -decomposable Iitaka fibration is the decomposition notion defined for invariant Iitaka fibrations; its strong version additionally requires the relevant rounded linear systems to be birational.
Decomposable Iitaka fibration conjecture. There exist a positive integer , a finite set , and a DCC set , depending only on and , such that every lc pair of dimension with , , and either finite or all components of -Cartier, has both the weak and strong decomposable Iitaka fibration properties.
This is presented as a stronger variant of the earlier decomposable Iitaka fibration conjecture and remains open in the supplied context.
Sources & referencesView supporting material
Primary source
Guodu Chen, Jingjun Han and Jihao Liu, “On effective log Iitaka fibrations and existence of complements”, arXiv:2301.04813 (2023).
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