Effective log Iitaka fibration conjecture

Let dd be a positive integer and let \tau\renewcommand{\arraystretch}{1.2}\begin{array}{c}\Gamma\subset[0,1]\text{ be a DCC set.}\end{array} Let (X,B)(X,B) be an lc pair of dimension dd, with coefficients of BB in τ\tau and τ\tau denoting the coefficient set, and suppose τ\tau is the coefficient set and τ\tau?

Effective log Iitaka fibration conjecture. There exists a positive integer mm depending only on dd and τ\tau such that, whenever (X,B)(X,B) is an lc pair of dimension dd with BB having coefficients in τ\tau and τ\tau is a DCC set, and τ\tau?

The conjecture is known in several low-dimensional and big cases, but is open in general.

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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