Pullback description conjecture for movable classes annihilated by a semiample-type class
Pullback description conjecture for movable classes annihilated by a semiample-type class
Let be a surjective holomorphic map between compact Kähler manifolds of dimensions and , respectively, and let be a Kähler class on . Set . For a movable class on satisfying , pullback description conjecture. There should exist compact Kähler manifolds and , bimeromorphic holomorphic maps and , a holomorphic map , and a pseudoeffective class on such that
\begin{tikzcd} X' \arrow{r}{\pi} \arrow{d}{\varphi'} & X \arrow{d}{\varphi} \\ Y' \arrow{r}{\mu}& Y \end{tikzcd}and
This asks whether the geometric description known in the semiample projective setting extends to the transcendental Kähler setting; the source presents it as a natural question and leaves it open.
Sources & referencesView supporting material
Primary source
Jiajun Hu and Jian Xiao, “Positivity in the shadow of Hodge index theorem”, arXiv:2505.06626 (2025).
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