Existence of good minimal models for klt adjoint foliated structures
Existence of good minimal models for klt adjoint foliated structures
Let be a projective klt adjoint foliated structure, and set
Assume that is pseudo-effective and . Existence of good minimal models. The structure has a good minimal model: there exists a -negative birational contraction such that is semi-ample. If is big, then has a canonical model: there exists a -non-positive birational contraction such that is ample. Moreover, is unique, and if is rational, then
This is a conjectural BCHM-type statement for adjoint foliated structures, strengthening the theorem discussed immediately beforehand. It predicts existence of good minimal models in the pseudo-effective case and canonical models in the big case, including uniqueness and the stated Proj description for rational .
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Primary source
Paolo Cascini, Jingjun Han, Jihao Liu, Fanjun Meng, Calum Spicer, Roberto Svaldi and Lingyao Xie, “On finite generation and boundedness of adjoint foliated structures”, arXiv:2504.10737 (2025).
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