McKernan's ACC conjecture for interpolated thresholds of nested foliations

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Let XX be a normal variety of dimension dd, and let F⊂G⊂TX\mathcal{F}\subset\mathcal{G}\subset T_X be foliations. McKernan's nested-foliation ACC conjecture. For every positive integer dd, there is an ACC set Γ=Γ(d)⊂[0,1]\Gamma=\Gamma(d)\subset[0,1] such that

sup⁡{t∈[0,1]∣(G,F,t) is lc}∈Γ.\sup\{t\in[0,1]\mid(\mathcal{G},\mathcal{F},t)\text{ is lc}\}\in\Gamma.

This is presented as a more general version of the interpolated lc-threshold ACC conjecture and remains unresolved in the stated generality.

References

Primary source

Paolo Cascini, Jingjun Han, Jihao Liu, Fanjun Meng, Calum Spicer, Roberto Svaldi and Lingyao Xie, “Minimal model program for algebraically integrable adjoint foliated structures”, arXiv:2408.14258 (2024).

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