The ACC conjecture for lc thresholds of adjoint foliated structures

Let (X,F,B,t)(X,\mathcal{F},B,t) be an adjoint foliated structure, with B=Bninv+BinvB=B^{\operatorname{ninv}}+B^{\operatorname{inv}}, and let DD be an R\mathbb{R}-divisor. The ACC conjecture for lc thresholds of adjoint foliated structures. For every positive integer dd, real number t[0,1]t\in[0,1], and DCC set Γ[0,+)\Gamma\subset[0,+\infty), there is an ACC set Γ\Gamma' such that, whenever dimX=d\dim X=d, B,t,DΓB,t,D\in\Gamma, one has

sup{s[0,1](X,F,B+s(Dninv+(1t)Dinv),t) is lc}Γ.\sup\{s\in[0,1]\mid (X,\mathcal{F},B+s(D^{\operatorname{ninv}}+(1-t)D^{\operatorname{inv}}),t)\text{ is lc}\}\in\Gamma'.

The paper lists this among three widely open ACC conjectures, including in dimension two.

Sources & referencesView supporting material

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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