Jonsson–Mustaţă's weak and strong conjectures for asymptotic log canonical thresholds

Let XX be a regular algebraic variety over a field of characteristic zero. Let a\mathfrak{a}_{\bullet} be a graded sequence of ideals on XX, and let q\mathfrak{q} be a nonzero ideal on XX such that lctq(a)<\mathrm{lct}^{\mathfrak{q}}(\mathfrak{a}_{\bullet})<\infty. A valuation vValXv\in\mathrm{Val}_X^* computes lctq(a)\mathrm{lct}^{\mathfrak{q}}(\mathfrak{a}_{\bullet}) when

lctq(a)=A(v)+v(q)v(a).\mathrm{lct}^{\mathfrak{q}}(\mathfrak{a}_{\bullet})=\frac{A(v)+v(\mathfrak{q})}{v(\mathfrak{a}_{\bullet})}.

Algebraic version of Jonsson–Mustaţă's conjecture. There exists a quasi-monomial valuation vValXv\in\mathrm{Val}_X^* that computes lctq(a)\mathrm{lct}^{\mathfrak{q}}(\mathfrak{a}_{\bullet}).

This is a conjecture on the structure of valuations computing asymptotic jumping numbers. The source presents it as closely related to further Jonsson–Mustaţă conjectures; its resolution status is not specified here.

Sources & referencesView supporting material

Primary source

Shijie Bao, Qi'an Guan and Lin Zhou, “Algebraic Zhou valuations”, arXiv:2505.19451 (2025).

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