Lehmann's diminished-ideal containment conjecture

Let XX be a smooth variety, let LL be a pseudo-effective R\mathbb{R}-divisor on XX, and let TminT_{\min} be a current of minimal singularities in the numerical class of LL. Write J(Tmin)\mathcal{J}(T_{\min}) for its multiplier ideal and Jσ(L)\mathcal{J}_{\sigma}(L) for the diminished ideal of LL. Lehmann's diminished-ideal containment conjecture. One has

J(Tmin)Jσ(L).\mathcal{J}(T_{\min})\subset \mathcal{J}_{\sigma}(L).

This is the natural pseudo-effective analogue of the big-divisor equality conjecture. The text says that the containment can be strict in examples and that the author's main theorem proves it for most pseudo-effective divisors, but leaves the general case open.

Sources & referencesView supporting material

Primary source

Brian Lehmann, “Algebraic bounds on analytic multiplier ideals”, arXiv:1109.4452 (2013).

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