Precise inversion of adjunction conjecture for minimal log discrepancies

Let (X,a)(X,\mathfrak{a}) be a log pair, let DD be a normal Cartier prime divisor, and let xDx\in D be a closed point. Suppose that DD is not contained in the cosupport of the R\mathbb{R}-ideal sheaf a\mathfrak{a}. PIA conjecture. One has

mldx(X,aOX(D))=mldx(D,aOD).\operatorname{mld}_x\bigl(X,\mathfrak{a}\mathcal{O}_X(-D)\bigr)=\operatorname{mld}_x\bigl(D,\mathfrak{a}\mathcal{O}_D\bigr).

This is the precise inversion of adjunction statement studied in the paper; the supplied text does not establish its general resolution status.

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Primary source

Yusuke Nakamura and Kohsuke Shibata, “Inversion of adjunction for quotient singularities II: Non-linear actions”, arXiv:2112.09502 (2024).

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