Conjecture on density of indices computing the limiting minimal log discrepancy

With the notation of the limiting setup, let WiW_i be varieties with log terminal singularities, and fix r1,,rkR0r_1,\ldots,r_k\in\mathbb{R}_{\ge0}. For each ii, let oiWio_i\in W_i and let aij\mathfrak{a}_{ij} be the corresponding ideals; write WW, oo, and aj\mathfrak{a}_j for the limiting objects, and let IlII_l\subseteq I be the subsets from the limiting construction. Define

J:={iImldoi(Wi,jaijrj)=mldo(W,jajrj)}.J:=\left\{i\in I\mathrel{\big|}\operatorname{mld}_{o_i}\left(W_i,\prod_j\mathfrak{a}_{ij}^{r_j}\right)=\operatorname{mld}_o\left(W,\prod_j\mathfrak{a}_j^{r_j}\right)\right\}.

Density conjecture. The intersection IlJI_l\cap J is dense for every ll.

This extends the preceding special case concerning constancy of minimal log discrepancies and is the analogue for minimal log discrepancies of the corresponding density statement for log canonical thresholds. The source does not provide evidence resolving the conjecture.

Sources & referencesView supporting material

Primary source

Masayuki Kawakita, “Discreteness of log discrepancies over log canonical triples on a fixed pair”, arXiv:1204.5248 (2012).

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