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arXiv · 1911.00991

Extracting non-canonical places

Joaquín Moraga
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Abstract

Let $(X,B)$ be a log canonical pair and $\mathcal{V}$ be a finite set of divisorial valuations with log discrepancy in $[0,1)$. We prove that there exists a projective birational morphism $\pi \colon Y\rightarrow X$ so that the exceptional divisors are $\mathbb{Q}$-Cartier and correspond to elements of $\mathcal{V}$. We study how two such models are related. Moreover, we provide an application to the study of deformations of log canonical singularities.

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Joaquín Moraga. 2019-11-03. Extracting non-canonical places. https://arxiv.org/abs/1911.00991

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