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Subadjunction of log canonical divisors for a subvariety of codimension 2

Yujiro Kawamata
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Abstract

We obtain a formula which relates the log canonical divisor of the ambient space with that of a subvariety of codimension 2 by using Knudsen's moduli space of pointed stable curves of genus 0.

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Yujiro Kawamata. 1995-11-24. Subadjunction of log canonical divisors for a subvariety of codimension 2. https://arxiv.org/abs/alg-geom/9511015

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