Sources of log canonical centers

Published 14 Jul 2011 in math.AG | (1107.2863v3)

Abstract: We define the "source" and the "spring" of a log canonical center and use them to solve several problems in higher-codimension adjunction. The main application is to the construction of semi log canonical pairs. Version 2: References updated. Version 3: Many small changes.

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János Kollár

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