On abundance theorem for semi log canonical threefolds
\textit{O. Fujino} [Duke Math. J. 102, 513-532 (2000; Zbl 0986.14007)] proved an abundance theorem for semi log canonical threefolds. In the present paper he gives an exposition of his theorem. His theorem is a generalization of the log abundance theorem for threefolds shown by \textit{S. Keel, K. Matsuki} and \textit{J. McKernan} [Duke Math. J. 75, 99-119 (1994; Zbl 0818.14007)].
scientific article; zbMATH DE number 1375155
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