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つづき

The revolutionary work of Hacon-McKernan, Takayama and Birkar-Cascini-Hacon-
McKernan ([14], [15], [28], [3]) appeared shortly after the publication of [21], and these
papers have led to some changes of perspectives on multiplier ideals. In particular, the first
three made clear the importance of adjoint ideals as a tool in proving extension theorems;
these were not so clearly in focus at the time [21] was written. I have taken this new viewpoint
into account in discussing the restriction theorem in Lecture 3. Adjoint ideals also open the
door to an extremely transparent presentation of Siu’s theorem on deformation-invariance
of plurigenera of varieties of general type, which appears in Lecture 5.
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