| Budget Amount *help |
¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
We study extremal contraction morphisms f to S of a terminal threefold X such that the inverse image F of a point s is a curve, and try to classify the neighbourhood of F especially when F is irreducible. They consist of three kinds, flipping contractions, divisorial contractions, and Q-conic bundles. Among them, flipping contractions were classified, and the other two kinds are studied. There are at most two non-Gorenstein points on F, and the classification of the case of one non-Gorenstein point has been completed.
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