Birational maps of 3-folds
classification
🧮 math.AG
keywords
contractionsdivisorialfoldsmoothbirationalblow-downscurvediscrepancies
read the original abstract
We show that 3-fold terminal flips and divisorial contractions may be factored into a sequence of flops, blow-downs to a smooth curve in a smooth 3-fold or divisorial contractions to points with minimal discrepancies.
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