Combinatorial analysis of point obstructions to local factorizability in three-folds

Mary Schaps

Research output: Contribution to journalArticlepeer-review

Abstract

The paper introduces formally the concept of local factorizability used in earlier factorizability work, identifies the basic form of obstructions to local factorizability of birational morphisms, and outlines a combinatorial technique for analyzing such obstructions. As an application and illustration, two open cases in the classification of birational morphisms with small canonical divisors are settled.

Original languageEnglish
Pages (from-to)397-458
Number of pages62
JournalHokkaido Mathematical Journal
Volume18
Issue number3
DOIs
StatePublished - Feb 1989

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