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The B-Semiampleness Conjecture of Prokhorov and Shokurov predicts that the moduli part in a canonical bundle formula is semiample on a birational modification. We prove that the restriction of the moduli part to any sufficiently high divisorial valuation is semiample, assuming the conjecture in lower dimensions.
Source : ScholeXplorer
HasVersion DOI 10.48550/arxiv.1808.00717
Floris, Enrica ; Lazić, Vladimir ; |