2019
DOI: 10.46298/epiga.2019.volume3.5063
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On the B-Semiampleness Conjecture

Abstract: 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. Comment: 26 pages

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Cited by 8 publications
(10 citation statements)
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“…In this section, we prove Theorems 1.4 and 1.5. The proof of Theorem 1.4 is similar to [Hu20, Subsection 3.4] (see also [FL19,Proposition 4.4]) whose ideas were originated in [FG14]. For the reader's convenience, we give a full proof here.…”
Section: Canonical Bundle Formula: the General Casementioning
confidence: 96%
“…In this section, we prove Theorems 1.4 and 1.5. The proof of Theorem 1.4 is similar to [Hu20, Subsection 3.4] (see also [FL19,Proposition 4.4]) whose ideas were originated in [FG14]. For the reader's convenience, we give a full proof here.…”
Section: Canonical Bundle Formula: the General Casementioning
confidence: 96%
“…In this paper we consider a connected divisor T = ∪T and assume the B-Semiampleness Conjecture in lower dimension. In [FL19] we proved that the divisor M Y | T is semiample for every T . In this work we show that we can glue the global sections of mM Y | T to obtain global sections of mM Y | T .…”
Section: Introductionmentioning
confidence: 95%
“…Remark 2.10. As in [FL19], we adopt here the notation B f , M f for the discriminant and moduli part of f instead of the usual one B Y , M Y . We will occasionally write B Y , M Y when the fibration is clear from the contest.…”
Section: Canonical Bundle Formulamentioning
confidence: 99%
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“…Finally, we should point out that [Flo14,FL19] develop inductive approaches towards the effective adjunction conjecture from other perspectives. It is an interesting question to adopt their methods in the current context.…”
Section: Introductionmentioning
confidence: 99%