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The main result is that for lambda strong limit singular failing the continuum hypothesis (i.e. 2^lambda > lambda^+), a polarized partition theorem holds.

Logic · Mathematics 2009-09-25 Saharon Shelah

We prove an effective vanishing theorem for direct images of log pluricanonical bundles of projective semi-log canonical pairs. As an application, we obtain a semipositivity theorem for direct images of relative log pluricanonical bundles…

Algebraic Geometry · Mathematics 2018-02-16 Osamu Fujino

We prove the Nonvanishing Theorem for threefolds over an algebraically closed field $k$ of characteristic $p >5$.

Algebraic Geometry · Mathematics 2019-05-29 Chenyang Xu , Lei Zhang

In this paper we give an elementary proof of the Zariski-Lipman conjecture for log canonical spaces.

Algebraic Geometry · Mathematics 2015-01-12 Stefan Heuver

In this paper we prove the Zariski-Lipman conjecture for log canonical spaces.

Algebraic Geometry · Mathematics 2017-05-17 Stéphane Druel

We prove the existence of log canonical modifications for a log pair. As an application, together with Koll\"ar's gluing theory, we remove the assumption in the first named author's work [Odaka11], which shows that K-semistable polarized…

Algebraic Geometry · Mathematics 2012-01-04 Yuji Odaka , Chenyang Xu

We give a new proof of the finiteness of B-representations. As a consequence of the finiteness of B-representations and Koll\'ar's gluing theory on lc centers, we prove that the (relative) abundance conjecture for slc pairs is implied by…

Algebraic Geometry · Mathematics 2012-05-23 Christopher Hacon , Chenyang Xu

We prove a result on the inversion of adjunction for log canonical pairs that generalizes Kawakita's result to log canonical centers of arbitrary codimension.

Algebraic Geometry · Mathematics 2012-02-03 Christopher D. Hacon

We prove Koll\'ar's effective base point free theorem for log canonical pairs.

Algebraic Geometry · Mathematics 2009-07-13 Osamu Fujino

We show that the Generalized Vanishing Conjecture $$\forall_{m \ge 1} [\Lam^m f^m = 0] \Longrightarrow \forall_{m \gg 0} [\Lam^m (g f^m) = 0]$$ for a fixed differential operator $\Lam \in k[\partial]$ follows from a special case of it,…

Commutative Algebra · Mathematics 2013-10-24 Michiel de Bondt

We show that the anti-canonical bundle of any $\mathbb Q$-factorial surface is numerically effective if and only if it is pseudo-effective. To prove this, we establish a numerical non-vanishing theorem for surfaces polarized with…

Algebraic Geometry · Mathematics 2024-10-22 Jihao Liu , Lingyao Xie

We prove a canonical bundle formula for generically finite morphisms in the setting of generalized pairs (with $\mathbb{R}$-coefficients). This complements Filipazzi's canonical bundle formula for morphisms with connected fibres. It is then…

Algebraic Geometry · Mathematics 2020-11-19 Jingjun Han , Wenfei Liu

We prove several results relating the nonvanishing and the existence of good minimal models of different pairs that have the same underlying variety.

Algebraic Geometry · Mathematics 2026-03-26 Vladimir Lazić

In this note, we extend the theories of the canonical bundle formula and adjunction to the case of generalized pairs. As an application, we study a particular case of a conjecture by Prokhorov and Shokurov.

Algebraic Geometry · Mathematics 2021-08-12 Stefano Filipazzi

We prove a combination theorem for PD(n)-pairs.

Group Theory · Mathematics 2018-12-31 Rita Gitik

We consider versions of the local duality theorem in $\mathbb{C}^n$. We show that there exist canonical pairings in these versions of the duality theorem which can be expressed explicitly in terms of residues of Grothendieck, or in terms of…

Complex Variables · Mathematics 2019-11-13 Richard Lärkäng

We establish a Koll\'ar-type gluing theory for NQC generalized log canonical pairs and use it to prove semi-ampleness results of NQC generalized pairs. As consequences, we prove the existence of flips for any NQC generalized log canonical…

Algebraic Geometry · Mathematics 2023-06-05 Jihao Liu , Lingyao Xie

We formulate a generalization of Vojta's conjecture in terms of log pairs and variants of multiplier ideals. In this generalization, a variety is allowed to have singularities. It turns out that the generalized conjecture for a log pair is…

Number Theory · Mathematics 2016-10-13 Takehiko Yasuda

We prove the finiteness of log pluricanonical representations for projective log canonical pairs with semi-ample log canonical divisor. As a corollary, we obtain that the log canonical divisor of a projective semi log canonical pair is…

Algebraic Geometry · Mathematics 2012-04-10 Osamu Fujino , Yoshinori Gongyo

We prove the finiteness of relative log pluricanonical representations in the complex analytic setting. As an application, we discuss the abundance conjecture for semi-log canonical pairs within this framework. Furthermore, we establish the…

Algebraic Geometry · Mathematics 2025-06-03 Osamu Fujino