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Related papers: ACC for log canonical threshold polytopes

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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

In characteristic zero, quotient singularities are log terminal. Moreover, we can check whether a quotient variety is canonical or not by using only the age of each element of the relevant finite group if the group does not have…

Algebraic Geometry · Mathematics 2019-10-07 Takahiro Yamamoto

The problem when the order polytope and the chain polytope of a finite partially ordered set are unimodularly equivalent will be solved.

Combinatorics · Mathematics 2012-08-21 Takayuki Hibi , Nan Li

In this paper, we show the existence of uniform rational lc polytopes for foliations with functional boundaries in dimension $\leq 3$. As an application, we prove the global ACC for foliated threefolds with arbitrary DCC coefficients. We…

Algebraic Geometry · Mathematics 2024-06-06 Jihao Liu , Fanjun Meng , Lingyao Xie

In this paper, we generalise the theory of complements to log canonical log fano varieties and prove boundedness of complements for them in dimension less than or equal to 3. We also prove some boundedness results for the canonical index of…

Algebraic Geometry · Mathematics 2019-01-15 Yanning Xu

Let $X$ be a smooth hypersurface of degree $n\geq 3$ in $\mathbb{P}^n$. We prove that the log canonical threshold of $H\in|-K_X|$ is at least $\frac{n-1}{n}$. Under the assumption of the Log minimal model program, we also prove that a…

Algebraic Geometry · Mathematics 2007-05-23 Ivan Cheltsov , Jihun Park

1) Assuming log Minimal Model Conjecture, we give a construction of a complete moduli space of stable log pairs of arbitrary dimension generalizing directly the space M_{g,n} of pointed stable curves. Each stable pair has semi log canonical…

alg-geom · Mathematics 2008-02-03 Valery Alexeev

We completely prove the ACC for minimal log discrepancies on smooth threefolds. It implies on smooth threefolds the ACC for a-lc thresholds, the uniform m-adic semi-continuity of minimal log discrepancies and the boundedness of the log…

Algebraic Geometry · Mathematics 2023-12-29 Masayuki Kawakita

We prove the special termination for log canonical pairs and its generalisation in the context of generalised pairs.

Algebraic Geometry · Mathematics 2023-12-14 Vladimir Lazić , Joaquín Moraga , Nikolaos Tsakanikas

We show the finiteness of log pluricanonical representations under the assumption of the existence of a good minimal model.

Algebraic Geometry · Mathematics 2025-01-29 Osamu Fujino , Jinsong Xu

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

In this paper, we study transcendental aspects of the cohomology groups of adjoint bundles of log canonical pairs, aiming to establish an analytic theory for log canonical singularities. As a result, in the case of purely log terminal…

Complex Variables · Mathematics 2020-05-12 Shin-ichi Matsumura

Let $Y$ be a generic link of a subvariety $X$ of a nonsingular variety $A$. We give a description of the Grauert-Riemenschneider canonical sheaf of $Y$ in terms of the multiplier ideal sheaves associated to $X$ and use it to study the…

Algebraic Geometry · Mathematics 2013-06-20 Wenbo Niu

We prove inversion of adjunction on log canonicity.

Algebraic Geometry · Mathematics 2009-11-11 Masayuki Kawakita

In this article we prove the following boundedness result: Fix a DCC set $I\subset [0, 1]$. Let $\mathfrak{D}$ be the set of all log pairs $(X, \Delta)$ satisfying the following properties: (i) $X$ is a projective surface defined over an…

Algebraic Geometry · Mathematics 2020-11-10 Omprokash Das

We give an explicit formula for the log-canonical threshold of a reduced germ of plane curve. The formula depends only on the first two maximal contact values of the branches and their intersection multiplicities. We also improve the two…

Algebraic Geometry · Mathematics 2016-04-06 C. Galindo , F. Hernando , F. Monserrat

In this paper, we prove a `cut-by-curves criterion' for an overconvergent isocrystal on a smooth variety over a field of characteristic $p>0$ to extend logarithmically to its smooth compactification whose complement is a strict normal…

Number Theory · Mathematics 2009-06-25 Atsushi Shiho

Minimal log discrepancies (mld's) are related not only to termination of log flips, and thus to the existence of log flips but also to the ascending chain condition (acc) of some global invariants and invariants of singularities in the Log…

Algebraic Geometry · Mathematics 2007-05-23 Caucher Birkar , V. V. Shokurov

In this article we prove the existence of a canonical theta structure for the canonical lift of an ordinary abelian variety.

Number Theory · Mathematics 2007-05-23 Robert Carls

We present an extension of several results on pairs and varieties to foliated surface pairs. We prove the boundedness of local complements, the local index theorem, and the uniform boundedness of minimal log discrepancies (mlds), as well as…

Algebraic Geometry · Mathematics 2024-06-07 Jihao Liu , Fanjun Meng , Lingyao Xie
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