中文
相关论文

相关论文: On the Log Discrepancies in Toric Mori Contraction…

200 篇论文

We verify a special case of V. V. Shokurov's conjecture about characterization of toric varieties. More precisely, let $(X,D=\sum d_iD_i)$ be a three-dimensional log variety such that $K_X+D$ is numerically trivial and $(X,D)$ has only…

代数几何 · 数学 2010-05-06 Yuri G. Prokhorov

Let $\mathcal C$ be a Grothendieck category and $U$ be a monad on $\mathcal C$ that is exact and preserves colimits. In this article, we prove that every hereditary torsion theory on the Eilenberg-Moore category of modules over a monad $U$…

范畴论 · 数学 2024-08-29 Divya Ahuja , Surjeet Kour

In this paper, we will study the continuity of the Fourier transform of measures with respect to the vague topology. We show that the Fourier transform is vaguely discontinuous on R, but becomes continuous when restricting to a class of…

泛函分析 · 数学 2020-02-06 Timo Spindeler , Nicolae Strungaru

A result due to Cho, Miyaoka, Shepherd-Barron [CMSB] and Kebekus [Ke] provides a numerical characterization of projective spaces. More recently, Dedieu and H\"oring [DH] gave a characterization of smooth quadrics based on similar arguments.…

代数几何 · 数学 2024-11-27 Bruno Dewer

Let T_n denote the set of log canonical thresholds of pairs (X,Y), with X a nonsingular variety of dimension n, and Y a nonempty closed subscheme of X. Using non-standard methods, we show that every limit of a decreasing sequence in T_n…

代数几何 · 数学 2009-02-02 Tommaso de Fernex , Mircea Mustata

It was conjectured by Tian that the global log canonical threshold (known as the $\alpha$-invariant) is equal to the level $k$ log canonical threshold (known as the $\alpha_k$-invariant) for all sufficiently large $k$. A weaker folklore…

代数几何 · 数学 2024-12-04 Chenzi Jin

We show that on a Kahler manifold whether the J-flow converges or not is independent of the chosen background metric in its Kahler class. On toric manifolds we give a numerical characterization of when the J-flow converges, verifying a…

微分几何 · 数学 2014-12-17 Tristan C. Collins , Gábor Székelyhidi

Could the location of the maximum point for a positive solution of a semilinear Poisson equation on a convex domain be independent of the form of the nonlinearity? Cima and Derrick found certain evidence for this surprising conjecture. We…

偏微分方程分析 · 数学 2015-07-07 Brian A. Benson , Richard S. Laugesen , Michael Minion , Bartlomiej A. Siudeja

It is well known that if a random vector satisfies a log-Sobolev inequality, all of its marginals have subgaussian tails. In the spirit of the KLS conjecture, we investigate whether this implication can be reversed under a log-concavity…

泛函分析 · 数学 2026-02-17 Pierre Bizeul

We introduce a new measurable quantity, $R_{\Delta \phi}$, for studies of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations in hadron-hadron collisions. In pQCD, $R_{\Delta \phi}$ is computed as a ratio of…

高能物理 - 唯象学 · 物理学 2021-12-01 M. Wobisch , K. Chakravarthula , R. Dhullipudi , L. Sawyer , M. Tamsett

Twist tori are examples of exotic monotone lagrangian tori, presented in [1]. This tree of examples grew up over the first one --- the torus $\Theta \in \R^4$, constructured in [2] and [3]. On the other hand, in [4] and [5] we proposed a…

辛几何 · 数学 2015-05-18 Nikolay A. Tyurin

In previous work, we have introduced delta-forms on the Berkovich analytification of an algebraic variety in order to study smooth or formal metrics via their associated Chern delta-forms. In this paper, we investigate positivity properties…

代数几何 · 数学 2016-09-14 Walter Gubler , Klaus Kuennemann

We prove the existence of periodic orbits for steady $C^\omega$ Euler flows on all Riemannian solid tori. By using the correspondence theorem from part I of this series, we reduce the problem to the Weinstein Conjecture for solid tori. We…

辛几何 · 数学 2007-05-23 John Etnyre , Robert Ghrist

Caffarelli's contraction theorem bounds the derivative of the optimal transport map between a log-convex measure and a strongly log-concave measure. We show that an analogous phenomenon holds on the level of the trace: The trace of the…

偏微分方程分析 · 数学 2025-11-26 Guido De Philippis , Yair Shenfeld

This paper shows that Mustata-Nakamura's conjecture holds for pairs consisting of a smooth surface and a multiideal with a real exponent over the base field of positive characteristic. As corollaries, we obtain the ascending chain condition…

代数几何 · 数学 2020-03-11 Shihoko Ishii

Different extended objects can fall in different ways, depending on their internal structures. Some motions are nevertheless impossible, regardless of internal structure. This paper derives universal constraints on extended-body motion,…

广义相对论与量子宇宙学 · 物理学 2023-09-14 Abraham I. Harte , David Dwyer

The curvature of the noncommutative torus $T^2_\theta$ ($\theta$ irrational) endowed with a noncommutative conformal metric has been the focus of attention of several recent works. Continuing the approach taken in the paper [A. Connes and…

量子代数 · 数学 2017-03-10 Matthias Lesch , Henri Moscovici

In this note, we show that the strong Viterbo conjecture holds true on any convex toric domain, and that the Viterbo's volume-capacity conjecture holds for the product of a $1$-unconditional convex body $A\subset\mathbb{R}^{n}$ and its…

辛几何 · 数学 2020-08-21 Kun Shi , Guangcun Lu

We prove a multidimensional extension of Selberg's central limit theorem for $\log\zeta$, in which non-trivial correlations appear. In particular, this answers a question by Coram and Diaconis about the mesoscopic fluctuations of the zeros…

数论 · 数学 2009-02-12 Paul Bourgade

In this short note, we consider the conjecture that the log canonical divisor (resp. the anti-log canonical divisor) $K_X + \Delta$ (resp. $-(K_X + \Delta)$) on a pair $(X, \Delta)$ consisting of a complex projective manifold $X$ and a…

代数几何 · 数学 2007-05-23 Shigetaka Fukuda