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相关论文: Quantized volume comparison for Fano manifolds

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We compute global log canonical thresholds, or equivalently alpha invariants, of birationally rigid orbifold Fano threefolds embedded in weighted projective spaces as codimension two or three. As an important application, we prove that most…

代数几何 · 数学 2016-04-04 In-Kyun Kim , Takuzo Okada , Joonyeong Won

We study the volume growth of hyperkaehler manifolds of type $A_{\infty}$ constructed by Anderson-Kronheimer-LeBrun and Goto. These are noncompact complete 4-dimensional hyperkaehler manifolds of infinite topological type. These manifolds…

微分几何 · 数学 2010-06-30 Kota Hattori

This correspondence studies an estimator of the conditional support of a distribution underlying a set of i.i.d. observations. The relation with mutual information is shown via an extension of Fano's theorem in combination with a…

信息论 · 计算机科学 2007-07-13 Kristiaan Pelckmans , Jos De Brabanter , Johan A. K. Suykens , Bart De Moor

We survey the theory of K\"ahler-Einstein metrics, with particular focus on the circle of ideas surrounding the Yau-Tian-Donaldson conjecture for Fano manifolds.

微分几何 · 数学 2017-10-18 Gábor Székelyhidi

The boundary at infinity of a quasifuchsian hyperbolic manifold is equiped with a holomorphic quadratic differential. Its horizontal measured foliation $f$ can be interpreted as the natural analog of the measured bending lamination on the…

几何拓扑 · 数学 2017-08-08 Jean-Marc Schlenker

We find an explicit upper bound for the anticanonical volume of Fano 4-folds with canonical singularities.

代数几何 · 数学 2022-09-20 Caucher Birkar

Quantum Fano inequality (QFI) in quantum information theory provides an upper bound to the entropy exchange by a function of the entanglement fidelity. We give various Fano-like upper bounds to the entropy exchange and QFI is a special case…

量子物理 · 物理学 2013-02-22 Naresh Sharma

The purpose of this note is to provide some volume estimates for Einstein warped products similar to a classical result due to Calabi and Yau for complete Riemannian manifolds with nonnegative Ricci curvature. To do so, we make use of the…

微分几何 · 数学 2014-08-08 A. Barros , R. Batista , E. Ribeiro

A short proof of the convergence of the Kahler-Ricci flow on Fano manifolds admitting a Kahler-Einstein metric or a Kahler-Ricci soliton is given, using a variety of recent techniques

微分几何 · 数学 2020-01-20 Bin Guo , Duong H. Phong , Jacob Sturm

In this article we prove an upper bound for a Hilbert polynomial on quaternionic Kaehler manifolds of positive scalar curvature. As corollaries we obtain bounds on the quaternionic volume and the degree of the associated twistor space.…

微分几何 · 数学 2007-05-23 Uwe Semmelmann , Gregor Weingart

In this paper, we prove that if a metric measure space satisfies the volume doubling condition and the Caffarelli-Kohn-Nirenberg inequality with same exponent n(n>1), then it has exactly n-dimensional volume growth. As application, we…

微分几何 · 数学 2017-11-15 Willian Isao Tokura , Levi Adriano , Changyu Xia

We study finite-time collapsing limits of the continuity method. When the continuity method starting from a rational initial K\"ahler metric on a projective manifold encounters a finite-time volume collapsing, this projective manifold…

微分几何 · 数学 2018-10-11 Yashan Zhang , Zhenlei Zhang

Let $\{\alpha\}$ and $\{\beta\}$ be nef cohomology classes of bidegree $(1,\,1)$ on a compact $n$-dimensional K\"ahler manifold $X$ such that the difference of intersection numbers $\{\alpha\}^n - n\,\{\alpha\}^{n-1}.\,\{\beta\}$ is…

复变函数 · 数学 2017-09-14 Dan Popovici

We show that the K\"ahler-Einstein metrics on the four families of examples of symmetric toric Fano manifolds presented by Batyrev and Selivanova cannot be realized as metrics induced by immersions into projective spaces equipped with…

微分几何 · 数学 2025-12-04 Antonio J. Di Scala , Martín Sombra

We define a renormalized volume for a region in an asymptotically hyperbolic Einstein manifold that is bounded by a Graham-Witten minimal surface and the conformal infinity. We prove a Gauss-Bonnet theorem for the renormalized volume, and…

微分几何 · 数学 2023-08-01 Matthew J. Gursky , Stephen E. McKeown , Aaron J. Tyrrell

Let $P$ be a simplicial smooth Fano polytope. We provide a concrete unimodular triangulation of $P$. We prove that the delta-vector of a simplicial smooth Fano polytope is unimodal and we give upper and lower bound for the volume of…

组合数学 · 数学 2026-05-05 Gábor Hegedüs

We show that volumes and related limits in terms of the Kodaira-Iitaka dimension exist for line bundles and graded linear series on compact reduced complex analytic spaces.

代数几何 · 数学 2013-05-06 Steven Dale Cutkosky

Let us consider a projective manifold and $\Omega$ a volume form. We define the gradient flow associated to the problem of $\Omega$-balanced metrics in the quantum formalism, the \Omega$-balacing flow. At the limit of the quantization, we…

微分几何 · 数学 2015-11-17 H. -D. Cao , Julien Keller

In this short note, we will prove a volume stability theorem which says that if an n-dimensional toric manifold $M$ admits a $\mathbb{T}^n$ invariant K\"ahler metric $\omega$ with Ricci curvature no less than 1 and its volume is close to…

微分几何 · 数学 2012-10-23 Wang Feng

The smallest $r$ so that a metric $r$-ball covers a metric space $M$ is called the radius of $M$. The volume of a metric $r$-ball in the space form of constant curvature $k$ is an upper bound for the volume of any Riemannian manifold with…

微分几何 · 数学 2015-05-22 Curtis Pro , Michael Sill , Frederick Wilhelm