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We study a generalized Abreu Equation in $n$-dimensional polytopes and prove some differential inequalities for homogeneous toric bundles.

Differential Geometry · Mathematics 2016-03-11 An-Min Li , Li Sheng , Guosong Zhao

We give a combinatorial criterion for the tangent bundle on a smooth toric variety to be stable with respect to a given polarisation in terms of the corresponding lattice polytope. Furthermore, we show that for a smooth toric surface and a…

Algebraic Geometry · Mathematics 2019-10-22 Milena Hering , Benjamin Nill , Hendrik Süß

We study the Dirichlet problem of the Abreu equation. The solutions provide the Kahler metrics of constant scalar curvature on the complex torus.

Differential Geometry · Mathematics 2010-08-17 Bohui Chen , An-Min Li , Li Sheng

We construct complete Riemannian metrics to show that the total space of tangent bundles of orientable closed surfaces (except torus) admits complete uniformly PSC-metrics. It gives a partial positive answer to one of Gromov's question.

Differential Geometry · Mathematics 2019-11-12 Jialong Deng

In this paper, we study the Abreu equation on toric surfaces. In particular, we prove the existence of the positive extremal metric when relative $K$-stability is assumed.

Differential Geometry · Mathematics 2015-09-24 Bohui Chen , An-Min Li , Li Sheng

We provide an explicit resolution of the Abreu equation on convex labeled quadrilaterals. This confirms a conjecture of Donaldson in this particular case and implies a complete classification of the explicit toric K\"ahler-Einstein and…

Differential Geometry · Mathematics 2011-12-15 Eveline Legendre

Let $M=P(E)$ be the complex manifold underlying the total space of the projectivization of a holomorphic vector bundle $E \to \Sigma$ over a compact complex curve $\Sigma$ of genus $\ge 2$. Building on ideas of Fujiki, we prove that $M$…

Differential Geometry · Mathematics 2013-05-06 Vestislav Apostolov , David M. J. Calderbank , Paul Gauduchon , Christina W. Tønnesen-Friedman

We investigate the logarithmic bundles associated to arrangements of hypersurfaces with a fixed degree in a smooth projective variety. We then specialize to the case when the variety is a quadric hypersurface and a multiprojective space to…

Algebraic Geometry · Mathematics 2013-12-10 Edoardo Ballico , Sukmoon Huh , Francesco Malaspina

We describe the closure of the strata of abelian differentials with prescribed type of zeros and poles, in the projectivized Hodge bundle over the Deligne-Mumford moduli space of stable curves with marked points. We provide an explicit…

Algebraic Geometry · Mathematics 2018-11-14 Matt Bainbridge , Dawei Chen , Quentin Gendron , Samuel Grushevsky , Martin Moeller

This paper is concerned with a relative uniform Yau--Tian--Donaldson correspondence, in terms of test configurations, for the projectivization \( \mathbb{P}(E) \) of a holomorphic vector bundle \( E \) over a smooth curve. For any K\"ahler…

Differential Geometry · Mathematics 2026-02-16 Simon Jubert , Chenxi Yin

Let X be a smooth irreducible complex projective curve of genus g > 1. In this paper, we give necessary and sufficient conditions for an unstable bundle of HN-lenght 2 to have a particular algebra of endomorphisms. Then, fixing the…

Algebraic Geometry · Mathematics 2022-04-26 L. Brambila-Paz , Rocio Rios Sierra

We study the existence of asymptotically $Z$-stable (a.Z stable) bundles over polycyclic surfaces. Our choice of polynomial central charge is related to the existence of solutions of the deformed Hermitian--Yang--Mills equations, with…

Algebraic Geometry · Mathematics 2026-04-23 Luiz Lara , Henrique N. Sá Earp

The aim of this paper is to discuss a combinatorial characterisation of stability for toric vector bundles (or equivariant reflexive sheaves) in the terms of their parliaments of polytopes, a generalization of moment polytopes for toric…

Algebraic Geometry · Mathematics 2023-09-13 Lucie Devey

Using Bridgeland stability conditions we give sufficient criteria for a stable vector bundle on a surface to remain stable when restricted to a curve. We give a stronger criterion when the vector bundle is a general vector bundle on the…

Algebraic Geometry · Mathematics 2020-06-16 John Kopper

In this short note, we show that, assuming a conjecture of Arcara and Miles, a line bundle on a smooth complex projective surface admits a deformed Hermitian-Yang-Mills metric if and only if it is stable in the ``large scaling limit" with…

Algebraic Geometry · Mathematics 2026-04-27 Yu-Wei Fan

This paper completes a programme to determine which toric surfaces admit Kahler metrics of constant scalar curvature/

Differential Geometry · Mathematics 2008-05-02 S. K. Donaldson

We use a recently proposed formulation of stable holomorphic vector bundles $V$ on elliptically fibered Calabi--Yau n-fold $Z_n$ in terms of toric geometry to describe stability conditions on $V$. Using the toric map $f: W_{n+1} \to…

High Energy Physics - Theory · Physics 2009-10-31 P. Berglund , P. Mayr

We compute the homotopy type of the moduli space of flat, unitary connections over aspherical surfaces, after stabilizing with respect to the rank of the underlying bundle. Over the orientable surface M^g, we show that this space has the…

Algebraic Topology · Mathematics 2018-05-09 Daniel A. Ramras

The moduli space of slope-stable vector bundles on a normal projective variety over an algebraically closed field of characteristic $p\geq 0$ is stratified with respect to the decomposition type. On a smooth projective curve of genus at…

Algebraic Geometry · Mathematics 2023-08-15 Dario Weissmann

In [7], a notion of constant scalar curvature metrics on piecewise flat manifolds is defined. Such metrics are candidates for canonical metrics on discrete manifolds. In this paper, we define a class of vertex transitive metrics on certain…

Differential Geometry · Mathematics 2010-09-17 Daniel Champion , Andrew Marchese , Jacob Miller , Andrea Young
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