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This note studies the equivalencies among convergences of Ricci-flat K\"{a}hler-Einstein metrics on Calabi-Yau manifolds, cohomology classes and potential functions.

Differential Geometry · Mathematics 2017-11-03 Yuguang Zhang

Compact Vaisman manifolds with vanishing first Chern class split into three categories, depending on the sign of the Bott-Chern class. We show that Vaisman manifolds with non-positive Bott-Chern class admit canonical metrics, are…

Differential Geometry · Mathematics 2023-04-06 Nicolina Istrati

A notion of asymptotically conical K\"ahler orbifold is introduced, and, following previous existence results in the setting of asymptotically conical manifolds, it is shown that a certain complex Monge-Amp\'ere equation admits a rapidly…

Complex Variables · Mathematics 2022-02-18 Mitchell Faulk

We propose a conceptual framework that leads to an abstract characterization for the exact solvability of Calabi-Yau varieties in terms of abelian varieties with complex multiplication. The abelian manifolds are derived from the cohomology…

High Energy Physics - Theory · Physics 2009-11-10 M. Lynker , R. Schimmrigk , S. Stewart

We prove that any compact complex homogeneous space with vanishing first Chern class after an appropriate deformation of the complex structure admits a homogeneous Calabi-Yau with torsion structure, provided that it also has an invariant…

Differential Geometry · Mathematics 2010-10-22 Gueo Grantcharov

Because of the existence of rigid Calabi--Yau manifolds, mirror symmetry cannot be understood as an operation on the space of manifolds with vanishing first Chern class. In this article I continue to investigate a particular type of…

High Energy Physics - Theory · Physics 2010-11-01 Rolf Schimmrigk

In this note, we propose a new approach to solving the Calabi problem on manifolds with edge-cone singularities of prescribed angles along complex hypersurfaces. It is shown how the classical approach of Aubin-Yau in derving {\it a priori}…

Differential Geometry · Mathematics 2018-10-19 S. Ali Aleyasin

Let $M$ be a complete Ricci-flat Kahler manifold with one end and assume that this end converges at an exponential rate to $[0,\infty) \times X$ for some compact connected Ricci-flat manifold $X$. We begin by proving general structure…

Differential Geometry · Mathematics 2014-11-27 Mark Haskins , Hans-Joachim Hein , Johannes Nordström

We study type one generalized complex and generalized Calabi--Yau manifolds. We introduce a cohomology class that obstructs the existence of a globally defined, closed 2-form which agrees with the symplectic form on the leaves of the…

Differential Geometry · Mathematics 2023-05-26 Michael Bailey , Gil R. Cavalcanti , Marco Gualtieri

Given a weighted line arrangement in the projective plane, with weights satisfying natural constraint conditions, we show the existence of a Ricci-flat K\"ahler metric with cone singularities along the lines asymptotic to a polyhedral…

Differential Geometry · Mathematics 2021-10-26 Martin de Borbon , Cristiano Spotti

The moduli space of multiply-connected Calabi-Yau threefolds is shown to contain codimension-one loci on which the corresponding variety develops a certain type of hyperquotient singularity. These have local descriptions as discrete…

High Energy Physics - Theory · Physics 2011-06-28 Rhys Davies

We prove a priori estimates for a class of transverse fully nonlinear equations on Sasakian manifolds and give some geometric applications such as the transversion Calabi-Yau theorem for transverse balanced and (strongly) Gauduchon metrics.…

Differential Geometry · Mathematics 2019-10-04 Ke Feng , Tao Zheng

We establish a C^0 a priori bound on the solutions of the quaternionic Calabi-Yau equation (of Monge-Ampere type) on compact HKT manifolds with a locally flat hypercomplex structure. As an intermediate step, we prove a quaternionic version…

Complex Variables · Mathematics 2016-07-28 Semyon Alesker , Egor Shelukhin

We introduce some new algebraic structures arising naturally in the geometry of Calabi-Yau manifolds and mirror symmetry. We give a universal construction of Calabi-Yau algebras in terms of a noncommutative symplectic DG algebra resolution.…

Algebraic Geometry · Mathematics 2007-05-23 Victor Ginzburg

We prove two results on geometric consequences of the representation of restricted holonomy group of a Hermitian connection. The first result concerns when such a Hermitian manifold is K\"ahler in terms of the torsion and the irreducibility…

Differential Geometry · Mathematics 2024-10-10 Lei Ni

We find a new obstruction to the existence of solutions of the Hull-Strominger system, which goes beyond the balanced property of the Calabi-Yau manifold $(X,\Omega)$ and the Mumford-Takemoto slope stability of the bundle over it. The basic…

Differential Geometry · Mathematics 2023-03-10 Mario Garcia-Fernandez , Raul Gonzalez Molina

We study the class of compact complex manifolds whose first Chern class vanishes in the Bott-Chern cohomology. This class includes all manifolds with torsion canonical bundle, but it is strictly larger. After making some elementary remarks,…

Differential Geometry · Mathematics 2015-11-26 Valentino Tosatti

Given a (smoothable) projective nodal K\"ahler Calabi-Yau threefold, we show, via a gluing construction, that all its - possibly non-K\"ahler - small resolutions admit Chern-Ricci flat balanced metrics, which among other things solve the…

Differential Geometry · Mathematics 2024-08-30 Federico Giusti , Cristiano Spotti

We prove that the Calabi-Yau equation can be solved on the Kodaira-Thurston manifold for all given $T^2$-invariant volume forms. This provides support for Donaldson's conjecture that Yau's theorem has an extension to symplectic…

Differential Geometry · Mathematics 2011-04-21 Valentino Tosatti , Ben Weinkove

We formulate an extension of the Calabi conjecture to the setting of generalized K\"ahler geometry. We show a transgression formula for the Bismut Ricci curvature in this setting, which requires a new local Goto/Kodaira-Spencer deformation…

Differential Geometry · Mathematics 2024-11-05 Vestislav Apostolov , Xin Fu , Jeffrey Streets , Yury Ustinovskiy