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The cohomology algebra of the canonical bundle of a compact K\"ahler manifold is naturally viewed as a module over an exterior algebra. We use the Bernstein-Gel'fand-Gel'fand correspondence, together with Generic Vanishing theory, in order…

Algebraic Geometry · Mathematics 2010-07-19 Robert Lazarsfeld , Mihnea Popa

We extend the results of generic vanishing theory to polarizable real Hodge modules on compact complex tori, and from there to arbitrary compact K\"ahler manifolds. As applications, we obtain a bimeromorphic characterization of compact…

Algebraic Geometry · Mathematics 2016-10-11 Giuseppe Pareschi , Mihnea Popa , Christian Schnell

This paper is concerned with the existence of constant scalar curvature Kaehler metrics on blow ups at finitely many points of compact manifolds which already carry constant scalar curvature Kaehler metrics. We also consider the…

Differential Geometry · Mathematics 2007-05-23 Claudio Arezzo , Frank Pacard

We prove that for any smooth polarized complex $n$-dimensional manifold $(X, L_X)$ which admits an extremal K\"ahler metric in $c_1(L_X)$, and for any integer $k$ large enough (in terms of a bound depending on $(X, L_X)$), the…

Differential Geometry · Mathematics 2026-04-01 Vestislav Apostolov , Abdellah Lahdili , Chung-Ming Pan

We present a theory of reduction for Courant algebroids as well as Dirac structures, generalized complex, and generalized K\"ahler structures which interpolates between holomorphic reduction of complex manifolds and symplectic reduction.…

Differential Geometry · Mathematics 2007-06-13 Henrique Bursztyn , Gil R. Cavalcanti , Marco Gualtieri

We construct a canonical singular hermitian metric with semipositive curvature current on the canonical line bundle of a compact K\"{a}hler manifold with pseudoeffective canonical bundle.

Algebraic Geometry · Mathematics 2007-07-03 Hajime Tsuji

The recent link discovered between generalized Legendre transforms and non-dually flat statistical manifolds suggests a fundamental reason behind the ubiquity of R\'{e}nyi's divergence and entropy in a wide range of physical phenomena.…

Statistical Mechanics · Physics 2023-04-19 Pablo A. Morales , Jan Korbel , Fernando E. Rosas

This article is an expository introduction to our paper Convexity of the K-energy and Uniqueness of Extremal metrics. We present the main ideas behind the proof that Mabuchi's K-energy functional is convex along weak geodesics in the space…

Differential Geometry · Mathematics 2025-11-06 Robert J. Berman , Bo Berndtsson

We investigate compact complex manifolds endowed with SKT or balanced metrics. In each case we define a new functional whose critical points are proved to be precisely the K\"ahler metrics, if any, on the manifold. As general manifolds of…

Differential Geometry · Mathematics 2023-05-16 Sławomir Dinew , Dan Popovici

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 point out how some recent developments in the theory of constant scalar curvature K\"ahler metrics can be used to clarify the existence issue for such metrics in the special case of geometrically ruled complex surfaces.

Differential Geometry · Mathematics 2007-05-23 Vestislav Apostolov , Christina W. Tønnesen-Friedman

This paper has three objectives. First to recall the link between the classical Legendre-Fenschel transformation and a useful isomorphism between 1-jets of functions on a vector bundle and on its dual. As a particular consequence we obtain…

Differential Geometry · Mathematics 2007-05-23 Jean-Paul Dufour

We generalize the notions of the Futaki invariant and extremal vector field of a compact K\"ahler manifold to the general almost-Kahler case and show the periodicity of the extremal vector field when the symplectic form represents an…

Differential Geometry · Mathematics 2010-04-22 Mehdi Lejmi

In this work, we study Monge-Ampere equations over closed K\"ahler manifolds with degenerated cohomology classes. Classic results and arguments in pluripotential theory are generalized a little bit to be applied to our situation.

Differential Geometry · Mathematics 2007-05-23 Zhou Zhang

Let (M,I) be a compact Kaehler manifold admitting a hypercomplex structure. We show that (M, I) admits a natural HKT-metric. This is used to construct a holomorphic symplectic form on (M,I).

Algebraic Geometry · Mathematics 2007-05-23 Misha Verbitsky

We discuss continuous duality transformations and the properties of classical theories with invariant interactions between electromagnetic fields and matter. The case of scalar fields is treated in some detail. Special discrete elements of…

High Energy Physics - Theory · Physics 2007-05-23 Mary K. Gaillard , Bruno Zumino

Finite energy pluripotential theory accommodates the variational theory of equations of complex Monge-Amp\`ere type arising in K\"ahler geometry. Recently it has been discovered that many of the potential spaces involved have a rich metric…

Differential Geometry · Mathematics 2023-09-19 Tamás Darvas

In this paper we study a generalization of K\"ahler differentials, which correspond to the secondary Hochschild homology associated to a triple $(A,B,\varepsilon)$. We establish computations in low dimension, while also showing how this…

Commutative Algebra · Mathematics 2022-06-24 Jacob Laubacher

We give a generalization of the Penrose transform on Hermitian manifolds with metrics locally conformally equivalent to Bochner-K\"ahler metrics. We also give an explicit formula for the inverse transform. This paper is a generalization of…

dg-ga · Mathematics 2008-02-03 Yoshinari Inoue

We study the Dirichlet problem for complex Monge-Ampere equations in Hermitian manifolds with general (non-pseudoconvex) boundary. Our main result extends the classical theorem of Caffarelli, Kohn, Nirenberg and Spruck in the flat case. We…

Differential Geometry · Mathematics 2011-02-19 Bo Guan , Qun Li