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Related papers: On K\"ahler metrisability of two-dimensional compl…

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We solve the metrisability problem for generic three-dimensional projective structures.

Differential Geometry · Mathematics 2018-01-18 Michael Eastwood

We give an elementary proof of the following projectivity criterion of Huybrechts: a compact K\"ahler surface is projective if and only if the dual K\"ahler cone contains an inner integral point.

Algebraic Geometry · Mathematics 2007-05-23 Keiji Oguiso , Thomas Peternell

Let $\overline{M}$ be a smooth manifold with boundary $\partial M$ and interior $M$. Consider an affine connection $\nabla$ on $M$ for which the boundary is at infinity. Then $\nabla$ is projectively compact of order $\alpha$ if the…

Differential Geometry · Mathematics 2016-11-08 Andreas Cap , A. Rod Gover

We classify and investigate locally conformally K\"ahler structures on four-dimensional solvable Lie algebras up to linear equivalence. As an application we can produce many examples in higher dimension, here including lcK structures on…

Differential Geometry · Mathematics 2019-12-23 Daniele Angella , Marcos Origlia

For complete complex connections on almost complex manifolds we introduce a natural definition of compactification. This is based on almost c--projective geometry, which is the almost complex analogue of projective differential geometry.…

Differential Geometry · Mathematics 2019-10-31 Andreas Cap , A. Rod Gover

We study the geometry of the tangent bundle equipped with a two-parameter family of Riemannian metrics. After deriving the expression of the Levi-Civita connection, we compute the Riemann curvature tensor and the sectional, Ricci and scalar…

Differential Geometry · Mathematics 2009-02-06 M. Benyounes , E. Loubeau , C. M. Wood

We give a geometric characterization of certain hypersurfaces of cohomogeneity one in the complex projective and hyperbolic planes. We also obtain some partial classifications of austere hypersurfaces and of Levi-flat hypersurfaces with…

Differential Geometry · Mathematics 2016-09-08 Jose Carlos Diaz-Ramos , Miguel Dominguez-Vazquez , Cristina Vidal-Castiñeira

We study the Kaehler metric given by the logarithm of a cubic form on its complexified index cone. Under mirror symmetry, this metric should asymptotically correspond to the Weil-Petersson metric. Using the theory of special Kaehler…

Algebraic Geometry · Mathematics 2010-07-19 Thomas Trenner

We establish a regularity result for the metric on any 4-dimensional extremal K\"ahler manifold, and a weak compactness theorem on the space of such metrics. Specifically, the sectional curvature at a point is bounded when the quantity…

Differential Geometry · Mathematics 2011-05-11 Brian Weber

We construct projectors in the ring of correspondences of a complex uniruled 3-fold $X$ which lift the Kuenneth components of the diagonal in singular cohomology and have other properties which were conjectured by J. Murre. Such Murre…

alg-geom · Mathematics 2014-10-24 Pedro Luis del Angel , Stefan Müller-Stach

We show any Riemannian curvature model can be geometrically realized by a manifold with constant scalar curvature. We also show that any pseudo-Hermitian curvature model, para-Hermitian curvature model, hyper-pseudo-Hermitian curvature…

Differential Geometry · Mathematics 2008-11-12 M. Brozos-Vazquez , P. Gilkey , H. Kang , S. Nikcevic , G. Weingart

This article examines the coincidence of the projective and conformal Weyl tensors associated to a given connection D. The connection may be a general Weyl connection associated to a conformal class of metrics [g]. The main result for n>3…

Differential Geometry · Mathematics 2013-01-25 Christian Lübbe

Following an earlier paper on the differential-geometric structure of the moduli space of special Lagrangian submanifolds in a Calabi-Yau manifold, we follow an analogous approach for compact complex Lagrangian submanifolds of a…

Differential Geometry · Mathematics 2007-05-23 N J Hitchin

Given a holomorphic Lagrangian fibration of a compact hyperkahler manifold, we use the differential geometry of the special Kahler metric that exists on the base away from the discriminant locus, and show that the pullback of the tangent…

Algebraic Geometry · Mathematics 2024-06-14 Yang Li , Valentino Tosatti

A long-standing conjecture in non-K\"ahler geometry states that if the Chern (or Levi-Civita) holomorphic sectional curvature of a compact Hermitian manifold is a constant $c$, then the metric must be K\"ahler when $c\neq 0$ and must be…

Differential Geometry · Mathematics 2026-03-17 Yulu Li , Fangyang Zheng

We obtain Ricci flat K\"ahler metrics on complex symmetric spaces of rank two by using an explicit asymptotic model whose geometry at infinity is interpreted in the wonderful compactification of the symmetric space. We recover the metrics…

Differential Geometry · Mathematics 2020-11-17 Olivier Biquard , Thibaut Delcroix

In this paper, we study locally strongly convex affine hypersurfaces with vanishing Weyl curvature tensor and semi-parallel cubic form relative to the Levi-Civita connection of affine metric. As the main result, we classify such…

Differential Geometry · Mathematics 2024-02-21 Huiyang Xu , Cece Li

This is the first in a series of papers in which we develop a twistor-based method of constructing hyperkaehler metrics from holomorphic functions and elliptic curves. As an application, we revisit the Atiyah-Hitchin manifold and derive in…

Differential Geometry · Mathematics 2008-01-05 Radu A. Ionas

The scalars in vector multiplets of N=2 supersymmetric theories in 4 dimensions exhibit `special Kaehler geometry', related to duality symmetries, due to their coupling to the vectors. In the literature there is some confusion on the…

High Energy Physics - Theory · Physics 2009-10-30 B. Craps , F. Roose , W. Troost , A. Van Proeyen

The $B$-connection on almost complex manifolds with Norden metric is an analogue of the first canonical connection of Lihnerovich in Hermitian geometry. In the present paper it is considered a $B$-connection in the class of the…

Differential Geometry · Mathematics 2009-07-14 Dimitar Mekerov