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In this manuscript we study natural symmetries of Kaehler manifolds: constant holomorphic sectional curvature Kaheler manifolds, semisymmetric Kaehler manifolds and holomorphically pseudosymmetric Kaehler manifolds. We get characterization…

微分几何 · 数学 2024-02-08 Alma L. Albujer , Jorge Alcázar , Magdalena Caballero

The properties of Kaehler submanifolds with recurrent the second fundamental form in spaces of constant holomorphic sectional curvature are being studied in this article.

微分几何 · 数学 2010-01-29 Irina I. Bodrenko

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…

微分几何 · 数学 2010-09-17 Daniel Champion , Andrew Marchese , Jacob Miller , Andrea Young

We consider projective rational strong Calabi dream surfaces: projective smooth rational surfaces which admit a constant scalar curvature K\"ahler metric for every K\"ahler class. We show that there are only two such rational surfaces,…

代数几何 · 数学 2020-10-02 Jesus Martinez-Garcia

We estimate $\delta$-invariants of some singular del Pezzo surfaces with quotient singularities, which we studied ten years ago. As a result, we show that each of these surfaces admits an orbifold K\"ahler--Einstein metric.

代数几何 · 数学 2020-01-22 Ivan Cheltsov , Jihun Park , Constantin Shramov

Using an ansatz due to LeBrun we construct complete scalar-flat K\"ahler metrics with a prescribed varying conical singularity along a divisor.

微分几何 · 数学 2024-01-01 Gonçalo Oliveira , Rosa Sena-Dias

We apply Nadel's method of multiplier ideal sheaves to show that every complex del Pezzo surface of degree at most six whose automorphism group acts without fixed points has a K\"ahler-Einstein metric. In particular, all del Pezzo surfaces…

代数几何 · 数学 2007-10-31 Gordon Heier

We survey some recent results and constructions of almost-K\"ahler manifolds whose curvature tensors have certain algebraic symmetries. This is an updated and corrected version of the (to be) published manuscript.

微分几何 · 数学 2007-05-23 Vestislav Apostolov , Tedi Draghici

We prove new local inequality for divisors on surfaces and utilize it to compute $\alpha$-invariants of singular del Pezzo surfaces, which implies that del Pezzo surfaces of degree one whose singular points are of type $\mathbb{A}_{1}$,…

代数几何 · 数学 2012-10-04 Ivan Cheltsov , Dimitra Kosta

It is known that Hirzebruch surfaces of non zero degree do not admit any constant scalar curvature K\"ahler metric \cite{ACGT,G,M17}. In this note, we describe how to construct Hermitian metrics of positive constant Chern scalar curvature…

微分几何 · 数学 2019-10-22 Caner Koca , Mehdi Lejmi

We study surfaces with constant anisotropic mean curvature which are invariant under a helicoidal motion. For functionals with axially symmetric Wulff shapes, we generalize the recently developed twizzler representation of Perdomo to the…

微分几何 · 数学 2015-05-20 Chad Kuhns , Bennett Palmer

We explain how the current knowledge on the set of complete noncompact constant mean curvature surfaces can be exploited to produce new examples of compact constant mean curvature surfaces of genus greater than or equal to 3.

微分几何 · 数学 2007-05-23 M. Jleli , F. Pacard

We give sufficient conditions for the existence of Kaehler-Einstein and constant scalar curvature Kaehler (cscK) metrics on finite ramified Galois coverings of a cscK manifold in terms of cohomological conditions on the Kaehler classes and…

微分几何 · 数学 2021-10-05 Claudio Arezzo , Alberto Della Vedova , Yalong Shi

We consider a compact K\"ahler manifold admitting a constant scalar curvature K\"ahler metric and with no nontrivial holomorphic vector fields. After blowing up the manifold at finitely many points, we prove the existence of constant scalar…

微分几何 · 数学 2026-05-28 Yueqing Feng

We give a condition under which the findings of the paper cited above work well and determine the surfaces that were not considered before. In this paper, we show that a parallel mean curvature surface of a general type in a complex…

微分几何 · 数学 2021-11-03 K. Kenmotsu

In this paper we characterize logarithmic surfaces which admit K\"ahler-Einstein metrics with negative scalar curvature and small edge singularities along a normal crossing divisor.

微分几何 · 数学 2014-10-10 Luca Fabrizio Di Cerbo

We discuss our recent results on the existence and classification problem of complex and Kaehler structures on compact solvmanifolds. In particular, we determine in this paper all the complex surfaces which are diffeomorphic to compact…

复变函数 · 数学 2008-04-30 Keizo Hasegawa

In this paper, we study the existence of twisted constant scalar curvature K\"{a}hler (cscK) metrics and non-existence of coupled cscK metrics on minimal ruled surfaces over a Riemann surface of genus $2$. Moreover, we give a bound for the…

微分几何 · 数学 2025-11-04 Ramesh Mete

The aim of this paper is to classify compact Kahler manifolds with quasi-constant holomorphic sectional curvature.

微分几何 · 数学 2016-02-26 Wlodzimierz Jelonek

An introduction is provided to some current research trends in stability in geometric invariant theory and the problem of Kaehler metrics of constant scalar curvature. Besides classical notions such as Chow-Mumford stability, the emphasis…

微分几何 · 数学 2008-02-28 D. H. Phong , Jacob Sturm