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In this note, we solve the complex Monge-Amp\`ere equation for measures with a pluripolar part in compact K\"ahler manifolds. This result generalizes the classical results obtained by Cegrell in bounded hyperconvex domains. We also discuss…

Complex Variables · Mathematics 2025-03-28 Songchen Liu

The aim of this paper is to study self-similar solutions to the symplectic cuvature flow on 6-dimensional nilmanifolds. For this purpose, we focus our attention in the family of symplectic Two- and Three-step nilpotent Lie algebras…

Differential Geometry · Mathematics 2015-03-13 Edison Alberto Fernández-Culma

We introduce a wide subclass ${\cal F}(X,\omega)$ of quasi-plurisubharmonic functions in a compact K\"ahler manifold, on which the complex Monge-Amp\`ere operator is well-defined and the convergence theorem is valid. We also prove that…

Complex Variables · Mathematics 2007-05-23 Yang Xing

We show that any almost complex structure, positively tamed with $\omega$ on nearly K\"{a}hler 6-manifold $(M,g,J,\omega)$ is not integrable

Differential Geometry · Mathematics 2013-05-07 Natalia Daurtseva

We show a general existence theorem to the complex Monge-Amp\`ere type equation on compact K\"ahler manifolds.

Complex Variables · Mathematics 2017-08-02 Slimane Benelkourchi

A locally conformally K\"ahler (LCK) manifold is a complex manifold $M$ which has a K\"ahler structure on its cover, such that the deck transform group acts on it by homotheties. Assume that the K\"ahler form is exact on the minimal…

Differential Geometry · Mathematics 2024-05-24 Liviu Ornea , Misha Verbitsky

We study non-totally geodesic Lagrangian submanifolds of the nearly K\"ahler $\mathbb{S}^3 \times \mathbb{S}^3$ for which the projection on the first component is nowhere of maximal rank. We show that this property can be expressed in terms…

Differential Geometry · Mathematics 2016-11-15 Burcu Bektas , Marilena Moruz , Joeri Van der Veken , Luc Vrancken

We show that existence and uniqueness of solutions to transported Monge-Ampere problem on complex compact toric manifold follows easily from the real theory of optimal transportation.

Analysis of PDEs · Mathematics 2021-02-18 Szymon Myga

Let $(M,I)$ be an almost complex 6-manifold. The obstruction to integrability of almost complex structure (so-called Nijenhuis tensor) maps a 3-dimensional bundle to a 3-dimensional one. We say that Nijenhuis tensor is non-degenerate if it…

Differential Geometry · Mathematics 2008-04-13 Misha Verbitsky

If $f$ is an automorphism of a compact simply connected K\"ahler manifold with trivial canonical bundle that fixes a K\"ahler class, then the order of $f$ is finite. We apply this well known result to construct compact non-K\"ahler…

Algebraic Geometry · Mathematics 2012-11-30 Gunnar Þór Magnússon

We prove that the Riemannian geometry of almost K\"ahler manifolds can be expressed in terms of the Poisson algebra of smooth functions on the manifold. Subsequently, K\"ahler-Poisson algebras are introduced, and it is shown that a…

Differential Geometry · Mathematics 2012-11-15 Joakim Arnlind , Gerhard Huisken

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

In this article we classify totally geodesic submanifolds of homogeneous nearly K\"ahler 6-manifolds, and of the G2-cones over these 6-manifolds. To this end, we develop new techniques for the study of totally geodesic submanifolds of…

Differential Geometry · Mathematics 2025-06-10 Juan Manuel Lorenzo-Naveiro , Alberto Rodríguez-Vázquez

We show that the dynamics of automorphisms on all projective complex manifolds X (of dimension 3, or of any dimension but assuming the Good Minimal Model Program or Mori's Program) are canonically built up from the dynamics on just three…

Algebraic Geometry · Mathematics 2018-09-24 De-Qi Zhang

We classify compact K\"ahler threefolds $X$ with a free group of automorphisms acting freely on $X$.

Dynamical Systems · Mathematics 2020-02-04 Serge Cantat , Olga Paris-Romaskevich , Junyi Xie

We prove the long time existence and uniqueness of solutions to the parabolic Monge-Amp\`ere equation on compact almost Hermitian manifolds. We also show that the normalization of solution converges to a smooth function in $C^{\infty}$…

Analysis of PDEs · Mathematics 2016-07-12 Jianchun Chu

Manifolds admitting positive sectional curvature are conjectured to have rigid homotopical structure and, in particular, comparatively small Euler charateristics. In this article, we obtain upper bounds for the Euler characteristic of a…

Differential Geometry · Mathematics 2014-07-22 Manuel Amann , Lee Kennard

A nearly K\"ahler manifold is an almost Hermitian manifold with the weakened K\"ahler condition, that is, instead of being zero, the covariant derivative of the almost complex structure is skew-symmetric. We give the explicit…

Differential Geometry · Mathematics 2019-11-15 Miloš Djorić , Mirjana Djorić , Marilena Moruz

We show that conformal manifolds in $d\geq 3$ conformal field theories with at least 4 supercharges are K\"ahler-Hodge, thus extending to 3d ${\cal N}=2$ and 4d ${\cal N}=1$ similar results previously derived for 4d ${\cal N}=2$ and ${\cal…

High Energy Physics - Theory · Physics 2022-09-28 Vasilis Niarchos , Kyriakos Papadodimas

We prove that every projective special K\"ahler manifold with \emph{regular boundary behaviour} is complete and defines a family of complete quaternionic K\"ahler manifolds depending on a parameter $c\ge 0$. We also show that, irrespective…

Differential Geometry · Mathematics 2016-12-30 Vicente Cortés , Malte Dyckmanns , Stefan Suhr
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