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Given a compact Riemannian manifold with boundary, we prove that the space of embedded, which may be improper, free boundary minimal hypersurfaces with uniform area and Morse index upper bound is compact in the sense of smoothly graphical…

微分几何 · 数学 2021-01-27 Qiang Guang , Zhichao Wang , Xin Zhou

We continue our study of heterotic compactifications on non-Kahler complex manifolds with torsion. We give further evidence of the consistency of the six-dimensional manifold presented earlier and discuss the anomaly cancellation and…

高能物理 - 理论 · 物理学 2010-04-06 Katrin Becker , Melanie Becker , Keshav Dasgupta , Paul S. Green , Eric Sharpe

Let $ 1 \rightarrow N \rightarrow G \rightarrow Q \rightarrow 1$ be an exact sequence of finitely presented groups where Q is infinite and not virtually cyclic, and is the fundamental group of some closed 3-manifold. If G is Kaehler, we…

几何拓扑 · 数学 2012-12-14 Indranil Biswas , Mahan Mj , Harish Seshadri

In this article we study compact K\"ahler manifolds $X$ admitting non-singular holomorphic vector fields with the aim of extending to this setting the classical birational classification of projective varieties with tangent vector fields.…

代数几何 · 数学 2010-07-20 Jaume Amoros , Monica Manjarin , Marcel Nicolau

It is shown that if $X$ is an Inoue surface of type $S_M$ then the irreducible components of the Douady space of $X^n$ are compact, for all $n>0$. This gives an example of an essentially saturated compact complex manifold (in the sense of…

复变函数 · 数学 2014-02-26 Rahim Moosa , Ruxandra Moraru , Matei Toma

We study holomorphic geometric structures on non-K\"ahler compact complex manifolds with trivial canonical line bundle. For Vaisman Calabi-Yau manifolds we prove that all holomorphic geometric structures of affine type on them are locally…

微分几何 · 数学 2026-05-22 Indranil Biswas , Sorin Dumitrescu

In this paper, we study the compactness of a boundary value problem for hyperkaehler 4-manifolds. We show that under certain topological conditions and the positive mean curvature condition on the boundary, a sequence of hyperkaehler…

微分几何 · 数学 2022-02-16 Hongyi Liu

Let $X$ be a compact K{\"a}hler manifold of dimension three. We prove that there exists a projective manifold $Y$ such that $\pi\_1(X)\simeq \pi\_1(Y)$. We also prove the bimeromorphic existence of algebraic approximations for compact…

代数几何 · 数学 2020-01-08 Benoît Claudon , Andreas Höring , Hsueh-Yung Lin

We show that the Reshetikhin-Turaev-Walker invariant of 3-manifolds can be normalized to obtain an invariant of 4-dimensional thickenings of 2-complexes. Moreover when the underlying semisimple tortile category comes from the…

几何拓扑 · 数学 2007-05-23 Ivelina Bobtcheva , Frank Quinn

In this work, we investigate compact K\"ahler manifolds with non-negative or quasi-positive mixed curvature coming from a linear combination of the Ricci and holomorphic sectional curvature, which covers various notions of curvature…

微分几何 · 数学 2024-08-27 Jianchun Chu , Man-Chun Lee , Jintian Zhu

We survey and explain some recent work at the intersection of model theory and bimeromorphic geometry (classification of compact complex manifolds). Included here are the essential saturation of the many sorted structure $\mathcal{C}$ of…

逻辑 · 数学 2007-05-23 Rahim Moosa , Anand Pillay

We prove two results relating 3-manifold groups to fundamental groups occurring in complex geometry. Let N be a compact, connected, orientable 3-manifold. If N has non-empty, toroidal boundary, and \pi_1(N) is a Kaehler group, then N is the…

几何拓扑 · 数学 2014-02-25 Stefan Friedl , Alexander Suciu

On a class of compact Hermitian manifolds including compact K\"{a}hler manifolds, we prove that the the relative non-pluripolar product is always well-defined. We also prove the monotonicity of the relative non-pluripolar product in terms…

微分几何 · 数学 2025-06-02 Zhenghao Li , Shuang Su

Let $X$ be a hyperkaehler manifold. Trianalytic subvarieties of $X$ are subvarieties which are complex analytic with respect to all complex structures induced by the hyperkaehler structure. Given a 2-dimensional complex torus $T$, the…

代数几何 · 数学 2007-05-23 D. Kaledin , M. Verbitsky

A theorem of Kuranishi tells us that the moduli space of complex structures on any smooth compact manifold is always locally a finite-dimensional space. Globally, however, this is simply not true; we display examples in which the moduli…

复变函数 · 数学 2017-02-15 Claude LeBrun

We prove the following theorem for Holomorphic Foliations in compact complex kaehler manifolds: if there is a compact leaf with finite holonomy, then every leaf is compact with finite holonomy. As corollary we reobtain stability theorems…

几何拓扑 · 数学 2010-04-20 Jorge Vitorio Pereira

A vector bundle E on a projective variety X is called finite if it satisfies a nontrivial polynomial equation with integral coefficients. A theorem of Nori implies that E is finite if and only if the pullback of E to some finite etale…

代数几何 · 数学 2023-06-22 Indranil Biswas , Vamsi Pritham Pingali

Let M be a (bounded or not) domain of C^n which is complete with respect to a K\"ahler metric, or more generally, a complete K\"ahler manifold with trivial canonical bundle. Let f be a linearly nondegenerate meromorphic map from M to the…

复变函数 · 数学 2017-11-13 Do Duc Thai , Duc-Viet Vu

Let $X$ be a compact K\"ahler manifold of complex dimension $k\ge 2$ and $f:X\to X$ a surjective holomorphic endomorphism of simple action on cohomology. We prove that the sequence of normalized pull-backs of a non-pluripolar current under…

复变函数 · 数学 2023-09-22 Taeyong Ahn , Duc-Viet Vu

This note proves orbifold versions of Kobayashi's theorem. The main result asserts that a compact K\"ahler orbifold with non-negative Ricci curvature, along with certain conditions regarding singularities, is simply connected.

微分几何 · 数学 2026-04-09 Yuguang Zhang