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In this paper, we prove a Liouville theorem for holomorphic functions on a class of complete Gauduchon manifolds. This generalizes a result of Yau for complete K\"ahler manifolds to the complete non-K\"ahler case.

微分几何 · 数学 2018-05-30 Yuang Li , Chuanjing Zhang , Xi Zhang

The Wu--Yau theorem asserts that a compact K\"ahler manifold with negative holomorphic sectional curvature admits a cohomologous metric with negative Ricci curvature. We introduce a conjectural positive analog of the Wu--Yau theorem and…

微分几何 · 数学 2023-06-21 Kyle Broder

In this paper we prove the existence and uniqueness of the form-type Calabi-Yau equation on K\"ahler manifolds of nonnegative orthogonal bisectional curvature.

微分几何 · 数学 2011-03-16 Jixiang Fu , Zhizhang Wang , Damin Wu

In this note we give a characterization of taut Riemannian foliations using the transverse divergence. This result turns out to be a convenient tool in the case of some standard examples. Furthermore, we show that a classical tautness…

微分几何 · 数学 2016-02-10 Vladimir Slesar

We introduce and investigate a novel notion of transversely affine foliation, comparing and contrasting it to the previous ones in the literature. We then use it to give an extension of the classic Hadamard's theorem from Riemannian…

We study the geometry of Calabi-Yau conifold transitions. This deformation process is known to possibly connect a K\"ahler threefold to a non-K\"ahler threefold. We use balanced and Hermitian-Yang-Mills metrics to geometrize the conifold…

微分几何 · 数学 2025-12-25 Benjamin Friedman , Sébastien Picard , Caleb Suan

We study Lie foliations on compact manifolds, in case the Lie group is compact. Our main results improve Tischler classical result on the existence of fibration and, as an application, we study the case the manifold has an amenable…

几何拓扑 · 数学 2010-07-16 Marcelo Tavares

K\"ahler-Einstein metrics for polarized families of Calabi-Yau manifolds define a natural hermitian metric on the relative canonical bundle. The fact that the curvature form is equal to the pull-back of the Weil-Petersson form up to a…

复变函数 · 数学 2019-01-23 Matthias Braun , Young-Jun Choi , Georg Schumacher

We discuss two closely related Calabi-Yau theorems for degenerations of compact K\"ahler manifolds. The first is a Calabi-Yau theorem for big test configurations, that generalizes a result in [WN24]. It follows from recent joint work with…

微分几何 · 数学 2025-10-06 David Witt Nyström

We generalize the Tian-Todorov Theorem in the case of Calabi-Yau varieties equipped with a line bundle.

代数几何 · 数学 2019-01-31 Shizhang Li , Xuanyu Pan

Under suitable conditions, we show that the Euler characteristic of a foliated Riemannian manifold can be computed only from curvature invariants which are transverse to the leaves. Our proof uses the hypoelliptic sub-Laplacian on forms…

微分几何 · 数学 2021-06-30 Fabrice Baudoin , Erlend Grong , Gianmarco Vega-Molino

Haefliger cohomology characterizes taut foliated manifolds by Haefliger's theorem. We show that Haefliger cohomology characterizes strongly tense foliated manifolds, namely, foliated manifolds which admit a Riemannian metric such that the…

微分几何 · 数学 2018-12-21 Hiraku Nozawa

We extend the classical theory of sphere theorems to the transverse geometry of Riemannian foliations. In this setting, we establish transverse analogues of the Grove-Shiohama diameter sphere theorem and of the Berger-Klingenberg…

微分几何 · 数学 2026-03-17 Francisco C. Caramello , Francisco A. Neubauer

For a compact complex manifold, we introduce holomorphic foliations associated with certain abelian subgroups of the automorphism group. Such foliations are generalizations of holomorphic principal torus bundles. If there exists a…

复变函数 · 数学 2018-01-22 Hiroaki Ishida , Hisashi Kasuya

In this paper, by combining techniques from Ricci flow and algebraic geometry, we prove the following generalization of the classical uniformization theorem of Riemann surfaces. Given a complete noncompact complex two dimensional K\"ahler…

微分几何 · 数学 2007-05-23 Bing-Long Chen , Siu-Hung Tang , Xi-Ping Zhu

Starting with a concise review of quaternionic geometry and quaternionic K{\"a}hler manifolds, we define a transversely quaternionic K{\"a}hler foliation. Then we formulate and prove the foliated versions of the now classical results of…

微分几何 · 数学 2025-12-16 Rouzbeh Mohseni , Robert A. Wolak

We define a new version of the exterior derivative on the basic forms of a Riemannian foliation to obtain a new form of basic cohomology that satisfies Poincar\'e duality in the transversally orientable case. We use this twisted basic…

微分几何 · 数学 2021-01-28 Georges Habib , Ken Richardson

Let $Y$ be a compact Gorenstein analytic space with only isolated singularities and trivial dualizing sheaf. A recent paper of Imagi studies the deformation theory of $Y$ in case the singularities of $Y$ are weighted homogeneous and…

代数几何 · 数学 2026-02-16 Robert Friedman

We study the uniformization conjecture of Yau by using the Gromov-Haudorff convergence. As a consequence, we confirm Yau's finite generation conjecture. More precisely, on a complete noncompact K\"ahler manifold with nonnegative bisectional…

微分几何 · 数学 2015-05-05 Gang Liu

We study properties of the mean curvature one-form and its holomorphic and antiholomorphic cousins on a transverse K\"ahler foliation. If the mean curvature of the foliation is automorphic, then there are some restrictions on basic…

微分几何 · 数学 2021-01-28 Seoung Dal Jung , Ken Richardson
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