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In this short note, using Siu-Yau's method [14], we give a new proof that any n-dimensional compact Kahler manifold with positive orthogonal bisectional curvature must be biholomorphic to $\mathbb{P}^n$.

Differential Geometry · Mathematics 2017-10-30 Huitao Feng , Kefeng Liu , Xueyuan Wan

In this paper we study dually flat spaces arising from Delzant polytopes equipped with a symplectic potential together with their corresponding toric K\"ahler manifolds as their torifications.We introduce a dually flat structure and the…

Symplectic Geometry · Mathematics 2023-12-27 Hajime Fujita

In this paper we propose a noncommutative generalization of the relationship between compact K\"ahler manifolds and complex projective algebraic varieties. Beginning with a prequantized K\"ahler structure, we use a holomorphic Poisson…

Differential Geometry · Mathematics 2022-03-09 Francis Bischoff , Marco Gualtieri

We propose a classification of non-k\"ahlerian surfaces from a dynamical point of view and show how the known non-k\"ahlerian surfaces fit into it.

Complex Variables · Mathematics 2020-06-18 Ionuţ Chiose , Matei Toma

We show how affine and projective special K\"ahler manifolds emerge from the structure of quantization. We quantize them and construct natural (wavefunction) representations for the corresponding coherent states. These in turn are shown to…

High Energy Physics - Theory · Physics 2013-05-22 Michael M. Kay

Let K be an algebraically closed field of characteristic p. We exhibit a counterexample against a theorem asserted in one of our earlier papers, which claims to characterize the integral closure of K((t)) within the field of…

Commutative Algebra · Mathematics 2016-11-28 Kiran S. Kedlaya

In this paper, we study global properties of continuous plurisubharmonic functions on complete noncompact K\"ahler manifolds with nonnegative bisectional curvature and their applications to the structure of such manifolds. We prove that…

Differential Geometry · Mathematics 2007-05-23 Lei Ni , Luen-Fai Tam

Compact K\"ahler solvmanifolds are classified up to biholomorphism. A proof of a conjecture Benson and Gordon, that completely solvable compact K\"ahler solvmanifolds are tori is deduced from this. The main ingredient in the proof is a…

Differential Geometry · Mathematics 2007-05-23 Donu Arapura

In this paper, we review or introduce several differential structures on manifolds in the general setting of real and complex differential geometry, and apply this study to Teichm\"uller theory. We focus on bi-Lagrangian i.e. para-K\"ahler…

Differential Geometry · Mathematics 2020-08-25 Brice Loustau , Andrew Sanders

There is a sequence of positive numbers $\delta_{2n}$, such that for any connected $2n$-dimensional Riemannian manifold $M$, there are two mutually exclusive possibilities: $1)$ There is a complex structure on $M$ making it into a K\"ahler…

Differential Geometry · Mathematics 2018-02-20 Scott O. Wilson , Mahmoud Zeinalian

A classical theorem of Frankel for compact K\"ahler manifolds states that a K\"ahler S^1-action is Hamiltonian if and only if it has fixed points. We prove a metatheorem which says that when Hodge theory holds on non-compact manifolds, then…

Symplectic Geometry · Mathematics 2015-06-18 Rafe Mazzeo , Álvaro Pelayo , Tudor Ratiu

The paper presents a classification theorem for the class of flat connections with triangular (0,1)-components on a topologically trivial complex vector bundle over a compact Kahler manifold. As a consequence we obtain several results on…

Differential Geometry · Mathematics 2007-05-23 Alexander Brudnyi

This note proves that, as K-theory elements, the symbol classes of the de Rham operator and the signature operator on a closed manifold of even dimension are congruent mod 2. An equivariant generalization is given pertaining to the…

Geometric Topology · Mathematics 2008-04-08 James F. Davis , Pisheng Ding

We relate the positivity of the curvature term in the Weitzenbock formula for the Laplacian on p-forms on a complete manifold to the existence of bounded and $L^2$ harmonic forms. In the case where the manifold is the universal cover of a…

dg-ga · Mathematics 2016-05-09 K. D. Elworthy , Xue-Mei Li , Steven Rosenberg

In this work we define a deformation theory for the Coupled K\"ahler-Yang-Mills equations in arXiv:1102.0991, generalizing work of Sz\'ekelyhidi on constant scalar curvature K\"ahler metrics. We use the theory to find new solutions of the…

Differential Geometry · Mathematics 2017-05-17 Mario Garcia-Fernandez , Carl Tipler

Let $(X,\omega_0)$ be a compact K\"ahler manifold and $\mathcal X\to B$ its Kuranishi family, where the base $B$ may be singular with $\dim_{\C} B \ge 1$. Using explicit sections of Hodge bundles obtained from algebraic and geometric…

Algebraic Geometry · Mathematics 2026-02-17 Kefeng Liu , Yang Shen

In this paper we present a new approach to Morse theory based on the de Rham-Federer theory of currents. The full classical theory is derived in a transparent way. The methods carry over uniformly to the equivariant and the holomorphic…

Differential Geometry · Mathematics 2012-08-27 F. Reese Harvey , H. Blaine Lawson,

We will classify physically admissible manifold structures by the use of Waldhausen categories. These categories give rise to algebraic K-Theory. Moreover, we will show that a universal K-spectrum is necessary for a physical manifold being…

General Topology · Mathematics 2023-06-27 Patrick Linker , Cenap Ozel , Alexander Pigazzini , Monika Sati , Richard Pincak , Eric Choi

We prove a compactness theorem for automorphisms of free groups. Namely, we show that the set of automorphisms keeping bounded the length of the uniform current is compact (up to conjugation.) This implies that the spectrum of the length of…

Group Theory · Mathematics 2008-09-23 Stefano Francaviglia

We show that a compact manifold admitting a Killing foliation with positive transverse curvature fibers over finite quotients of spheres or weighted complex projective spaces, provided that the singular foliation defined by the closures of…

Differential Geometry · Mathematics 2022-10-05 Francisco C. Caramello , Dirk Toeben
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