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We classify meromorphic affine connections on compact complex surfaces with algebraic dimension one, extending the work of Inoue,Kobayashi and Ochiai (1981) in the holomorphic case. The motivation is to investigate possible extension of the…

Algebraic Geometry · Mathematics 2024-03-14 Alexis Garcia

SE Han's paper [11] discusses several variants of digital covering maps. We show several equivalences among these variants and discuss shortcomings in Han's paper.

Geometric Topology · Mathematics 2023-08-15 Laurence Boxer

We use two ingredients to prove the hyperbolicity of generic hypersurfaces of sufficiently high degree and of their complements in the complex projective space. One is the pullbacks of appropriate low pole order meromorphic jet…

Complex Variables · Mathematics 2015-02-23 Yum-Tong Siu

In this paper we investigate the growth of meromorphic solutions of homogeneous and non-homogeneous linear difference equations with entire or meromorphic coefficients. We further extend and improve few results on the order of meromorphic…

Complex Variables · Mathematics 2022-06-23 Subhadip Khan , Chinmay Ghosh , Sanjib Kumar Datta

We describe a part of the recent developments in the theory of separately holomorphic mappings between complex analytic spaces. Our description focuses on works using the technique of holomorphic discs.

Complex Variables · Mathematics 2009-01-15 Viet-Anh Nguyen

This work surveys the topological and statistical properties of real quadratic maps and investigates the complex quadratic maps under holomorphic and non-holomorphic singular perturbations.

Dynamical Systems · Mathematics 2026-01-19 Haitao Shang

The purpose of this article is to investigate the holomorphic vector fields tangent to a real hypersurface in $\mathbb C^2$ vanishing at an infinite type point.

Complex Variables · Mathematics 2014-08-19 Ninh Van Thu

We find the first examples of real hypersurfaces with two nonconstant principal curvatures in complex projective and hyperbolic planes, and we classify them. It turns out that each such hypersurface is foliated by equidistant Lagrangian…

Differential Geometry · Mathematics 2013-10-02 J. Carlos Diaz-Ramos , Miguel Dominguez-Vazquez , Cristina Vidal-Castiñeira

We complete the classification of ruled real hypersurfaces with shape operator of constant norm in nonflat complex space forms by showing the existence of a unique inhomogeneous example in the complex hyperbolic space.

Differential Geometry · Mathematics 2020-11-18 Miguel Dominguez-Vazquez , Olga Perez-Barral

A result of Beauville states that with a few positive characterstic exceptions, the smooth hyperplane sections of hypersurfaces of degree $d>2$ in projective space are not all isomorphic. We address the question of whether these sections…

Algebraic Geometry · Mathematics 2007-05-23 Michael A. van Opstall , Razvan Veliche

Using the theory of exterior differential systems, we study the existence of germ of pseudo-holomorphic disk in a real analytic hypersurface locally defined in a complex manifold equipped with J a real analytic almost complex structure. The…

Complex Variables · Mathematics 2025-01-09 Pierre Bonneau , Emmanuel Mazzilli

Since their introduction by Thurston, measured geodesic laminations on hyperbolic surfaces occur in many contexts. In [Mor], we have introduced a notion of flat laminations on surfaces endowed with a half-translation structure (that is a…

Metric Geometry · Mathematics 2014-12-08 Thomas Morzadec

In this paper we show that a (non necessarily integrable) holomorphic plane field on a compact complex manfold $M$ having an infinite number of invariant hypersurfaces must admit a meromorphic first integral $F:M\longrightarrow…

Dynamical Systems · Mathematics 2015-03-27 L. Câmara , B. Scárdua

R. Guralnick [Linear Algebra Appl. 99, 85-96 (1988)] proved that two holomorphic matrices on a noncompact connected Riemann surface, which are locally holomorphically similar, are globally holomorphically similar. In the preprints…

Complex Variables · Mathematics 2018-02-06 Jürgen Leiterer

We investigate the geometry of holomorphic curves and complex surfaces from the perspective of singularity theory. We show that, with a suitable choice of a complex bilinear symmetric form, the families of functions and mappings that…

Differential Geometry · Mathematics 2025-12-23 Amanda Dias Falqueto , Farid Tari

We present some general properties of biharmonic and biconservative submanifolds and then survey recent results on such hypersurfaces in space forms. We also propose an alternative version for a well-known result of Nomizu and Smyth for…

Differential Geometry · Mathematics 2021-02-02 Dorel Fetcu , Cezar Oniciuc

We give an overview of results on irregular complex surfaces of general type, discussing in particular the distribution of the numerical invariants self-intersection of a canonical divisor and holomorphic Euler characteristic for the…

Algebraic Geometry · Mathematics 2009-09-30 Margarida Mendes Lopes , Rita Pardini

Answering all questions---concerning proper holomorphic mappings between generalized Hartogs triangles---posed by Jarnicki and Plfug (First steps in several complex variables: Reinhardt domains, 2008) we characterize the existence of proper…

Complex Variables · Mathematics 2017-09-18 Pawel Zapalowski

We study the geometry of homogeneous hypersurfaces and their focal sets in complex hyperbolic spaces. In particular, we provide a characterization of the focal set in terms of its second fundamental form and determine the principal…

Differential Geometry · Mathematics 2007-05-23 Jurgen Berndt , Jose Carlos Diaz-Ramos

This paper review one construction of Frobenius manifolds (and slightly weaker structures). It splits it into several steps and discusses the freedom and the constraints in these steps. The steps pass through holomorphic bundles with…

Differential Geometry · Mathematics 2019-12-10 Liana David , Claus Hertling