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Related papers: Entire curves generating all shapes of Nevanlinna …

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First, inspired by a question of Sibony, we show that in every compact complex manifold $Y$ with certain Oka property, there exists some entire curve $f: \mathbb{C}\rightarrow Y$ generating all Nevanlinna/Ahlfors currents on $Y$, by…

Complex Variables · Mathematics 2023-10-06 Song-Yan Xie

Let \(X\) be a compact complex manifold possessing the \emph{Runge approximation property on discs}, meaning that every holomorphic map from a closed disc into \(X\) is approximable by a global holomorphic map from \(\mathbb{C}\). We…

Complex Variables · Mathematics 2025-11-18 Yunling Chen , John Erik Fornæss , Song-Yan Xie

We answer a basic question in Nevanlinna theory that Ahlfors currents associated to the same entire curve may be nonunique. Indeed, we will construct one exotic entire curve $f: \mathbb{C}\rightarrow X$ which produces infinitely many…

Complex Variables · Mathematics 2021-02-01 Dinh Tuan Huynh , Song-Yan Xie

In this note, we establish the following Second Main Theorem type estimate for every entire non-algebraically degenerate holomorphic curve $f\colon\mathbb{C}\rightarrow\mathbb{P}^n(\mathbb{C})$, in present of a {\sl generic} hypersuface…

Algebraic Geometry · Mathematics 2017-11-28 Dinh Tuan Huynh , Duc-Viet Vu , Song-Yan Xie

We establish a Second Main Theorem for entire holomorphic curves \( f: \mathbb{C} \to \mathbb{P}^2 \) intersecting a generic configuration of three conics \(\mathcal{C}= \mathcal{C}_1+ \mathcal{C}_2+ \mathcal{C}_3 \) in the complex…

Complex Variables · Mathematics 2026-01-21 Lei Hou , Dinh Tuan Huynh , Joël Merker , Song-Yan Xie

We show the existence of metrically dense entire curves in rationally connected complex projective manifolds confirming for this case a conjecture according to which such entire curves on projective manifolds exist if and only if these are…

Algebraic Geometry · Mathematics 2020-01-09 Frederic Campana , Joerg Winkelmann

For $q\leq 3$ smooth plane algebraic curves $\mathcal{C}_i$ having simple normal crossings, if the invariant logarithmic $2$-jet differential bundle associated to $(\mathbb{P}^2(\mathbb{C}), \sum_{i=1}^q \mathcal{C}_i)$ has a nonzero…

Algebraic Geometry · Mathematics 2018-04-11 Dinh Tuan Huynh , Duc-Viet Vu , Song-Yan Xie

In this paper, we prove some fundamental theorems for holomorphic curves on angular domain intersecting a hypersurface, finite set of fixed hyperplanes in general position and finite set of fixed hypersurfaces in general position on complex…

Complex Variables · Mathematics 2017-02-13 Nguyen Van Thin

We prove that entire conformal curves $\mathbb{R}^n \rightarrow \mathbb{R}^m$ fall into two classes: either the curve is affine or the average energy in a ball is strictly increasing for large radii and diverges to infinity. This rigidity…

Differential Geometry · Mathematics 2025-09-05 Toni Ikonen

This paper determines the full derived deformation theory of certain smooth rational curves C in Calabi-Yau 3-folds, by determining all higher A_\infty-products in its controlling DG-algebra. This geometric setup includes very general cases…

Algebraic Geometry · Mathematics 2024-09-13 Gavin Brown , Michael Wemyss

Let F be a polarized irreducible holomorphic symplectic fourfold, deformation equivalent to the Hilbert scheme parametrizing length-two zero-dimensional subschemes of a K3 surface. The homology group H^2(F,Z) is equipped with an integral…

Algebraic Geometry · Mathematics 2010-03-05 Brendan Hassett , Yuri Tschinkel

Let $\{D_i\}_{i=1}^{n+1}$ be $n+1$ hypersurfaces in $\mathbb{P}^n(\mathbb{C})$ with total degrees $\sum_{i=1}^{n+1} \deg D_i\geqslant n+2$, in general position and satisfying a generic geometric condition: every $n$ hypersurfaces intersect…

Complex Variables · Mathematics 2023-11-30 Zhangchi Chen , Dinh Tuan Huynh , Ruiran Sun , Song-Yan Xie

In this paper, we prove a lemma on logarithmic derivative for holomorphic curves from annuli into K\"{a}hler compact manifold and. As its application, a second main theorem for holomophic curves from annuli into semi abelian varieties…

Complex Variables · Mathematics 2022-06-01 Si Duc Quang

We determine all the Kummer-surface-type Calabi-Yau (CY) 3-folds, i.e., those $\hat{T/G}$ which are resolutions of 3-torus-orbifolds $T/G$ with only isolated singularities. There are only two such CY spaces: one with $G= \ZZ_3$ and $T$…

Algebraic Geometry · Mathematics 2007-05-23 Shi-shyr Roan

We prove that an algebraic curve charged by a current coming from an entire curve is rational or elliptic. This answers a question by M. Paun.

Complex Variables · Mathematics 2007-05-23 Julien Duval

Let $\overline G$ be the wonderful compactification of a simple affine algebraic group $G$ of adjoint type defined over $\mathbb C.$ Let ${\overline T}\subset \overline G$ be the closure of a maximal torus $T\subset G.$ We prove that the…

Algebraic Geometry · Mathematics 2017-02-28 Indranil Biswas , Subramaniam Senthamarai Kannan , Donihakalu Shankar Nagaraj

We prove that in closed almost complex manifolds of any dimension, generic perturbations of the almost complex structure suffice to achieve transversality for all unbranched multiple covers of simple pseudoholomorphic curves with…

Symplectic Geometry · Mathematics 2016-11-04 Chris Gerig , Chris Wendl

Taubes established fundamental properties of $J-$holomorphic subvarieties in dimension 4 in \cite{T1}. In this paper, we further investigate properties of reducible $J-$holomorphic subvarieties. We offer an upper bound of the total genus of…

Symplectic Geometry · Mathematics 2015-07-10 Tian-Jun Li , Weiyi Zhang

Given a group $G$ with bounded torsion that acts properly on a systolic complex, we show that every solvable subgroup of $G$ is finitely generated and virtually abelian of rank at most $2$. In particular this gives a new proof of the above…

Group Theory · Mathematics 2017-07-26 Tomasz Prytuła

We start by constructing a Hilbert manifold T of orientation preserving diffeomorphisms of the circle (modulo the group of bi-holomorphic self-mappings of the disc). This space, which could be thought of as a completion of the universal…

Mathematical Physics · Physics 2007-05-23 M. E. Schonbek , A. N. Todorov , J. P. Zubelli
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