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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,982 papers · 148 categories

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65130195260 · May 202619922001200920172026
48 results for directed holomorphic curves

Paper approximates continuous functions on Jordan arcs using conformal minimal immersions.

problem Approximating continuous functions on Jordan arcs using minimal immersions.
method Conformal minimal immersions and directed holomorphic curves.
result Continuous functions on Jordan arcs can be approximated by conformal minimal immersions.

Study shows Lelong numbers vanish for certain currents in weakly hyperbolic foliations.

problem Analyzing Lelong numbers for currents in weakly hyperbolic foliations.
method Local and global analysis of directed positive harmonic currents and currents directed by foliations.
result Lelong numbers of currents at the singularity vanish.

We prove that the length of the boundary of a JJ-holomorphic curve with Lagrangian boundary conditions is dominated by a constant times its area. The constant depends on the symplectic form, the almost complex structure, the Lagrangian boundary conditions and the genus. A similar result holds for the length of the rea…

2012-10-15abs ↗pdf ↗

We consider the local analytic behavior for a family of holomorphic differentials on a family of degenerating annuli. Three results and discussion are presented. The first is the normal families Lemma 1. The second is an isomorphism of sheaves, formula (3), giving a direct description of families of regular kk-differe…

2011-08-16abs ↗pdf ↗

The paper explores the Thomas-Yau conjecture using holomorphic curves and Floer theory.

problem Proving the Thomas-Yau conjecture in the context of Lagrangian branes.
method Using holomorphic curves and Floer theory to construct and analyze bordism currents and moduli spaces.
result Established Floer theoretic obstructions and variational framework for finding special Lagrangians.

Let P(E)P(E) be the projectivization of a holomorphic vector bundle EE over a compact complex curve CC. We characterize the existence of an extremal Kähler metric on the ruled manifold P(E)P(E) in terms of relative K-polystability and the fact that EE decomposes as a direct sum of stable bundles.

2017-01-30abs ↗pdf ↗

This article is concerned with the question of whether an energy bound implies a genus bound for pseudo-holomorphic curves in almost complex manifolds. After reviewing what is known in dimensions other than 6, we establish a new result in this direction in dimension 6; in particular, for symplectic Calabi-Yau 6-manifol…

2018-09-13abs ↗pdf ↗

Let MM be an open Riemann surface and n3n\ge 3 be an integer. We prove that on any closed discrete subset of MM one can prescribe the values of a conformal minimal immersion MRnM\to\mathbb{R}^n. Our result also ensures jet-interpolation of given finite order, and hence, in particular, one may in addition prescribe the…

2017-01-16abs ↗pdf ↗

An analytic approach and description are presented for the moduli cotangent sheaf for suitable stable curve families including noded fibers. For sections of the square of the relative dualizing sheaf, the residue map at a node gives rise to an exact sequence. The residue kernel defines the vanishing residue subsheaf. F…

2012-04-17abs ↗pdf ↗

We propose a new approach to the value distribution theory of entire holomorphic curves. We define a ``packing density'' of an entire holomorphic curve, and show that it has various non-trivial properties. We prove a ``gap theorem'' for holomorphic maps from elliptic curves to the complex projective space, and study th…

2006-05-13abs ↗pdf ↗

Let π:MBπ:M\to B be a proper holomorphic submersion between complex manifolds and E{\cal E} a holomorphic bundle on MM. We study and describe explicitly the torsion subsheaf Tors(R1π(E))\mathrm{Tors}(R^1π_*({\cal E})) of the first direct image R1π(E)R^1π_*(\mathcal{E}) under the assumption R0π(E)=0R^0π_*(\mathcal{E})=0. We give two applic…

2013-09-02abs ↗pdf ↗

Study on holomorphic curves in 6-sphere with boundary conditions.

problem Characterizing holomorphic curves in nearly-Kähler 6-manifolds with boundary conditions.
method Complex-geometric methods, including second variation formula for area.
result Obtained rigidity results for reflection-invariant holomorphic curves and topological lower bounds for Morse index.

Constructs the moduli space of super J-holomorphic curves.

problem Defines and constructs the moduli space of super J-holomorphic curves.
method Uses component fields of a super differential equation and a transversality argument.
result Constructs the moduli space of super J-holomorphic curves as a smooth subsupermanifold.

The paper studies holomorphic curves in a pseudo-Riemannian space and their moduli space.

problem Understanding the moduli space of holomorphic curves in a pseudo-Riemannian space.
method Using Frenet framing and G2G_2'-Higgs bundles, the paper describes the moduli space of equivariant alternating holomorphic curves.
result Equivariant alternating holomorphic curves are infinitesimally rigid.

Study transverse JJ-holomorphic curves linking nearly Kähler CP3\mathbb{CP}^3 to minimal surfaces.

problem Understanding JJ-holomorphic curves in nearly Kähler CP3\mathbb{CP}^3.
method Introducing transverse JJ-holomorphic curves and establishing Bonnet-type theorems.
result Classification of flat tori and construction of moment-type maps.

The paper proves compactness for holomorphic curves with boundary on nearby Lagrangians.

problem Compactness of holomorphic curves with boundary on nearby Lagrangians.
method Generalizes earlier work on compactness, proving a limit configuration of holomorphic curves joined by gradient flow lines.
result Exponential estimate analyzing the interface between holomorphic parts and gradient flow lines.

Holomorphic curves in moduli spaces are quasi-isometrically immersed.

problem Understanding the geometric properties of holomorphic curves in moduli spaces.
method Analyzing the quasi-isometric immersion of holomorphic maps from hyperbolic surfaces to moduli spaces.
result Holomorphic curves are quasi-isometrically immersed with parameters depending on surface and moduli space properties.

The paper develops theory for holomorphic null curves in SL2(C).

problem Developing theory for holomorphic null curves in SL2(C).
method Establish Runge, Mergelyan, Mittag-Leffler, and Carleman type theorems for holomorphic null immersions.
result Proves every open Riemann surface admits a proper holomorphic null embedding into SL2(C).

Projective surfaces metrisability linked to pseudo-holomorphic curves existence.

problem Metrisability of projective surfaces.
method Equivalence between metrisability and pseudo-holomorphic curves existence.
result Metrisability of projective surfaces is equivalent to the existence of pseudo-holomorphic curves.

We initiate here the study of Gromov-Witten theory of locally conformally symplectic manifolds or $\lcs$ manifolds, $\lcsm$'s for short, which are a natural generalization of both contact and symplectic manifolds. We find that the main new phenomenon (relative to the symplectic case) is the potential existence of holom…

2016-09-28abs ↗pdf ↗

Study on null-torsion holomorphic curves in 6-sphere, focusing on their second variation.

problem Characterize the second variation of area for null-torsion holomorphic curves in the round 6-sphere.
method Analyzing the spectrum of the Jacobi operator for compact null-torsion holomorphic curves.
result For g6g \leq 6, the multiplicity of the lowest eigenvalue λ1=2λ_1 = -2 is exactly 4d4d.

Study Dirac-harmonic maps on Riemann surfaces and their relation to J-holomorphic curves.

problem Understanding critical points of fermionic action functionals on Riemann surfaces.
method Analyzing Dirac-harmonic maps and their relation to J-holomorphic curves on Kaehler manifolds.
result The tangent bundle to the moduli space of J-holomorphic curves consists of Dirac-harmonic maps.

We study the JJ-holomorphic curves in the symplectization of the contact manifolds and prove that there exists at least one periodic Reeb orbits in any closed contact manifold with any contact form by using the well-known Gromov's nonlinear Fredholm alternative for JJ-holomorphic curves. As a corollary, we give a com…

2000-04-07abs ↗pdf ↗

Analytic plane curves determine unique conformal coordinates.

problem Determining a conformal coordinate system for analytic plane curves.
method Holomorphic continuation of the Frenet curvature form.
result Holomorphic continuation of the curvature form uniquely determines a conformal coordinate net.

The study confirms Gromov's speculation and provides bounds for taming symplectic structures.

problem Understanding the relationship between taming symplectic structures and the area of pseudoholomorphic curves.
method Analyzes the numerical cone of taming symplectic structures and characterizes coarsely holomorphic curves.
result An almost complex manifold with an area bound admits a taming symplectic structure, confirming Gromov's speculation.

The paper finds many negatively curved Kähler metrics on complex manifolds.

problem Finding Kähler metrics with negative curvature on complex manifolds.
method Analyzes vector bundles and proves dimension estimates and Liouville theorems.
result Proves existence of complete Kähler metrics with negative curvature on certain total spaces.

In this article, we reformulate the cobordism map of embedded contact homology, which is induced by exact symplectic cobordism and defined as direct limit of homomorphisms called filtered ECH cobordism map. The filtered ECH cobordism map is defined by counting embedded holomorphic curves with zero ECH index and we prov…

2017-03-27abs ↗pdf ↗

The study explores holomorphic Legendrian curves and superminimal surfaces in complex projective and sphere spaces.

problem Characterizing and embedding holomorphic Legendrian curves and superminimal surfaces.
method Runge approximation theorem, bijective correspondence via twistor projection, finite genus analysis.
result Every open Riemann surface embeds into CP3\mathbb{CP}^3 as a complete holomorphic Legendrian curve.

Researchers classify special curved spheres in a complex space.

problem Classifying special holomorphic two-spheres in a complex Grassmannian.
method Completely classified noncongruent spheres with constant curvature and second fundamental form.
result Found all homogeneous spheres with constant curvature and second fundamental form.

We view conformal surfaces in the 4--sphere as quaternionic holomorphic curves in quaternionic projective space. By constructing enveloping and osculating curves, we obtain new holomorphic curves in quaternionic projective space and thus new conformal surfaces. Applying these constructions to Willmore surfaces, we show…

2003-06-09abs ↗pdf ↗

Gromov has shown how to construct holomorphic maps of the plane to a complex manifold with prescribed values on a lattice. In the present paper, a similar interpolation theorem for pseudo-holomorphic maps from the cylinder S to an almost-complex manifold (M,J) is proved. Properties of the space of pseudo-holomorphic ma…

2010-06-09abs ↗pdf ↗

Geometry of holomorphic curves from point of view of open Toda systems is discussed. Parametrization of curves related this way to non-exceptional simple Lie algebras is given. This gives rise to explicit formulas for minimal surfaces in real, complex and quaternionic projective spaces or complex quadrics. The paper ge…

1995-07-03abs ↗pdf ↗