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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.

168,657 papers · 148 categories

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48 results for entire functions

Study of holomorphic correspondences combining entire maps and Fuchsian groups.

problem Understanding dynamics of entire maps and their interactions with Fuchsian groups.
method Systematic study of (:)(\infty : \infty) holomorphic correspondences arising from conformal combinations of transcendental entire maps and Fuchsian groups.
result The resulting correspondence is the composition of a Möbius involution and the deleted covering correspondence of a meromorphic function with a simple pole.

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 ↗

The paper proves asphericity of configuration spaces and covers them with entire functions.

problem Proving asphericity of configuration spaces and classifying covering spaces.
method Using algebraic topology and covering spaces theory.
result Locally finite infinite configuration spaces are aspherical and coverings can be realized by entire functions.

We consider self-similar solutions to mean curvature evolution of entire Lagrangian graphs. When the Hessian of the potential function uu has eigenvalues strictly uniformly between -1 and 1, we show that on the potential level all the shrinking solitons are quadratic polynomials while the expanding solitons are in one…

2009-05-24abs ↗pdf ↗

Unified probabilistic gradient boosting for entire conditional distribution modeling.

problem Creating accurate probabilistic forecasts from regression tasks.
method Unified probabilistic gradient boosting framework using XGBoost and LightGBM, modeling conditional moments or CDF via Normalizing Flows.
result Achieves state-of-the-art forecast accuracy.

We study the uniqueness of a vortex equation involving an entire function on the complex plane. As geometric applications, we show that there is a unique harmonic map u:CH2u:\mathbb{C}\rightarrow \mathbb{H}^2 satisfying u0\partial u\neq 0 with prescribed polynomial Hopf differential; there is a unique affine spherical imm…

2017-10-30abs ↗pdf ↗

Curves in higher dimensions are either affine or have super-Euclidean energy growth.

problem Characterizing entire conformal curves in higher-dimensional spaces.
method Blow-down argument and interaction of generalized Cauchy--Riemann equations with calibrated geometries.
result Entire conformal curves are either affine or have super-Euclidean energy growth.

Proves existence and uniqueness of hypersurfaces with prescribed curvature in Minkowski space.

problem Prescribed curvature problem for entire hypersurfaces in Minkowski space.
method Analyzes functions and spacelike hypersurfaces to prove existence and uniqueness.
result Existence and uniqueness of entire, strictly convex, spacelike hypersurfaces with prescribed curvature.

Complex analytic sets' Lipschitz geometry at infinity characterized.

problem Characterize entire complex analytic sets based on their Lipschitz geometry at infinity.
method Proved a complex non-parametric version of Moser's Bernstein Theorem and characterized algebraicity.
result Entire complex analytic sets at infinity are affine linear subspaces if and only if they are bi-Lipschitz homeomorphic to algebraic sets.

Study on evolving graphs of functions under mean curvature flow in R^n.

problem Proving long-time existence and convergence of special Lagrangian evolution equation.
method Consider the graph of a C2C^2 function uu on Rn\mathbb{R}^n, deform it by mean curvature flow, and analyze under 2-positivity assumption.
result Proves long-time existence and convergence results under 2-positivity assumption, improving previous results.

New method uses DistRL to estimate entire payoff distribution for financial derivatives.

problem Traditional methods focus on expected option value; this tackles risk-aware pricing.
method Reinterprets and proposes a framework using Distributional Reinforcement Learning (DistRL).
result Demonstrates enhanced risk-aware pricing and uncertainty quantification on Asian options.

On a spin manifold with conformal cusps, we prove under an invertibility condition at infinity that the eta function of the twisted Dirac operator has at most simple poles and is regular at the origin. For hyperbolic manifolds of finite volume, the eta function of the Dirac operator twisted by any homogeneous vector bu…

2009-01-16abs ↗pdf ↗

We prove that square integrable holomorphic functions (with respect to a plurisubharmonic weight) can be extended in a square integrable manner from certain singular hypersurfaces (which include uniformly flat, normal crossing divisors) to entire functions in affine space. This provides evidence for a conjecture regard…

2014-08-26abs ↗pdf ↗

New method optimizes black-box functions using generative models and Wasserstein distance.

problem Optimizing black-box functions with stochastic responses in high dimensions.
method Deep generative surrogate models and Wasserstein distance for uncertainty estimation.
result Method outperforms state-of-the-art methods in robustness to function shape and stochasticity.

Gradient estimates for special harmonic functions on manifolds.

problem Estimating gradients of (p,V)(p,V)-harmonic functions on Riemannian manifolds.
method Using Moser iteration method, volume comparison theorem, and Sobolev embedding theorem.
result Explicit global gradient estimates for positive entire (p,V)(p,V)-harmonic functions.

We exploit an ansatz in order to construct power series expansions for pairs of conjugate functions defined on domains of Euclidean 33--space. Convergence properties of the resulting series are investigated. Entire solutions which are not harmonic are found as well as a 22-parameter family of examples which contains …

2017-07-01abs ↗pdf ↗

Develops a method to construct entire minimal graphs of odd dimensions.

problem Constructing entire minimal graphs of odd dimensions and arbitrary codimensions.
method Evolving-plane ansatz reducing minimal surface system to geodesic equation on Grassmannian.
result Yields a rich family of explicit entire minimal graphs of odd dimension and arbitrary codimension.

In this paper, we study entire translating solutions u(x)u(x) to a mean curvature flow equation in Minkowski space. We show that if Σ={(x,u(x))xRn}Σ=\{(x, u(x))| x\in\mathbb{R}^n\} is a strictly spacelike hypersurface, then ΣΣ reduces to a strictly convex rank k soliton in Rk,1\mathbb{R}^{k, 1} (after splitting off trivial factors) wh…

2015-05-07abs ↗pdf ↗

Study shows zero level sets of solutions to Allen-Cahn equation are minimal surfaces with zero mean curvature.

problem Understanding phase transitions through entire solutions of the Allen-Cahn equation.
method Proving minimality of the zero level set with respect to a perimeter functional with density and showing zero mean curvature.
result The zero level set of entire solutions of the Allen-Cahn equation has zero mean curvature and is minimal.

A maximal surface $\sb$ with isolated singularities in a complete flat Lorentzian 3-manifold N\N is said to be entire if it lifts to a (periodic) entire multigraph $\tilde{\sb}$ in ł3.ł^3. In addition, $\sb$ is called of finite type if it has finite topology, finitely many singular points and $\tilde{\sb}$ is finitely …

2004-12-22abs ↗pdf ↗

In this paper, we study entire spacelike translating solitons in Minkowski space. By constructing convex spacelike solutions to (1.3) in bounded convex domains, we obtain many entire smooth convex strictly spacelike translating solitons by prescribing boundary data at infinity.

2012-04-09abs ↗pdf ↗

Reconstruction of density functions and their characteristic functions by radial basis functions with scattered data points is a popular topic in the theory of pricing of basket options. Such functions are usually entire or admit an analytic extension into an appropriate tube and "bell-shaped" with rapidly decaying tai…

2014-04-21abs ↗pdf ↗

A central result here is the computation of the entire cyclic homology of canonical smooth subalgebras of stable continuous trace C*-algebras having smooth manifolds M as their spectrum. More precisely, the entire cyclic homology is shown to be canonically isomorphic to the continuous periodic cyclic homology for these…

2004-12-24abs ↗pdf ↗

Proposes a new method to learn entire solution paths without discretization.

problem Optimizing a family of problems indexed by hyperparameters.
method Parameterizes the solution path with basis functions and solves a single stochastic optimization problem.
result Uniform error of learned path converges linearly to a constant related to basis expressiveness.

Let M be a real analytic Riemannian manifold. An adapted complex structure on TMTM is a complex structure on a neighborhood of the zero section such that the leaves of the Riemann foliation are complex submanifolds. This structure is called entire if it may be extended to the whole of TMTM. We prove here that the only …

2015-10-12abs ↗pdf ↗

The study finds hypersurfaces with constant scalar curvature in Minkowski space.

problem Finding hypersurfaces with constant scalar curvature in Minkowski space.
method Analyzes regular domains in Minkowski space and constructs hypersurfaces with constant scalar curvature.
result Hypersurfaces with constant scalar curvature exist and provide foliations of domains.
Open Marketsq-fin.MF

An open market is a subset of an entire equity market composed of a certain fixed number of top capitalization stocks. Though the number of stocks in the open market is fixed, the constituents of the market change over time as each company's rank by its market capitalization fluctuates. When one is allowed to invest al…

2019-12-30abs ↗pdf ↗

Zoll manifolds with entire Grauert tubes are proven to be standard complex projective spaces.

problem Characterizing Zoll manifolds with entire Grauert tubes.
method Isometric comparison to CPn\mathbb{CP}^n with the canonical metric.
result Zoll manifolds of type CPn\mathbb{CP}^n with entire Grauert tubes are isometric to CPn\mathbb{CP}^n.

Expressiveness and generalization of deep models was recently addressed via the connection between neural networks (NNs) and kernel learning, where first-order dynamics of NN during a gradient-descent (GD) optimization were related to gradient similarity kernel, also known as Neural Tangent Kernel (NTK). In the majorit…

2019-10-19abs ↗pdf ↗