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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.

168,695 papers · 148 categories

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60120179239 · Jun 202019922001200920172026
48 results for power curves

Unified theory for neural scaling laws in hierarchically compositional data.

problem Understanding neural scaling laws in hierarchically compositional data.
method Probabilistic context-free grammars and power-law distributed production rules.
result Unified learning curve behavior for classification and next-token prediction tasks.

Estimates the number of closed curves on surfaces with power-saving error terms.

problem Counting closed curves on surfaces with given properties.
method Effective dynamics of mapping class group on Teichmüller space and space of closed curves, introducing novel methods.
result Proves estimates with power-saving error terms for filling closed curves and curves with respect to a current.

Paper tackles temporal overfitting in wind power curve modeling.

problem Temporal overfitting in wind power curve modeling.
method Proposes a Gaussian process-based method to partition and model time-invariant and time-varying components.
result Significant improvement in predicting responses for different time periods.

The paper presents a multi-power law for predicting loss curves across different learning rate schedules.

problem Understanding and optimizing the relationship between model performance and hyperparameters, especially learning rates.
method Proposes a multi-power law that combines power laws based on the sum of learning rates and additional laws for loss reduction due to decay.
result The multi-power law accurately predicts loss curves for unseen learning rate schedules and finds a schedule that outperforms cosine learning rate.

We give a new algorithm to simplify a given triangulation with respect to a given curve. The simplification uses flips together with powers of Dehn twists in order to complete in polynomial time in the bit-size of the curve.

2016-04-14abs ↗pdf ↗

Fold maps associated to geodesic random walks on curved spaces.

problem Understanding the behavior of geodesic random walks on curved surfaces.
method Analyzing mappings from the unit tangent sphere to a manifold with non-positive curvature.
result For odd powers of the unit tangent sphere, these mappings are fold maps.

The normalized Yamada polynomial is a polynomial invariant in variable A for theta-curves. In this work, we show that the coefficients of the power series obtained from this polynomial by the substitution A=e^x=1+x+x^2/2+x^3/6+... are finite-type invariants for theta-curves although the coefficients of original polynom…

2001-04-18abs ↗pdf ↗

Let SgS_g be a closed orientable surface of genus g2g \geq 2 and CC a simple closed nonseparating curve in FF. Let tCt_C denote a left handed Dehn twist about CC. A \textit{fractional power} of tCt_C of \textit{exponent} $\fraction{\ell}{n}$ is an $h \in \Mod(S_g)$ such that hn=tCh^n = t_C^{\ell}. Unlike a root of a $t…

2012-07-16abs ↗pdf ↗

Study on quadratic L-functions using hyperelliptic curves and homology.

problem Understanding moments of families of quadratic L-functions.
method Homological stability theorem and computations of homology.
result Confirmations of Conrey-Farmer-Keating-Rubinstein-Snaith predictions for large prime powers.

The paper compares DL models to WP curve modeling for forecasting with irregular shutdowns.

problem Forecasting wind power with irregular shutdowns due to redispatching.
method Compared autoregressive DL models to WP curve modeling.
result WP curve modeling achieves lower forecasting errors and is more computationally efficient.

Takamura established a theory on splitting families of degenerations of complex curves. He introduced a powerful method for constructing a splitting family, called a barking family, in which there appear not only a singular fiber over the origin but also singular fibers over other points, called subordinate fibers. In …

2012-05-08abs ↗pdf ↗

CR invariant differential operators on densities with leading part a power of the sub-Laplacian are derived. One family of such operators is constructed from the ``conformally invariant powers of the Laplacian'' via the Fefferman metric; the powers which arise for these operators are bounded in terms of the dimension. …

2003-01-09abs ↗pdf ↗

In general, the product of harmonic forms is not harmonic. We study the top exterior power of harmonic two-forms on compact Kaehler manifolds. Often, it is not harmonic. This phenomenon is related to the geometry of the manifold and to the existence of rational curves in particular. K3 surfaces and hyperkaehler manifol…

2000-03-29abs ↗pdf ↗

Optimal bounds on rational points on algebraic curves established.

problem Bounding the number of rational points on algebraic curves of degree dd.
method Combination of smooth parametrizations and Pólya's criterion.
result Optimal upper bound Cd2H2/d(logH)κC d^2 H^{2/d} (\log H)^κ with constants CC and κκ.

Unified four trade-off curves for assessing generative model proximity.

problem Quantitative assessment of proximity between two probability distributions.
method Unified four existing curves: PR, Lorenz, ROC, and Rényi divergence frontiers.
result Explicit relationship between PR and Lorenz curves with domain adaptation bounds.

This paper aims to systematically and comprehensively initiate a foundation for using concepts from computational differential geometry as instruments for power flow computing and research. At this point we focus our discussion on the static case, with power flow equations given by quadratic functions defined on voltag…

2019-03-26abs ↗pdf ↗

Maryam Mirzakhani (in her doctoral dissertation) has proved the author's conjecture that the number of simple curves of length bounded by L on a hyperbolic surface S is assymptotic to a constant times L to the power d, where d is the dimension of the Teichmuller space of S. In this note we clarify and simplify Mirzakha…

2005-12-02abs ↗pdf ↗

We develop and apply an approach for analyzing multi-curve data where each curve is driven by a latent state process. The state at any particular point determines a smooth function, forcing the individual curve to switch from one function to another. Thus each curve follows what we call a switching nonparametric regres…

2015-04-10abs ↗pdf ↗

The study examines Heegaard splittings defined by Dehn twists and finds hyperbolic metrics with specific geodesic lengths.

problem Characterizing Heegaard splittings defined by Dehn twists and their geometric properties.
method Examining Heegaard splittings of genus g3g \geq 3 defined by the nn-th power of a Dehn twist along a pared acylindrical curve.
result For n14n \geq 14, the Heegaard splitting has a hyperbolic metric with a closed geodesic of length between 0.7/(n2g2)0.7/(n^2g^2) and 34.3/n234.3/n^2.

The paper characterizes simple closed curves on surfaces using profinite rigidity.

problem Characterizing simple closed curves on surfaces using profinite rigidity.
method Proving that elements with the same images under all finite groups are simple closed curves.
result The set of simple closed curves is closed in the profinite topology of the surface group.

In the first part of this paper we prove that the mapping class subgroups generated by the DD-th powers of Dehn twists (with D2D\geq 2) along a sparse collection of simple closed curves on an orientable surface are right angled Artin groups. The second part is devoted to power quotients, i.e. quotients by the normal s…

2009-10-08abs ↗pdf ↗

Affine varieties among all algebraic varieties have simple structures. For example, an affine variety does not contain any complete algebraic curve. In this paper we study affine related properties of strata of kk-differentials on smooth curves which parameterize sections of the kk-th power of the canonical line bund…

2017-06-04abs ↗pdf ↗

The study examines the rigidity of mapping class groups under large powers of twists.

problem Quasi-isometric rigidity of mapping class groups under large powers of twists.
method Analyzing quotients of mapping class groups by large powers of Dehn twists, using techniques from hierarchically hyperbolic spaces.
result Quasi-isometric rigidity and small automorphism groups of the studied quotients.

Study compares two market clearing methods for European power markets.

problem Optimizing market clearing for European power markets considering cost and social welfare.
method Introduces Cost Minimization and Social Welfare Maximization models, and four algorithms to solve the CM model.
result Cost Minimization reduces market power and decreases total procurement cost.

This is the first of a series of articles in which we are going to study the regularized determinants of the Laplacians of Calabi Yau metrics acting on (0,q) forms on the moduli space of CY manifolds with a fixed polarization. It is well known that in case of the elliptic curves the Kronecker limit formula gives an exp…

2005-03-12abs ↗pdf ↗