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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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196392588784 · Jun 202019922001200920172026
48 results for multiplicity two

New examples of non-bumpy metrics on spheres and projective spaces with multiplicity.

problem Finding non-bumpy metrics with multiplicity on spheres and projective spaces.
method New area-and-separation estimate for minimal hypersurfaces with Morse index two.
result First examples of non-bumpy metrics with multiplicity on (n+1)(n+1)-spheres and projective spaces.

The paper classifies symmetric triads with multiplicities and their applications.

problem Classifying symmetric triads with multiplicities and their applications.
method Developed the theory of symmetric triads with multiplicities, classified abstract triads, and determined corresponding triads for commutative compact triads.
result Classified symmetric triads with multiplicities and their applications.

Paper defines multiplicities for quaternion eigenvalues without complex matrix concepts.

problem Defining multiplicities for quaternion eigenvalues without traditional matrix concepts.
method Introduces two definitions for algebraic and geometric multiplicities equivalent to classical definitions.
result Definitions are equivalent to classical ones and prove all properties easily.

The paper introduces new measures to quantify variability in decision tree models due to observational multiplicity.

problem The variability in decision tree models due to observational multiplicity.
method Introduces leaf regret and structural regret to decompose observational multiplicity.
result Structural regret is the primary driver of observational multiplicity, accounting for over 15 times the variability of leaf regret in some datasets.

We describe arbitrary multiplicative differential forms on Lie groupoids infinitesimally, i.e., in terms of Lie algebroid data. This description is based on the study of linear differential forms on Lie algebroids and encompasses many known integration results related to Poisson geometry. We also revisit multiplicative…

2010-01-04abs ↗pdf ↗

Two new inverse-free ELM algorithms for incremental and decremental learning are proposed.

problem Efficiently updating and removing multiple hidden nodes in ELM.
method Improved inverse-free recursive algorithms for Tikhonov regularization.
result Inverse-free algorithms for ELM with multiple hidden nodes and redundant nodes.

This thesis is about the study of Lie groupoids endowed with a compatible (multiplicative) differential 1-form. The motivation and scope of the present work is to study the geometry of PDEs using the formalism of Lie groupoids and multiplicative forms; as such, ideas from the two theories have to be introduced and expl…

2013-06-05abs ↗pdf ↗

We consider a continuous map f:MNf :M\to N between two manifolds and try to estimate its multiplicity from below, i.e. find a qq-tuple of pairwise distinct points x1,...,xqMx_1,..., x_q\in M such that f(x1)=f(x2)=...=f(xq)f(x_1) = f(x_2) = ... = f(x_q). We show that there are certain characteristic classes of vector bundle fTNTMf^*TN-TM that guarant…

2010-02-03abs ↗pdf ↗

The paper analyzes security issues in blockchain ecosystems with multiple SSPs and proposes two models for better stake management.

problem Security issues in blockchain ecosystems with multiple SSPs and stake fragmentation.
method Formalized the Multiple SSP Problem and analyzed two architectures: Model M\mathbb{M} and Model S\mathbb{S} through convex optimization and game-theoretic lens.
result Model S\mathbb{S} achieves tighter security guarantees through single validator sets and aggregated slashing logic.

We prove two explicit bounds for the multiplicities of Steklov eigenvalues σkσ_k on compact surfaces with boundary. One of the bounds depends only on the genus of a surface and the index kk of an eigenvalue, while the other depends as well on the number of boundary components. We also show that on any given smooth Rie…

2012-09-21abs ↗pdf ↗

The paper provides criteria and curvatures for singularities of curves in R^N.

problem Tackles the classification and characterization of singularities of curves in R^N.
method Systematic procedure for constructing criteria, explicit criteria for multiplicities 2-4, generalized curvatures.
result Generalized curvatures reinterpret Fukui's theorem for curves of finite multiplicities.

We study the multiplicity sets of first order symbols associated with differential operators on two dimensional surfaces. This work is inspired by the phenomenon of conical refraction explained by the existence of singularities in the Fresnel hyper-surface for Maxwell's equations on an anisotropic crystal.

2013-11-04abs ↗pdf ↗

Matrix multiplication is a fundamental building block for large scale computations arising in various applications, including machine learning. There has been significant recent interest in using coding to speed up distributed matrix multiplication, that are robust to stragglers (i.e., machines that may perform slower …

2019-05-16abs ↗pdf ↗

We develop a multivalued theory for the stability operator of (a constant multiple of) a minimally immersed submanifold ΣΣ of a Riemannian manifold M\mathcal{M}. We define the multiple valued counterpart of the classical Jacobi fields as the minimizers of the second variation functional defined on a Sobolev space of …

2017-01-30abs ↗pdf ↗

New bases found for Kauffman bracket skein module of fibered torus.

problem Computing Kauffman bracket skein module of fibered 3-manifolds.
method Constructed bases for Kauffman bracket skein module of product annulus and circle, then applied to (β,2)(β,2)-fibered torus.
result Found a new basis for KBSM of (β,2)(β,2)-fibered torus.

For simple Lie groups, the only homogeneous manifolds G/KG/K, where KK is maximal compact subgroup,for which the phase of the scalar product of two coherent state vectors is twice the symplectic area of a geodesic triangle are the hermitian symmetric spaces. An explicit calculation of the multiplicative factor on the c…

2004-08-18abs ↗pdf ↗

In this paper, we study strictly convex affine hypersurfaces centroaffinely congruent to their centre map, in the case when the shape operator has two distinct eigenvalues: one of multiplicity 1, and one nonzero of multiplicity n-1. We show how to construct them from (n-1)-dimensional affine hyperspheres.

2012-06-01abs ↗pdf ↗

This paper tackles deferral learning with multiple experts, providing strong theoretical guarantees.

problem Optimizing input assignment to experts balancing accuracy and computational cost.
method Introducing new surrogate loss functions and efficient algorithms with strong theoretical learning guarantees.
result Realizable HH-consistency, HH-consistency bounds, and Bayes-consistency for deferral learning.

Study proves existence and convergence of discrete-time Kyle models with multiple insiders.

problem Existence and convergence of discrete-time Kyle models with multiple informed traders.
method Proves existence and convergence of discrete-time Kyle models with multiple informed traders using mathematical proofs.
result Equilibrium exists and converges to continuous-time equilibrium as the number of trading times increases.

This paper calculates interaction strength for translation surfaces with multiple singularities.

problem Computing the interaction strength of translation surfaces with multiple singularities is challenging.
method The authors study interaction strength of specific families of translation surfaces, including regular polygons and Bouw-Möller surfaces.
result The paper provides exact computations of KVol on translation surfaces with multiple singularities.

Extended symmetric union with multiple tangle regions and Alexander polynomial properties.

problem Characterizing knots with multiple tangle regions.
method Generalizing the symmetric union construction to include multiple tangle regions and analyzing the Alexander polynomial.
result The Alexander polynomial of the constructed knot is the product of the Alexander polynomials of the tangles and the square of the partial knot's Alexander polynomial.

Advances in molecular "omics'" technologies have motivated new methodology for the integration of multiple sources of high-content biomedical data. However, most statistical methods for integrating multiple data matrices only consider data shared vertically (one cohort on multiple platforms) or horizontally (different …

2019-06-09abs ↗pdf ↗

The study proves analogues of the discrete isoperimetric inequality in hyperbolic geometry.

problem Finding the minimum perimeter for polygons with a fixed area in hyperbolic geometry.
method Proving analogues of the discrete isoperimetric inequality for cyclic and tangential polygons in hyperbolic geometry, considering both single and multiple polygons.
result Established two versions of the isoperimetric inequality for multiple polygons in hyperbolic geometry with certain area or perimeter restrictions.