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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.

168,742 papers · 148 categories

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114228342456 · Jun 202019922001200920172026
48 results for Double Representer Theorem

The paper extends Hodge-de Rham and Lichnérowicz Laplacians to double forms and proves vanishing theorems.

problem Extending Laplacians to double forms and proving vanishing theorems.
method Introduced a new product on double forms to establish index-free formulas for curvature terms in Weitzenböck formulas for ΔΔ, Δ~\widetildeΔ, and ΔLΔ_L. Proved vanishing theorems for ΔΔ and ΔLΔ_L on symmetric double forms.
result Vanishing theorems for the Hodge-de Rham Laplacian and ΔLΔ_L on symmetric double forms.

Paper develops a duality approach for robust loss functions in infinite-dimensional RKHSs.

problem Robustness issues in infinite-dimensional RKHSs with operator-valued kernels.
method Develops a duality approach to solve OVK machines for various loss functions.
result Empirical improvements and theoretical stability analysis for robust structured data applications.

Heegaard Floer homology connects to polynomial representations of Hecke algebras.

problem Understanding polynomial representations of double affine Hecke algebras.
method Using higher-dimensional Heegaard Floer homology and topological interpretations.
result Recovery of polynomial representations from Heegaard Floer homology.

We use the exterior product of double forms to reformulate celebrated classical results of linear algebra about matrices and bilinear forms namely the Cayley-Hamilton theorem, Laplace expansion of the determinant, Newton identities and Jacobi's formula for the determinant. This new formalism is then used to naturally g…

2011-12-06abs ↗pdf ↗

The paper proves an infinite double bubble theorem in higher dimensions.

problem Characterizing minimizing partitions of infinite and finite volumes in Rn\mathbb{R}^n.
method Proves a variant of the double bubble theorem for configurations with infinite and finite chambers.
result Locally minimizing (1,2)(1,2)-clusters are unique in Rn\mathbb{R}^n for n7n\leq 7 and n8n\geq 8 under certain conditions.

The paper proves that rational concordance of double twist knots is reciprocal.

problem Determining when double twist knots are rationally slice.
method Using Donaldson's diagonalization theorem, the paper constructs rational ball obstructions for non-rational sliceness.
result Infinitely many prime power-fold cyclic branched covers do not bound a rational ball, proving the converse of rational concordance.

Paper classifies compact symmetric triads using double Satake diagrams and canonical forms.

problem Classifying compact symmetric triads.
method Introducing double Satake diagrams and canonical forms, proving their existence and properties.
result Existence and properties of canonical forms for compact simple symmetric triads.

The most important examples of a double vector bundle are provided by iterated tangent and cotangent functors: TTM, TT^*M, T^*TM, and T^*T^*M. We introduce the notions of the dual double vector bundle and the dual double vector bundle morphism. Theorems on canonical isomorphisms are formulated and proved. Several examp…

1997-10-16abs ↗pdf ↗

Paper doubles Hessian estimates for special Lagrangian equation with constraints.

problem Estimating Hessian for special Lagrangian equation under general phase constraints.
method Doubling argument, Alexandrov-type theorems.
result Established Hessian estimates for special Lagrangian equation.

We show that double Lie algebroids, together with a chosen linear splitting, are equivalent to pairs of 2-term representations up to homotopy satisfying compatibility conditions which extend the notion of matched pair of Lie algebroids. We discuss in detail the tangent of a Lie algebroid.

2014-09-04abs ↗pdf ↗

In this paper we show that topological subgroupoids of Lie groupoids, under special circumstances are Lie subgroupoids. Giving an example, we indicate that having the same topological dimension is a necessary condition for topological subgroupoids to be Lie subgroupoids. Also, we provide some conditions for double subg…

2018-03-14abs ↗pdf ↗

Factorization of DE coefficients is violated in antiparallel triple pretzels, but described elegantly.

problem Understanding the origins of factorization in double braids and its extension to antiparallel triple pretzels.
method Defect-preserving deformation from trefoil to antiparallel triple pretzels, analysis of DE coefficients.
result Factorization of DE coefficients is violated but described by an elegant formula for symmetric representations.

Study on double descent behavior in two-layer neural networks for binary classification.

problem Understanding the double descent phenomenon in model test error.
method Two-layer neural network with ReLU activation for binary classification. Quantified model size by sample-to-dimension ratio. Empirical risk minimization using Convex Gaussian Min Max Theorem.
result Observed and investigated the double descent behavior of model test error.

The paper explores conic-line arrangements via Poncelet's theorem and finds families of reducible curves.

problem Understanding the topology of conic-line arrangements using Poncelet's theorem.
method Study unramified double covers induced by Poncelet transverses.
result Existence of families of Zariski pairs of degree 2m+62m+6 for m2m\geq 2.

The classic double bubble theorem says that the least-perimeter way to enclose and separate two prescribed volumes in RN\mathbb{R}^N is the standard double bubble. We seek the optimal double bubble in RN\mathbb{R}^N with density, which we assume to be strictly log-convex. For N=1N=1 we show that the solution is sometime…

2017-08-10abs ↗pdf ↗

Research decouples Lie algebroids using bicocycle double cross product theory.

problem Understanding decoupling and coupling phenomena in Lie algebroids.
method Bicocycle double cross product realization method.
result Unified product, double cross product, semi-direct product, and cocycle extension frameworks are instances of the general method.

Paper analyzes double twist knots using adjoint hyperbolic torsion polynomial.

problem Determining the genus and fibering of double twist knots.
method Uses adjoint hyperbolic torsion polynomial to analyze double twist knots.
result The adjoint hyperbolic torsion polynomial determines the genus and fibering of double twist knots.

Factorization of the differential expansion coefficients for HOMFLY-PT polynomials of double braids, discovered in arXiv:1606.06015 in the case of rectangular representations RR, is extended to the first non-rectangular representations R=[2,1]R=[2,1] and R=[3,1]R=[3,1]. This increases chances that such factorization will take p…

2016-12-01abs ↗pdf ↗

Paper optimizes prediction in semi-functional linear models using kernel methods.

problem Optimizing prediction in semi-functional linear models with functional and nonparametric components.
method Double-penalized least squares method in reproducing kernel Hilbert spaces, with regularization parameter selection via generalized cross validation.
result Achieves minimax optimal rates of convergence for both functional and nonparametric components.

Paper tackles utility maximization with job-switching and retirement constraints.

problem Maximizing utility with job-switching and retirement constraints.
method Dual-martingale approach and double obstacle problem theory.
result Characterization of optimal job-switching strategy and wealth boundaries.

We generalise theorems of Khodorovskiy and Park-Park-Shin, and give new topological proofs of those theorems, using embedded surfaces in the 4-ball and branched double covers. These theorems exhibit smooth codimension-zero embeddings of certain rational homology balls bounded by lens spaces.

2017-07-04abs ↗pdf ↗

Geometric arguments show simplicial arrangements with few double points can't have an irreducible cubic curve dual.

problem Classifying simplicial arrangements with a linear bound on double points.
method Geometric arguments and structure theorem from Green and Tao.
result Simplicial arrangements with few double points can't have an irreducible cubic curve dual.

New minimal surface doublings of Clifford Torus improve bounds on minimal surfaces in S^3.

problem Proving bounds on minimal surfaces in S^3 with fixed genus.
method Applying a general theorem to produce new minimal doublings of the Clifford Torus, using min-max methods, and verifying Yau's conjecture.
result Improved quadratic lower bound for the number of embedded minimal surfaces in S^3 with prescribed genus.

We use a new approach that we call unification to prove that standard weighted double bubbles in nn-dimensional Euclidean space minimize immiscible fluid surface energy, that is, surface area weighted by constants. The result is new for weighted area, and also gives the simplest known proof to date of the (unit weight…

2012-12-19abs ↗pdf ↗

Researchers found all embeddings of Kuratowski graphs on a double torus.

problem Characterizing embeddings of Kuratowski graphs K3,3K_{3,3} and K5K_5 on the double torus.
method Constructive approach using Burnside's Lemma and automorphism groups.
result 14 orientable and 17 non-orientable 2-cell embeddings of K5K_5 on the double torus.

This paper studies covariant derivatives for Lie groupoids with representation-valued forms.

problem Understanding covariant derivatives for Lie groupoids with representation-valued forms.
method The paper explores two approaches: linear connections and multiplicative Ehresmann connections, both yielding geometrically richer curved double complexes.
result The horizontal exterior covariant derivative DD is a key finding, generalizing the well-known operator from principal bundles.

New theorem for generalized group sparsity improves consistency and convergence rates.

problem Improving statistical inference in high-dimensional data with element-wise and group-wise sparsity.
method Developed a generalized version of Sparse-Group Lasso and proved a universal theorem for consistency and convergence rates.
result Obtained results on consistency and convergence rates for different forms of double sparsity regularization.

Study shows label noise impacts neural representations' information content, revealing double descent behavior.

problem Impact of label noise on neural network hidden representations.
method Information Imbalance proxy of conditional mutual information to compare hidden representations.
result Representations learned with noisy labels are more informative than those with clean labels in the underparameterized regime, and equally informative in the overparameterized regime.

News might trigger jump arrivals in financial time series. The "bad" and "good" news seems to have distinct impact. In the research, a double exponential jump distribution is applied to model downward and upward jumps. Bayesian double exponential jump-diffusion model is proposed. Theorems stated in the paper enable est…

2014-04-08abs ↗pdf ↗

This paper describes an equivalence of the canonical category of N\mathbb N-manifolds of degree 22 with a category of involutive double vector bundles. More precisely, we show how involutive double vector bundles are in duality with double vector bundles endowed with a linear metric. We describe then how special sect…

2017-07-21abs ↗pdf ↗

Generalizes LD approach to create minimal surfaces and self-shrinkers.

problem Creating minimal surfaces and self-shrinkers using a generalized LD approach.
method Proves a theorem for constructing minimal surfaces using LD solutions and PDE gluing methods.
result Constructs new minimal surfaces and self-shrinkers via LD solutions and PDE gluing.

A theorem of Furuta and Fintushel-Stern provides a criterion for a collection of Seifert fibred homology spheres to be independent in the homology cobordism group of oriented homology 3-spheres. In this article we use these results and some 4-dimensional constructions to produce infinite families of positive torus knot…

2017-12-14abs ↗pdf ↗