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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.

169,341 papers · 148 categories

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48 results for Disjoint tuples

A new approach to Morse theory using folded ribbon trees.

problem Applying Morse theory on symmetric products of surfaces.
method Introducing an A-infinity category with objects as κ-tuples of Morse functions, and showing conditions for the endomorphism to be a Hecke algebra.
result The endomorphism of a specific type of κ-tuple of Morse functions on T*R^2 is the Hecke algebra associated to the symmetric group.

A gg-tuple of disjoint, linearly independent circles in a Riemann surface of genus gg determines a `Heegaard torus' in its gg-fold symmetric product. Changing the circles by a handleslide produces a new torus. It is proved that, for symplectic forms with certain properties, these two tori are Hamiltonian-isotopic La…

2008-01-03abs ↗pdf ↗

A new theorem eliminates higher-multiplicity intersections in manifold topology.

problem Eliminating intersections in manifold topology, especially in higher dimensions.
method Proved and applied the rr-fold Whitney trick for proper maps from disjoint unions of disks to dd-dimensional balls.
result A continuous map can be modified to avoid intersections in higher dimensions.

Shows uniqueness of irreducible generating tuples for Fuchsian groups.

problem Identifying irreducible generating tuples in Fuchsian groups.
method Variation of ideas from \cite{W2} to show uniqueness of almost orbifold covers with rigid generating tuples.
result Irreducible generating tuples are unique up to equivalence and are irreducible.

Unified framework for N-tuples learning improves weakly supervised tasks.

problem Reducing annotation burden in supervised learning.
method Empirical risk minimization framework integrating pointwise unlabeled data.
result Framework improves generalization across various N-tuples learning tasks.

As previously known, all 3-manifolds of genus two can be represented by edge-coloured graphs uniquely defined by 6-tuples of integers satisfying simple conditions. The present paper describes an ``elementary transformation'' on these 6-tuples which changes the associated graph but does not change the represented manifo…

2000-03-14abs ↗pdf ↗

Paper establishes equivalence between algebraic and functorial QFTs.

problem Challenges in globally hyperbolic Lorentzian bordisms and their impact on field theories.
method Introduces a new concept of bordisms and pseudo-operads to address challenges, defining FQFTs as pseudo-multifunctors.
result Equivalence theorem between globally hyperbolic Lorentzian FQFTs and AQFTs.

InfoTuple efficiently selects larger tuple queries for ranking multiple objects, improving efficiency and consistency.

problem Efficiently selecting and ranking multiple objects for similarity learning.
method Adaptive selection method using mutual information maximization.
result InfoTuple outperforms state-of-the-art methods on synthetic and human response datasets.

DSRGAN learns independent structure and rendering without tuple supervision.

problem Learning disentangled representation for natural image generation without tuple supervision.
method Introducing an auxiliary domain with a common underlying-structure space, and designing a parallel generative network with a common Progressive Rendering Architecture.
result DSRGAN significantly outperforms state-of-the-art methods in disentanglability.

BHLR predicts hyperlink weights from data vectors using symmetric similarity functions and Bregman divergence.

problem Predicting hyperlink weights from data vectors in a general framework.
method BHLR learns a symmetric similarity function to minimize Bregman-divergence between hyperlink weights and estimated similarities.
result BHLR is statistically consistent and computationally tractable, providing theoretical guarantees for various methods.

This work extends GNNs to handle multiple graphs with non-commuting operators, proving transferability.

problem Handling multiple graphs with non-commuting operators in graph neural networks.
method Developed a mathematical theory for graph-tuple neural networks (GtNNs) with non-commuting non-expansive operators.
result Proved universal transferability of GtNNs, ensuring no non-transferable energy under convergence.

Researchers solve the realization of Jordan-Kronecker invariants in Lie algebras.

problem Identifying which Jordan-Kronecker invariants can be realized by Lie algebras.
method Analyzing the Kronecker and Jordan cases, proving impossibility for certain invariants, and describing realizability for others.
result Complete solution for Jordan and Kronecker cases, partial answers for others.

The paper provides an algorithm to create curves touching a smooth cubic at specific intersection points.

problem Creating curves that touch a smooth cubic at specific intersection points.
method Algorithm based on divisions and Zariski tuples to produce nn-contact curves.
result An algorithm to generate nn-contact curves to a smooth cubic.

We show that for every n2n\ge 2 there exists a torsion-free one-ended word-hyperbolic group GG of rank nn admitting generating nn-tuples (a1,,an)(a_1,\ldots ,a_n) and (b1,,bn)(b_1,\ldots ,b_n) such that the (2n1)(2n-1)-tuples $$(a_1,\ldots ,a_n, \underbrace{1,\ldots ,1}_{n-1 \text{times}})\hbox{ and }(b_1,\ldots, b_n, \underbrace{…

2013-09-28abs ↗pdf ↗

The article studies Hamiltonian flows on surface group representations induced by invariant multi-functions.

problem Hamiltonian flows on surface group representations induced by invariant multi-functions.
method Introducing subsurface deformation and proving Poisson commutativity of induced invariant multi-functions.
result Hamiltonian flows on character varieties are of subsurface deformation type and Poisson commute if supporting subsurfaces are disjoint.

Study meromorphic k-differentials on Riemann surfaces, focusing on their singularities.

problem Characterize the local invariants of meromorphic k-differentials on Riemann surfaces.
method Analyzing orders of zeroes and poles, and k-residues at poles, for different genera.
result For genus g ≥ 2, every expected tuple of k-residues appears as actual residues.

Let GG be a group given by the presentation [<a_1,...,a_k,b_1,... b_k\,| a_i=u_i(\bar b), b_i=v_i(\bar a) \hbox{for} 1\le i\le k>,] where k2k\ge 2 and where the uiF(b1,...,bk)u_i\in F(b_1,..., b_k) and wiF(a1,...,ak)w_i\in F(a_1,..., a_k) are random words. Generically such a group is a small cancellation group and it is clear that $(a_1,...,…

2010-11-26abs ↗pdf ↗

Improved analysis for extreme multi-class CRL with better sample complexity.

problem Theoretical sample complexity of CRL in extreme multi-class settings is poorly understood.
method Improved U-Statistics estimator to capture class concentration, proving O(k)\mathcal{O}(k) sample complexity.
result Sample complexity is O(k)\mathcal{O}(k) for extreme multi-class learning, independent of class distribution.

The paper introduces Absolute Shapley Value to handle negative contributions in machine learning model training.

problem Negative marginal contributions in machine learning model training.
method Investigates three philosophies: Original Shapley Value, Zero Shapley Value, and Absolute Shapley Value.
result Absolute Shapley Value significantly outperforms other definitions in evaluating data importance.

A Heegaard splitting of a closed, orientable three-manifold satisfies the disjoint curve property if the splitting surface contains an essential simple closed curve and each handlebody contains an essential disk disjoint from this curve [Thompson, 1999]. A splitting is full if it does not have the disjoint curve proper…

2004-01-28abs ↗pdf ↗

The study connects polygon areas and projective structures in 3D space.

problem Relating polygon areas and projective structures in 3D space.
method Investigates positive tuples of complete flags in R^3 and their associated polygons in RP^2.
result Establishes a relationship between Holmes-Thompson area and projective structures.

Let (G) be a connected compact non-abelian Lie-group and (T) a maximal torus of (G). A torus manifold with (G)-action is defined to be a smooth connected closed oriented manifold of dimension (2\dim T) with an almost effective action of (G) such that (M^T\neq \emptyset). We show that if there is a torus manifold (M) wi…

2009-11-25abs ↗pdf ↗

We present a new property, the Disjoint Path Concordances Property, of an ENR homology manifold X which precisely characterizes when X times R has the Disjoint Disks Property. As a consequence, X times R is a manifold if and only if X is resolvable and it possesses this Disjoint Path Concordances Property.

2009-03-17abs ↗pdf ↗

Paper analyzes CRL generalization under non-i.i.d. settings, providing bounds for practical data reuse.

problem Limited theoretical understanding of CRL generalization under non-i.i.d. data conditions.
method Inspired by U-statistics, derives generalization bounds for CRL under non-i.i.d. settings.
result Required number of samples scales logarithmically with class covering number.

Classifies 3-manifolds from simplified (2,0)-trisections of 4-manifolds.

problem Classifying 3-manifolds from simplified (2,0)-trisections of 4-manifolds.
method Classifies vertical 3-manifolds as preimages of arcs on the plane for simplified (2,0)-trisection maps.
result Each 6-tuple of vertical 3-manifolds determines the source 4-manifold uniquely up to orientation reversing diffeomorphisms.

Extends geostatistical simulation method to handle multiple variables and large grids.

problem Scalability and handling of multiple variables in geostatistical simulation.
method Uses Sinkhorn optimal transport with sparse matcher and FFT-MA Gaussian backbone.
result MST-Direct reproduces joint distribution with zero histogram error and accurately preserves spatial correlation.

A mathematical isomorphism connects Floer homology to DAHA representations.

problem Connecting Floer homology to DAHA representations.
method Isomorphism between Floer homology and DAHA module structure.
result Establishes equivalence between DAHA polynomial representation and Floer homology module structure.