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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.

169,181 papers · 148 categories

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48 results for Mellit's results

Study HOMFLY-PT homology structure for knots up to 11 crossings.

problem Understanding the structure of HOMFLY-PT homology for knots.
method Using Nakagane and Sano's knot data and the sl(2)\mathfrak{sl}(2) action, compute HOMFLY-PT SS-invariant and compare to sl(N)\mathfrak{sl}(N) invariants.
result Computed HOMFLY-PT SS-invariant for all knots in the dataset.

Constructs yy-ifications of Khovanov homology and proves compatibility with HOMFLY--PT.

problem Distinguishing knots with identical Khovanov and HOMFLY--PT homologies.
method Elementary construction within Bar-Natan's framework for tangles, defining ee-action on yy-ifications.
result New structures distinguish knots with identical homologies, e.g., Conway and Kinoshita-Terasaka knots.

Symmetric function LM,NL_{M,N} lifts torus link homology.

problem Computing the triply-graded Khovanov-Rozansky homology of torus links.
method Defined a symmetric function LM,NL_{M,N} and showed it satisfies a recursion for torus link homology.
result Triply-graded Khovanov-Rozansky homology of torus links is a specialization of LM,NL_{M,N}.

New Liouville-type results for CR Yamabe equation in Heisenberg group.

problem Characterizing solutions to CR Yamabe equation in Heisenberg group.
method Integral estimates combined with divergence formula.
result Liouville-type results for bounded solutions in n=2n=2 and solutions with pointwise decay assumption in n3n\ge3.

In this note we give geometric formulations and proofs of three results of S. Morita. These results relate certain two dimensional cohomology classes of various moduli spaces of curves. We also give a geometric interpretation of a fourth result of Morita. One motivation of this work is to facilitate the application of …

1998-10-08abs ↗pdf ↗

Study proves structure results for homogeneous spaces supporting specific equations.

problem Proving structure results for homogeneous spaces supporting specific equations.
method Analyzing homogeneous spaces with non-constant solutions to two general classes of equations involving the Hessian and an invariant 2-tensor.
result Generalizes rigidity results for gradient Ricci solitons and warped product Einstein metrics.

New rigidity results for specific hypersurfaces in spacetimes.

problem Characterizing maximal hypersurfaces in Generalized Robertson-Walker spacetimes.
method Applying rigidity results under geometric assumptions and the Null Energy Condition.
result New parametric uniqueness and nonexistence results for maximal hypersurfaces.

This article studies the nonabelian localization results of Beasley and Witten, and considers the analogue of these results when the gauge group is U(1). It compares these results with results of Manoliu on abelian Chern-Simons theory, showing that the dependence on the coupling constant is the same.

2009-03-29abs ↗pdf ↗

The paper surveys mathematical results on filtration enlargement with financial examples.

problem Mathematical finance applications of filtration enlargement theory.
method Exhaustive survey and interpretation of key results from literature.
result Provides a compendium of known mathematical results for mathematical finance researchers.

The paper studies rigidity results for harmonic forms on Kähler manifolds.

problem Understanding harmonic forms on Kähler manifolds.
method Analyzes rigidity results for harmonic (p,q)(p,q)-forms in complete Kähler manifolds.
result Shows several rigidity results and applications to non-compact Kähler manifolds.

LLE produces unwanted results without regularization, which can be prevented with regularization.

problem LLE's inherent unwanted results without regularization.
method Mathematical proof and numerical examples of regularization effectiveness.
result Regularization prevents unwanted results in LLE.

Paradan and Vergne generalised the quantisation commutes with reduction principle of Guillemin and Sternberg from symplectic to Spinc^c-manifolds. We extend their result to noncompact groups and manifolds. This leads to a result for cocompact actions, and a result for non-cocompact actions for reduction at zero. The r…

2014-08-01abs ↗pdf ↗

In this paper we show a quantitative rigidity result for the minimizer of the Willmore functional among all projective planes in Rn\mathbb{R}^n with n4n\ge 4. We also construct an explicit counterexample to a corresponding rigidity result in codimension one, by showing that an Enneper surface might split-off during a b…

2014-08-09abs ↗pdf ↗

Sharp concentration results for sums of heavy-tailed random variables.

problem Analyzing sums of independent heavy-tailed random variables.
method Using concentration inequalities and large deviation principles for distributions satisfying specific tail bounds.
result Sharp concentration inequalities and large deviation results for sums of heavy-tailed random variables.

In this article, we prove new stability results for almost-Einstein hypersurfaces of the Euclidean space, based on previous eigenvalue pinching results. Then, we deduce some comparable results for almost umbilical hypersurfaces.

2007-10-26abs ↗pdf ↗

Study complete manifolds with weighted Poincaré inequality and Ricci curvature bounds.

problem Understanding the structure of complete manifolds with specific curvature and inequality conditions.
method Analyzing manifolds with weighted Poincaré inequality and Ricci curvature bounds.
result Obtained splitting results for manifolds with non-zero weight function limit at infinity.

AxCell automates results extraction from machine learning papers.

problem Difficulty in tracking progress in machine learning due to many papers.
method AxCell uses table segmentation and learns structural knowledge to extract results.
result AxCell significantly improves results extraction compared to existing methods.

Negative results for neural network approximations on multi-dimensional spaces.

problem Approximating functions on compact subsets of R^d (d≥2) using neural networks.
method Proof of negative results for single and multi-layer feedforward neural networks with various activation functions.
result Existence of target functions difficult to approximate by these neural networks.

Study on Ricci-Bourguignon solitons and almost solitons, generalizing previous results.

problem Analyzing solitons and almost solitons in the context of Ricci-Bourguignon flow.
method Generalizing results for Ricci solitons and introducing Ricci-Bourguignon almost solitons, proving results and deriving integral formulas.
result Compact gradient Ricci-Bourguignon almost solitons with constant scalar curvature or conformal associated vector field are isometric to Euclidean spheres.

This paper contains some results about Teichmüller spaces of non-orientable surfaces (Klein surfaces). We prove several theorems giving isomorphisms between deformation spaces of Klein surfaces. These results show the similarity between the deformation theory of Klein surfaces, and the theory of Riemann surfaces. We al…

1995-07-21abs ↗pdf ↗

Over a compact Kähler manifold, we provide a Fredholm alternative result for the Lichnerowicz operator associated to a Kähler metric with conic singularities along a divisor. We deduce several existence results of constant scalar curvature Kähler metrics with conic singularities: existence result under small deformatio…

2017-03-18abs ↗pdf ↗

Proposes CRG_IMSC for better clustering of multi-view data.

problem Lack of effective connectivity in clustering results.
method Directly obtains clustering result with nonnegative constraint; constructs connectivity matrix based on spectral clustering result; uses multiplicative update algorithm.
result Improves clustering performance on benchmark datasets.

Study shows density of mapping classes on infinite-type surfaces using quasi-conformal maps.

problem Approximating mapping classes on infinite-type surfaces with quasi-conformal maps.
method Using hyperbolic structures and quasi-conformal homeomorphisms.
result Density of mapping classes on infinite-type surfaces can be achieved using quasi-conformal maps.

Paper proposes a method to aggregate customer engagement data for better ranking of e-commerce results.

problem Cold start problem and under-representation of new or under-impressed products in e-commerce search results.
method Aggregates customer engagements within a day for the same query as input training data for machine learning models.
result Training models on aggregated data leads to better ranking of new and under-impressed products.

The paper proves new results on Poincaré duality pairs and spaces.

problem Establishing Poincaré duality in various contexts and dimensions.
method Analyzes Poincaré spaces and CW pairs, proving relative Poincaré duality and related results.
result Found a finite CW pair (X,Y)(X,Y) where YY fails to satisfy Poincaré duality in any dimension.

Kawakubo and Uchida showed that, if a closed oriented 4k4k-dimensional manifold MM admits a semi-free circle action such that the dimension of the fixed point set is less than 2k2k, then the signature of MM vanishes. In this note, by using GG-signature theorem and the rigidity of the signature operator, we generaliz…

2010-12-07abs ↗pdf ↗

In this text we give a decomposition result on polynomial poly-vector fields generalizing a result on the decomposition of homogeneous Poisson structures. We discuss consequences of this decomposition result in particular for low dimensions and low degrees. We provide the tools to calculate simple cubic Poisson structu…

2004-09-09abs ↗pdf ↗