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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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66131197262 · Jun 202019922001200920172026
48 results for weak type $(1

The paper defines a new equivalence relation for knot projections and finds an infinite number of distinct classes.

problem Classifying knot projections based on weak homotopy equivalence.
method Defining weak (1, 2, 3) homotopy and using it to find an invariant.
result There are an infinite number of weak (1, 2, 3) homotopy equivalence classes of knot projections.

Study on a new type of manifolds that generalize almost C-manifolds.

problem Understanding weak nearly C-manifolds and their properties.
method Analyzing conditions for local Riemannian product structures and characterizing specific dimensions.
result Conditions for a weak nearly C-manifold to become locally a Riemannian product and characterization of specific dimensions.

Motivated by the usefulness of boundaries in the study of hyperbolic and CAT(0) groups, Bestvina introduced a general approach to group boundaries via the notion of a Z-structure on a group G. Several variations on Z-structures have been studied and existence results have been obtained for some very specific classes of…

2013-02-15abs ↗pdf ↗

Study weak ff-K-contact manifolds, finding Einstein-type metrics and solitons.

problem Characterize and study geometric properties of weak ff-K-contact manifolds.
method Analyzing weak metric ff-structures, using Killing vector fields, and Jacobi operators.
result Einstein weak ff-K-contact manifolds are Ricci flat.

The study examines conditions for weak nearly cosymplectic manifolds to split into products.

problem Understanding the curvature and topology of weak nearly cosymplectic manifolds.
method Analyzes the conditions for splitting and characterizes specific manifolds.
result Conditions for weak nearly cosymplectic manifolds to become Riemannian products are identified.

Study validates Michor-Mumford conjecture in infinite dimensional Hilbertian H-type groups.

problem Validation of Michor-Mumford conjecture in infinite dimensional Hilbertian H-type groups.
method Introduced infinite dimensional Hilbertian H-type groups with weak, graded, left invariant Riemannian metrics and proved the vanishing of geodesic distance and local unboundedness of sectional curvature.
result Validation of Michor-Mumford conjecture linking geodesic distance vanishing to local unboundedness of sectional curvature.

Researchers extend period maps for Calabi-Yau types using modified Kato-Nakayama-Usui construction.

problem Existence of weak fans for non-classical period maps of weight 3 Calabi-Yau type.
method Modified Kato-Nakayama-Usui construction for period maps of weight 3 Calabi-Yau type.
result Existence of weak fans for a large class of period maps of weight 3 Calabi-Yau type.

Study proves existence of weak mean curvature flow with contact angle.

problem Existence of weak mean curvature flow with prescribed contact angle.
method Compactness theorem for varifolds and Ilmanen's regularization extended to capillarity.
result Existence of weak mean curvature flow with contact angle for general θθ.

Study approximates weak error for specific stochastic models with rough and Gaussian mean-reverting volatility.

problem Approximating weak error for specific stochastic models with rough and Gaussian mean-reverting volatility.
method Used Euler type scheme with integrated kernels to study weak convergence rate.
result Obtained weak convergence rate of min(3α1,1)\min(3α-1,1) for discretised rough Ornstein-Uhlenbeck process and stochastic rough volatility model.

Develops Poisson structures on weak Sobolev loop spaces for integrable systems.

problem Analyzing integrable systems on low regularity loop spaces.
method Extending Mokhov's constructions to weak Sobolev spaces, constructing presymplectic and Poisson structures.
result Valid Poisson structures and deformations for weak Sobolev loops, extending Hamiltonian formalisms.

Paper introduces methods for more reliable probabilistic predictions with confidence intervals.

problem Inaccurate labeling of datasets due to unreliable probabilistic predictions from weak labeling functions.
method Proposes a methodology to provide confidence intervals for label probabilities using uncertainty sets of distributions.
result Improves reliability of probabilistic predictions and provides confidence intervals for label probabilities.

We detail the construction of a weak Poisson bracket over a submanifold of a smooth manifold M with respect to a local foliation of this submanifold. Such a bracket satisfies a weak type Jacobi identity but may be viewed as a usual Poisson bracket on the space of leaves of the foliation. We then lift this weak Poisson …

2015-11-18abs ↗pdf ↗

The paper finds the Finsler structure of Apollonian weak metric on unit disc.

problem Understanding the Finsler structure of Apollonian weak metric on the unit disc.
method Analyzing the deformation of hyperbolic Poincaré metric by a closed 1-form.
result The Apollonian weak-Finsler structure has bounded below SS-curvature and flag curvature KK satisfying <K<1-\infty < K < -1.

The study examines different types of equilibria for stopping problems in one-dimensional diffusion processes.

problem Characterizing and comparing different types of equilibria for time-inconsistent stopping problems.
method Analyzes log sub-additive discount functions and one-dimensional diffusion processes to derive necessary and sufficient conditions for weak equilibria and other types of equilibria.
result Conditions for weak equilibria and their implications for other types of equilibria are provided.

Bayesian priors improve neural network performance on weak signals.

problem Challenges in encoding domain knowledge for weak signals in neural networks.
method Proposed a new joint prior over local scale parameters for feature sparsity and signal-to-noise ratio, optimized with Stein gradient.
result Improved prediction accuracy on various datasets, including genetics applications with weak and sparse signals.

Atiyah classes of DG manifolds of positive amplitude are invariant under weak equivalences.

problem Defining and studying Hochschild cohomology of DG manifolds of positive amplitude.
method Using poly-differential operators and derived intersection, proving invariance under weak equivalences.
result Hochschild cohomology of DG manifolds of positive amplitude is invariant under weak equivalences.

Study the spaces of flat connections for classical Lie groups using Chern-Weil theory.

problem Understanding the weak homotopy type of spaces of flat connections for classical Lie groups.
method Use Chern-Weil theory and relate to the functorial map involving continuous families of representations.
result Relate the spaces of flat connections to the weak homotopy type of the spaces of representations.

Regression problems assume every instance is annotated (labeled) with a real value, a form of annotation we call \emph{strong guidance}. In order for these annotations to be accurate, they must be the result of a precise experiment or measurement. However, in some cases additional \emph{weak guidance} might be given by…

2018-04-01abs ↗pdf ↗

In this paper, we study general (α,β)(α,β)-metrics which αα is a Riemannian metric and ββ is an one-form. We have proven that every weak Landsberg general (α,β)(α,β)-metric is a Berwald metric, where ββ is a closed and conformal one-form. This show that there exist no generalized unicorn metric in this class of general $(…

2017-06-13abs ↗pdf ↗

The paper defines new homotopy relations on knot projections and classifies certain knot types.

problem Defining and classifying knot homotopy relations.
method Introducing cross chord numbers and using them to define strong and weak (1, 3) homotopies.
result Complete classification of knot projections with trivializing number two.

The paper gives the complete characterization of all graded nilpotent Lie algebras with infinite-dimensional Tanaka prolongation as extensions of graded nilpotent Lie algebras of lower dimension by means of a commutative ideal. We introduce a notion of weak characteristics of a vector distribution and prove that if a b…

2010-01-03abs ↗pdf ↗

W2S FT often outperforms weak teachers due to low intrinsic dimensionality.

problem Understanding why weak-to-strong finetuning outperforms weak models.
method Analyzing W2S in ridgeless regression setting, focusing on variance reduction.
result Weak teacher's variance is inherited by strong student in shared feature subspace, reduced in discrepancy subspace.

We determine an explicit presentation by generators and relations of the cohomology algebra H(P2C,C)H^*(\mathbb P^2\setminus C,\mathbb C) of the complement to an algebraic curve CC in the complex projective plane P2\mathbb P^2, via the study of log-resolution logarithmic forms on P2\mathbb P^2. As a first consequence, we de…

2007-11-13abs ↗pdf ↗

The problem of prescribing conformally the scalar curvature of a closed Riemannian manifold as a given Morse function reduces to solving an elliptic partial differential equation with critical Sobolev exponent. Two ways of attacking this problem consist in subcritical approximations or negative pseudo gradient flows. W…

2019-01-18abs ↗pdf ↗

Long time existence and convergence to a circle is proved for radial graph solutions to a mean curvature type curve flow in warped product surfaces (under a weak assumption on the warp potential of the surface). This curvature flow preserves the area enclosed by the evolving curve, and this fact is used to prove a gene…

2016-10-19abs ↗pdf ↗

Proves smoothness and star-shapedness of weak IMCF solutions in hyperbolic space.

problem Analyzing weak inverse mean curvature flow in hyperbolic space.
method Inspired by Alexandrov reflection method, uses Li-Wei result.
result Proves expanding spheres as the only proper weak IMCF on hyperbolic space.