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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 conical measures

Set-valued risk measures on LdpL^p_d with 0p0 \leq p \leq \infty for conical market models are defined, primal and dual representation results are given. The collection of initial endowments which allow to super-hedge a multivariate claim are shown to form the values of a set-valued sublinear (coherent) risk measure. Sc…

2010-11-27abs ↗pdf ↗

Study examines wave equation decay and Strichartz estimates on conic manifolds.

problem Analyzing wave equation behavior on conic spaces with critical electromagnetic potentials.
method Established decay and Strichartz estimates through localized spectral measure construction.
result Extended and improved previous results on wave equation behavior with critical potentials.

This paper introduces a new formulation of the Conic Gromov-Wasserstein distance for comparing complex network structures.

problem Comparing measures of unequal mass and complex network structures.
method Novel semi-coupling formulation and extension to hypernetworks.
result Establishes fundamental properties and robustness of CGW metric.

New formulations for comparing metric measure spaces with arbitrary positive measures.

problem Comparing metric measure spaces with arbitrary positive measures.
method Two novel formulations: a divergence and a conic lifting approach.
result Efficiently solvable formulations for comparing metric spaces with arbitrary positive measures.

Given a coassociative 4-fold N with a conical singularity in a varphi-closed 7-manifold M (a manifold endowed with a distinguished closed 3-form varphi), we construct a smooth family, {N'(t): t\in(0,tau)} for some tau>0, of (smooth, nonsingular,) compact coassociative 4-folds in M which converge to N in the sense of cu…

2006-11-07abs ↗pdf ↗

For a torsion free Kleinian group ΓΓ without parabolics, we consider the decomposition of the limit set L(Γ)L(Γ) into conical and ending limit sets and compare the Patterson-Sullivan measure with the harmonic measure on L(Γ)L(Γ) when L(Γ)=S2L(Γ)=S^2_\infty.

2012-09-18abs ↗pdf ↗

The study connects Hilbert entropy to non-differentiability points of limit sets in flag spaces.

problem Understanding non-differentiability points in limit sets of convex projective structures.
method Introduces hyperplane conicality for θθ-Anosov representations and uses it to prove properties of boundary maps.
result Hilbert entropy is linked to the Hausdorff dimension of non-differentiability points in flag spaces.

A new algorithm solves sparse optimization problems on measures efficiently.

problem Sparse optimization problems on measures.
method Over-parameterized Stochastic Gradient Descent with Random Features.
result Global convergence with rate O(log(K)/K)O(\log(K)/\sqrt{K}) and bounded total variation norms.

The purpose of this paper is to generalize the convexity of Mabuchi's functional to the conic setting. We first established a frame to study conic cscK metrics, and then the conic Mabuchi functional was introduced in such a way that conic cscK metrics are its critical points. Finally we proved the convexity of the coni…

2015-10-31abs ↗pdf ↗

The paper classifies isoparametric hypersurfaces in conic Finsler spaces.

problem Identifying new isoparametric hypersurfaces in conic Finsler spaces.
method Introduced isoparametric functions and hypersurfaces in conic Finsler spaces, classified them in specific spaces.
result Found additional isoparametric hypersurfaces in conic Minkowski spaces, such as helicoids.

Proves existence of Yamabe metrics on conical manifolds with conical points and links.

problem Existence of Yamabe metrics on singular manifolds with conical points and links.
method Derives a counterpart of Aubin's result, uses conical links and Fourier analysis, adds lower-order correction to standard bubbles.
result Derives asymptotic expansions on the Yamabe quotient for generic type metrics.

Proves conditions for positive scalar curvature on certain manifolds with conical singularities.

problem Conditions for positive scalar curvature on manifolds with isolated conical singularities.
method Analyzes isolated conical singularities and uses Geroch type results.
result No metric with positive scalar curvature on X#TnX \# T^n with isolated conical singularity.

Paper identifies conditions for singularity removal in equations with conical singularities.

problem Removability of singularities in equations with conical singularities.
method Identification of the Pohozaev constant to measure failure of Pohozaev identity.
result Vanishing Pohozaev constant is necessary and sufficient for singularity removal.

Study on spherical conical metrics and their reducibility on compact Riemann surfaces.

problem Existence and geometric structure of reducible spherical conical metrics.
method Analysis of monodromy groups and geometric cutting of surfaces.
result Existence of reducible spherical conical metrics with saddle points on the same geodesic.

In this paper we develop a systematic deformation theory for conic constant curvature metrics on a closed surface when all cone angles are less than 2π; in particular, we define and study the Teichmüller space Tγ,kconic\mathcal{T}^{\mathrm{conic}}_{γ,k} of conic constant curvature metrics on a surface of genus γγ with kk

2015-09-25abs ↗pdf ↗

Study finds conditions for conformal deformations to constant scalar curvature in conic metrics.

problem Finding conditions for conformal deformations to constant scalar curvature in conic metrics.
method Analyzes conformal deformations within a class of incomplete Riemannian metrics that generalize conic orbifold singularities.
result Determines sufficient conditions for the existence of a conformal deformation to a conic metric with constant scalar curvature -1.

We establish a parabolic version of Tian's C2,αC^{2,α}-estimate for conical complex Monge-Ampere equations, which includes conical Kähler-Einstein metrics. Our estimate will complete the proof of the existence of unnormalized conical Kähler-Ricci flow in arXiv:1411.7284.

2014-12-08abs ↗pdf ↗

We prove that the conical Kähler-Ricci flows introduced in \cite{CYW} exist for all time t[0,+)t\in [0,+\infty). These immortal flows possess maximal regularity in the conical category. As an application, we show if the twisted first Chern class C1,βC_{1,β} is negative or zero, the corresponding conical Kähler-Ricci flows co…

2014-02-26abs ↗pdf ↗

We study metrics on conic 2-spheres when no Einstein metrics exist. In particular, when the curvature of a conic metric is positive, we obtain the best curvature pinching constant. We also show that when this best pinching constant is approached, the conic 2-sphere has an explicit Gromov-Hausdorff limit. This is a gene…

2015-06-19abs ↗pdf ↗

The paper discusses a twisted conical Kähler-Ricci flow and its convergence properties.

problem Diameter bound and Gromov-Hausdorff convergence of a twisted conical Kähler-Ricci flow.
method Direct arguments on the conical equation without smooth approximation.
result The conical Kähler-Ricci flow will instantly have bounded scalar curvature for t>0t>0.

Study conical Ricci flow on surfaces with explicit asymptotic expansions.

problem Analyzing Ricci flow on conical surfaces with explicit regularity.
method Established framework for linear parabolic equations on conical surfaces; proved long-time existence and optimal regularity of conical Ricci flow.
result Explicit asymptotic expansions of conformal factor for conical Ricci flow.

The study proves convergence of conic 4-spheres' geometry to boundary cases.

problem Convergence of conic 4-spheres' geometry to boundary cases.
method Proved a convergence theorem on the moduli space of constant σ₂ metrics for conic 4-spheres.
result When a numerical condition converges to the boundary case, conic 4-spheres' geometry converges to the boundary case while preserving capacity.

Conic singular sub-manifolds are Lipschitz Normally Embedded in compact non-Euclidean manifolds.

problem Understanding the Lipschitz geometry of conic singular sub-manifolds.
method Analyzing the metric properties of conic singular sub-manifolds in compact non-Euclidean manifolds.
result Connected conic singular sub-manifolds are Lipschitz Normally Embedded.

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.

Constructs surfaces with conical singularities using variational methods.

problem Creating Hamiltonian Stationary Surfaces with specific singularities.
method Variational methods and convergence process similar to Ginzburg-Landau analysis.
result Obtained surfaces with prescribed conical singularities related to optimal Wente constants.

Study shows scalar curvature rate for conical Kähler-Ricci flow near singularity.

problem Behavior of scalar curvature near finite time singularities in conical Kähler-Ricci flow.
method Investigated normalized conical Kähler-Ricci flow with finite maximal existence time, proving scalar curvature bounded by C/(Tt)2C/(T-t)^2.
result Scalar curvature of ωtω_t is bounded by C/(Tt)2C/(T-t)^2 under a contraction associated with limiting cohomology class [ωT][ω_T].

Generically, topological insulators have conical points leading to Dirac-like currents.

problem Understanding the conical structure of degeneracies in topological phases of matter.
method Analyzing Hermitian matrices with three parameters to show conical points.
result Adiabatic deformations of topological insulators result in Dirac-like currents whose total conductivity equals the chiral number of conical points.