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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.

169,051 papers · 148 categories

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12.5%25.0%37.5%50.0% · Sep 199319922001200920182026
48 results for Minkowski identities

We obtain isometric minimal helicoidal and rotational surfaces using generalized Bour's theorem in three dimensional Minkowski space. In addition, we show that the surfaces preserve minimality when their Gauss maps identically equal, choosing any diffentiable functions on the profile curve.

2015-02-19abs ↗pdf ↗

The paper shows how Scherk-type surfaces can be decomposed into helicoids.

problem Decomposing Scherk-type zero mean curvature surfaces.
method Using a special Euler-Ramanujan identity and Wick rotation, the paper expresses these surfaces as an infinite superposition of dilated helicoids and provides different finite decompositions.
result Scherk-type zero mean curvature surfaces can be expressed as an infinite superposition of dilated helicoids.

We discuss two different in general natural approaches to the ideal closure and ideal boundary of Busemann nonpositively curved metric space. It is shown that the identity map of the space admits surjective continuation from its coarse ideal closure to the weak one. We consider some situations when these closures coinc…

2004-05-07abs ↗pdf ↗

We prove effective uniformization for nearly round 2-spheres and investigate their stability.

problem Proving effective uniformization for nearly round 2-spheres and their stability.
method Utilizing an identity related to the third-order differential of the conformal factor, and an isometric embedding of a round sphere into Euclidean space using an orthogonal basis of the first eigenspace of the Laplacian operator.
result We provide a simplified proof of effective uniformization and its stability.

The paper proves rigidity theorems for space-like hypersurfaces in Minkowski space.

problem Stability and rigidity of space-like hypersurfaces in Minkowski space.
method Weinberger-type approach with P-functions and integral identities.
result Hypersurfaces with constant higher-order mean curvature ratios and specific boundary conditions are parts of hyperboloids.

Maximal surfaces in L3\mathbb{L}^3 correspond to timelike minimal surfaces.

problem Establishing a correspondence between maximal and timelike minimal surfaces in L3\mathbb{L}^3.
method Linear transformation between maximal surfaces and timelike minimal surfaces, preserving singularities and Gauss map.
result One-one correspondence and preservation of properties between maximal and timelike minimal surfaces.

Derives hyperbolic laws of cosines and sines with fermionic corrections.

problem Deriving hyperbolic laws of cosines and sines with new mathematical corrections.
method Using Minkowski supergeometry, the laws of cosines and sines are derived in the super hyperbolic plane.
result Identical formulae to classical cases with fermionic corrections for cosines and sines.

We study the problem of recovering a function on a pseudo-Riemannian manifold from its integrals over all null geodesics in three geometries: pseudo-Riemannian products of Riemannian manifolds, Minkowski spaces and tori. We give proofs of uniqueness anc characterize non-uniqueness in different settings. Reconstruction …

2016-08-10abs ↗pdf ↗

The paper solves a new Minkowski problem involving convex bodies and curvature measures.

problem Finding convex bodies with specific curvature measures.
method Solving Monge-Ampère type equations using variational and Gaussian curvature flow methods.
result Existence and uniqueness of solutions for the LpL_p-Gauss dual Minkowski problem.

We study the four-dimensional effective theory arising from ten-dimensional heterotic supergravity compactified on manifolds with torsion. In particular, given the heterotic superpotential appropriately corrected at O(α)\mathcal{O}(α') to account for the Green-Schwarz anomaly cancellation mechanism, we investigate proper…

2015-09-29abs ↗pdf ↗

The paper solves a generalized Christoffel-Minkowski problem using a curvature flow.

problem Solving the (p,q)-Christoffel-Minkowski problem.
method Investigating the problem via an expanding curvature flow.
result Existence and uniqueness of smooth solutions to the (p,q)-Christoffel-Minkowski problem.

Study anisotropic flows solving Orlicz-Minkowski problems, proving existence and new results.

problem Anisotropic non-homogeneous Gauss curvature flows and Orlicz-Minkowski problems.
method Long-time existence and behavior analysis, parabolic approximation method, curvature flow.
result Existence and new results for Orlicz-Minkowski problems, including LpL_p versions.

Researchers prove uniqueness and continuity of solution to L_p dual Minkowski problem.

problem Proving uniqueness and continuity of solution to L_p dual Minkowski problem.
method Established new Minkowski-type inequalities related to optimization problem.
result Uniqueness and continuity of solution for general convex bodies when q<pq < p.

New statistical Minkowski distances for Gaussian mixtures with closed-form formulas.

problem Computing distances for Gaussian mixture models efficiently.
method Proposed novel statistical distances based on Minkowski's inequality for Gaussian mixtures.
result Closed-form formula for Gaussian mixture models with integer exponents.

Proves global LpL_p-Brunn-Minkowski inequality for specific pp range.

problem Establishing global LpL_p-Brunn-Minkowski inequality for pp in a specific range.
method Using local uniqueness results for the LpL_p-Minkowski problem and Logarithmic Minkowski problem.
result Global LpL_p-Brunn-Minkowski inequality proven for p(1c/n32,1)p\in(1-c/n^{\frac{3}{2}},1).

Paper solves Minkowski problem for anisotropic p-torsional rigidity.

problem Solving the Minkowski problem for anisotropic p-torsional rigidity.
method Using the anisotropic pp-Laplacian equation, presenting sufficient and necessary conditions for existence.
result Presented sufficient and necessary conditions for the existence of a solution.

Characterizes Lorentzian manifolds embeddable in Minkowski spacetime.

problem Identifying Lorentzian manifolds embeddable in Minkowski spacetime.
method Characterization and proof of embeddability conditions.
result Lorentzian manifolds embeddable in Minkowski spacetime coincide with globally hyperbolic spacetimes.

Solves a discrete logarithmic Minkowski problem for electrostatic p-capacity.

problem Characterize measures generated by electrostatic p-capacity.
method Solves the discrete logarithmic Minkowski problem for 1 < p < n.
result Solves the discrete logarithmic Minkowski problem for measures in general position.

Study anisotropic inverse Gauss curvature flows and solve dual Orlicz Minkowski problems.

problem Solving dual Orlicz Minkowski problems for anisotropic flows.
method Anisotropic inverse Gauss curvature flows and stationary solutions.
result New existence results for dual Orlicz Minkowski problems for smooth measures.

Paper solves Minkowski problem for non-compact convex sets with asymptotic boundary conditions.

problem Solving Minkowski problem for non-compact convex sets with asymptotic boundary conditions.
method Combining covolume, Hadamard variational formula, and geometric interpretation.
result Solved Minkowski problem for non-compact convex sets under asymptotic conditions.

Researchers solved the even LpL^p-Minkowski problem under curvature pinching.

problem Solving the even LpL^p-Minkowski problem under curvature pinching.
method Anisotropic Riemannian metric comparison and anisotropic curvature analysis.
result The even LpL^p-Minkowski inequality and uniqueness are proven for all ppγp \geq p_γ.

Finsler space is differentiable manifold for which Minkowski space is the fiber of the tangent bundle. To understand structure of the reference frame in Finsler space, we need to understand the structure of orthonormal basis in Minkowski space. In this paper, we considered the definition of orthonormal basis in Minkows…

2012-01-19abs ↗pdf ↗

This paper solves the dual Minkowski problem for q-torsional rigidity.

problem The dual Minkowski problem for q-torsional rigidity.
method Introduced the p-th dual q-torsional measure and solved the p-th dual Minkowski problem for q-torsional rigidity using a Gauss curvature flow.
result Existence of smooth even and non-even solutions to the p-th dual Minkowski problem for q-torsional rigidity.

Study proves only origin-centered spheres solve certain curvature problems.

problem Proving uniqueness of solutions to curvature problems.
method Using the Heintze-Karcher inequality, the study proves the uniqueness of smooth, strictly convex solutions to a class of Minkowski type problems.
result Only origin-centered spheres solve isotropic and LpL_p-Gaussian-Minkowski problems.