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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.

168,742 papers · 148 categories

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48 results for anisotropic convex bodies

Paper extends capillary convex body results to anisotropic setting with Alexandrov-Fenchel inequalities.

problem Extending capillary convex body results to anisotropic setting.
method Developed theory for anisotropic capillary convex bodies in half-space and established Alexandrov-Fenchel inequality for mixed volumes.
result Established a general Alexandrov-Fenchel inequality for mixed volumes of anisotropic capillary convex bodies, weakening and extending previous results.

New theorem proves convex bodies with specific curvature measures are rescaled Wulff shapes.

problem Characterizing convex bodies based on anisotropic curvature measures.
method Analyzing k-th anisotropic curvature measures and their relation to anisotropic perimeter.
result Arbitrary convex bodies with specific curvature measures are rescaled Wulff shapes.

The paper studies curvature measures and volume-preserving flows on convex bodies.

problem Characterizing and understanding convex bodies through anisotropic curvature measures.
method Developed anisotropic curvature measures, used Minkowski formulas and Heintze-Karcher inequalities, and analyzed volume-preserving flows.
result Characterized Wulff shapes via anisotropic curvature measures and proved convergence of volume-preserving flows.

Study anisotropic flow for capillary hypersurfaces, proving new inequalities.

problem Anisotropic capillary hypersurfaces and their properties.
method Anisotropic volume-preserving mean curvature flow, new approach for strictly convex initial hypersurfaces.
result Established new Alexandrov-Fenchel inequalities for strictly convex anisotropic capillary hypersurfaces.

Study anisotropic flows without global terms and solve dual Orlicz Christoffel-Minkowski problems.

problem Anisotropic flows without global forcing terms and dual Orlicz Christoffel-Minkowski problems.
method Existence results for dual Orlicz Christoffel-Minkowski type problems via stationary solutions of anisotropic flows.
result Existence results for a class of dual Orlicz Christoffel-Minkowski type problems.

The paper introduces a new flow to converge to a Wulff shape from a smooth convex hypersurface.

problem Proving Alexandrov-Fenchel inequalities for anisotropic mixed volumes.
method Introducing a fully nonlinear locally constrained anisotropic curvature flow.
result The flow converges smoothly and exponentially to a scaled Wulff shape.

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.

The paper proves a Wulff inequality for minimal submanifolds with boundary in Euclidean space.

problem Proving a Wulff inequality for minimal submanifolds with boundary.
method Associating a nonnegative anisotropic weight to the boundary of minimal submanifolds and proving the inequality.
result The Wulff inequality constant is independent of the weights and depends only on mm and nn.

Optimal inequality for free boundary hypersurfaces in convex domains.

problem Proving an optimal Heintze-Karcher inequality for free boundary hypersurfaces.
method Analyzing anisotropic free boundary hypersurfaces in convex domains.
result Optimal Heintze-Karcher-type inequality achieved for anisotropic free boundary Wulff shapes.

The paper studies a curve flow preserving anisotropic length for convex curves, leading to a homothetic limit.

problem Anisotropic length preservation in curve deformation.
method A curve flow that maintains anisotropic length, analyzed for convex closed curves.
result Convex curves evolve to homothetic limits of Wulff shapes as time approaches infinity.

Study optimizes perimeter in convex domains with anisotropic constraints.

problem Optimizing perimeter in convex domains with anisotropic constraints.
method Analytical properties, topological features, and geometric measure theory results.
result Sharp isoperimetric inequalities and existence of minimizers.

The paper proves inequalities for star-shaped and FF-mean convex hypersurfaces in Rn+1\mathbb{R}^{n+1}.

problem Proving geometric inequalities for specific types of hypersurfaces.
method Using anisotropic pp-momentum, perimeter, and volume, the paper derives inequalities for star-shaped and FF-mean convex hypersurfaces.
result The Wulff shape of FF is the unique minimizer of the corresponding functionals among all star-shaped and FF-mean convex sets.

We study the curve diffusion flow for closed curves immersed in the Minkowski plane M\mathcal{M}, which is equivalent to the Euclidean plane endowed with a closed, symmetric, convex curve called an indicatrix that scales the length of a vector in M\mathcal{M} depending on its length. The indiactrix $\partial\mathcal{…

2017-06-07abs ↗pdf ↗

Local minimizers are convex and close to Wulff shapes.

problem Finding local minimizers in anisotropic isoperimetric problems.
method Showed local minimizers are geodesically convex and small smooth perturbations of tangent Wulff shapes.
result Local minimizers are quantitatively close to Wulff shapes.

New illumination bodies defined for ball-convex shapes, proving convexity and establishing surface area measures.

problem Characterizing properties of ball-convex shapes.
method Introducing illumination bodies and weighted illumination bodies, proving convexity, and establishing surface area measures.
result Illumination bodies are convex and provide surface area measures for ball-convex shapes.

Study on Gauss map of anisotropic minimal surfaces with Morse index estimates.

problem Estimating the Morse index of anisotropic minimal surfaces.
method Local analysis of Gauss map, conformal geometric techniques applied to the Gauss map.
result Upper and lower estimates for the Morse index of anisotropic minimal surfaces.

The paper studies a flow of convex hypersurfaces using anisotropic curvature functions.

problem Deforming convex hypersurfaces in Euclidean space.
method Fully nonlinear curvature flow involving k-th elementary symmetric function and support function.
result Long-time existence and convergence of the flow under certain assumptions.

We introduce and study a new class of $\eps$-convex bodies (extending the class of convex bodies) in metric and normed linear spaces. We analyze relations between characteristic properties of convex bodies, demonstrate how $\eps$-convex bodies connect with some classical results of Convex Geometry, as Helly theorem, an…

2008-08-13abs ↗pdf ↗

New surface area measures defined for ball-convex bodies, leading to entropy and inequalities.

problem Defining and analyzing surface area measures for ball-convex bodies.
method Introducing LpL_p relative surface areas, proving invariance and inequalities, and using geometric interpretations.
result Established inequalities and a new notion of entropy for ball-convex bodies.

In this paper, we study the anisotropic Minkowski problem. It is a problem of prescribing the anisotropic Gauss-Kronecker curvature for a closed strongly convex hypersurface in Euclidean space as a function on its anisotropic normals in relative or Minkowski geometry. We first formulate such problem to a Monge-Ampére t…

2012-03-06abs ↗pdf ↗

Sharp bounds for anisotropic p-capacity of Euclidean compact sets derived using flow methods.

problem Sharp bounds for anisotropic p-capacity of Euclidean compact sets.
method Inverse anisotropic mean curvature flow (IAMCF) and anisotropic Hawking mass.
result Upper bounds for anisotropic p-capacity derived using flow methods.

For a convex body on the Euclidean unit sphere the spherical convex floating body is introduced. The asymptotic behavior of the volume difference of a spherical convex body and its spherical floating body is investigated. This gives rise to a new spherical area measure, the floating area. Remarkably, this floating area…

2014-11-27abs ↗pdf ↗

A Minkowski class is a closed subset of the space of convex bodies in Euclidean space Rn which is closed under Minkowski addition and non-negative dilatations. A convex body in Rn is universal if the expansion of its support function in spherical harmonics contains non-zero harmonics of all orders. If K is universal, t…

2012-07-31abs ↗pdf ↗

The Gauss curvature measure of a pointed Euclidean convex body is a measure on the unit sphere which extends the notion of Gauss curvature to non-smooth bodies. Alexandrov's problem consists in finding a convex body with given curvature measure. In Euclidean space, A.D. Alexandrov gave a necessary and sufficient condit…

2019-03-15abs ↗pdf ↗

The paper proves convex bodies are minimal fillings and have Lipschitz-volume rigidity.

problem Finding minimal fillings of convex bodies.
method Analyzing integral current spaces and proving rigidity properties.
result Convex bodies are the unique minimal fillings of their boundary metrics among integral current spaces and enjoy Lipschitz-volume rigidity.

The paper proves a theorem linking convex body centroids and category theory.

problem Understanding centroids of sections of convex bodies.
method Lusternik-Schnirelmann category theory.
result At least n hyperplanes exist such that the center of mass of their intersection with a convex body lies on the boundary of the convex body.

The paper finds the unique minimizer of area for hyperbolic bodies with curvature constraints.

problem Finding the unique minimizer of area for hyperbolic bodies with curvature constraints.
method Introduced the concept of 'thick λλ-sausage' bodies and used extra assumption of thickness to handle non-convex inner parallel bodies.
result The thick λλ-sausage body is the unique minimizer of area among all bodies with a given length and curvature constraints.

Study spherical convex bodies using LpL_p-floating areas and curvature entropy.

problem Analogous isoperimetric inequalities for spherical convex bodies.
method Introduced LpL_p-floating areas and curvature entropy for spherical convex bodies.
result Established isoperimetric inequalities and dual isoperimetric inequalities.

We determine the homeomorphism type of the hyperspace of positively curved CC^\infty convex bodies in Rn\mathbb R^n, and derive various properties of its quotient by the group of Euclidean isometries. We make a systematic study of hyperspaces of convex bodies that are at least C1C^1. We show how to destroy the symmetr…

2017-05-03abs ↗pdf ↗

Sharp stability results for reverse isoperimetric inequalities in 2D.

problem Reverse isoperimetric inequalities in the plane.
method Stability analysis of λ\lambda-convex bodies and convex bodies with smooth boundaries.
result Sharp stability results for reverse isoperimetric inequalities, including inradius and Cheeger inequalities.

Analytic convex bodies' Poincaré series extended holomorphically.

problem Analytic continuation of Poincaré series for convex bodies.
method Analytic continuation of Laplace transforms, holomorphic functions, and resolvent of multiplication operators.
result Poincaré series continues holomorphically to a conical neighborhood of the right half-plane, removing countable cuts and points.

This paper proves a curvature entropy inequality for non-symmetric convex bodies.

problem Proving a curvature entropy inequality for non-symmetric convex bodies.
method Demonstrated the log-Minkowski inequality of curvature entropy for general convex bodies in 2D.
result Equivalence of cone-volume measure uniqueness, log-Minkowski volume inequality, and curvature entropy inequality for general convex bodies in 2D.

The paper solves reverse isoperimetric problems for convex bodies with curvature constraints.

problem Finding the smallest volume among λλ-convex bodies of a given surface area.
method Using λλ-convex bodies and analyzing their properties in model spaces of constant curvature.
result The λλ-convex lens is the unique minimizer of volume among all λλ-convex bodies of given surface area in R3\mathbb{R}^3.

The study connects the average number of solutions to mixed volumes of convex bodies.

problem Finding a relationship between the average number of solutions to systems of equations and mixed volumes of convex bodies.
method Developed Banach metrics in vector spaces, constructed Banach convex bodies in the cotangent bundle of XX, and calculated the average number of solutions as the mixed symplectic volume of these bodies.
result The average number of solutions is equal to the mixed symplectic volume of Banach convex bodies.