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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.

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48 results for half-spaces

Paper classifies critical points in half-space with new distance function.

problem Classifying critical points in half-space with capillary CMC hypersurfaces.
method New shifted distance function for capillary problem in half-space.
result Proves Alexandrov-type theorem for singular capillary CMC hypersurfaces.

Study proves no minimal surfaces can be contained in certain half-spaces or cones.

problem Prohibiting minimal surfaces from certain geometric configurations.
method Analyzes weighted minimal surfaces in R3\mathbb{R}^3 with height-dependent weights.
result No proper surfaces can be contained in specific half-spaces or cones.

Study on minimal surfaces with free boundary in a half-space, improving index estimates.

problem Non-existence of index two embedded minimal surfaces with free boundary in a half-space.
method Improved estimates of Neumann and Dirichlet indices, simplified proof of lower bounds.
result Answered Ambrozio et al.'s question and provided new lower bounds.

Paper solves inequalities for capillary hypersurfaces in half-spaces.

problem Finding inequalities for convex capillary hypersurfaces in half-spaces.
method Introduced quermassintegrals and constructed a new locally constrained curvature flow to prove convergence to spherical caps.
result Obtained Alexandrov-Fenchel inequalities for convex capillary hypersurfaces.

Paper analyzes iterative learning for concept classes and learns half-spaces.

problem Learning concept classes efficiently with iterative learners.
method Analyzes various settings of iterative learning and provides a constructive algorithm for half-spaces.
result Constructive iterative algorithm for learning half-spaces from informant.

The paper classifies solutions to a Liouville equation on a half-space with a specific boundary condition.

problem Classifying solutions to a Liouville equation with a nonlinear Neumann boundary condition.
method Analyzing the nn-Laplacian Liouville equation on the half-space R+n\mathbb{R}^{n}_{+} with positive nonlinear Neumann boundary condition.
result The classification of solutions extends previous results for n=2n=2 and p=np=n.

The paper proves inequalities for convex capillary hypersurfaces in a half-space.

problem Proving inequalities for convex capillary hypersurfaces in a half-space.
method Locally constrained inverse curvature flow with spherical cap convergence.
result Proves a complete family of Alexandrov-Fenchel inequalities for convex capillary hypersurfaces.

Inverse metric matrices on Siegel-Jacobi spaces are calculated for Berezin quantization.

problem Calculating inverse metric matrices on Siegel-Jacobi spaces.
method Inversion of metric matrices on XnJ{\mathcal{X}}^J_n and ildeXnJ ilde{\mathcal{X}}^J_n.
result Explicit calculations of inverse metric matrices for n=2n=2.

Solves Christoffel-Minkowski problem for capillary convex bodies in Euclidean half-space.

problem Finding capillary convex bodies with prescribed kk-th capillary area measure.
method Solving a Hessian-type equation with Robin boundary condition.
result Existence and uniqueness of a smooth solution under natural conditions.

A 3D catenoid in 4D space is a minimal hypersurface that cannot be extended to a higher-dimensional half-space.

problem Extending the half-space theorem to higher dimensions in R4\mathbb{R}^4.
method Analyzing the topological constraints on minimal hypersurfaces in R4\mathbb{R}^4.
result A complete, properly embedded minimal hypersurface in a slab in R4\mathbb{R}^4 must be a hyperplane.

Develops a method to prove Penrose inequality for half-spaces.

problem Proving the Riemannian Penrose inequality for asymptotically flat half-spaces.
method Doubling procedure for asymptotically flat half-spaces with non-negative scalar curvature and mean-convex boundary.
result Obtains the Penrose-type inequality for dimensions 3 to 7.

Study classifies solutions to specific equations on half-space and ball.

problem Classifying nonnegative solutions to QQ-flat and constant TT-curvature equations.
method Introduced a biharmonic Poisson kernel and derived its explicit representation formula.
result Established classification theorems for solutions on R+n+1\mathbb{R}_+^{n+1} and Bn+1\mathbb{B}^{n+1}.

The paper proves nonexistence results for translating solitons in r-mean curvature flow.

problem Proving nonexistence of translating solitons in r-mean curvature flow.
method Establishing nonexistence results under suitable growth conditions on curvature and second fundamental form.
result Properly immersed translating solitons cannot be confined to certain half-spaces.

New geometry based on Siegel upper half-space with volume formula.

problem Developing a new 3D geometry based on Siegel upper half-space.
method Constructing a geometry fibered over Siegel upper half-space and providing a volume formula.
result Volume of Siegel-Seifert closed manifolds is the fiber circle length times base manifold's Euler characteristic.

The paper constructs homotopically non-trivial spheres in complexified spaces.

problem Embedding spheres in complexified spaces defined by hyperplane arrangements.
method Introducing locally consistent systems of half-spaces, embedding a sphere, and computing twisted intersection numbers.
result The constructed sphere is homotopically non-trivial if the half-space system is globally consistent.

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.

The paper explores properties of 1-surfaces in hyperbolic space and proves strong half-space theorems.

problem Investigating properties of 1-surfaces in Riemannian manifolds with specific curvature bounds.
method Analyzes the intersection problem for 1-surfaces with bounded curvature in a complete Riemannian three-manifold with Ricci curvature bounded from below.
result Strong half-space theorems for complete 1-surfaces in hyperbolic space with bounded curvature.

The study proves that certain minimal hypersurfaces in 4D space must be planes.

problem The extension of the half-space theorem to higher dimensions is obstructed.
method Analyzes topological properties of minimal hypersurfaces in R4\R^4.
result Complete, properly embedded minimal hypersurfaces in R4\R^4 with bounded curvature and diffeomorphic to R3\R^3 must be planes.

We prove a half-space theorem for an ideal Scherk graph ΣM×RΣ\subset M\times\mathbb R over a polygonal domain DM,D\subset M, where MM is a Hadamard surface whose curvature is bounded above by a negative constant. More precisely, we show that a properly immersed minimal surface contained in D×RD\times\mathbb R and disjoint…

2013-06-26abs ↗pdf ↗

Proves existence of smooth convex solutions to capillary curvature equations.

problem Proving existence of smooth convex solutions to capillary curvature equations.
method Gradient estimate for capillary curvature equations in half-space.
result Existence of even, smooth, strictly convex solutions for all 1<p<k+11<p<k+1 and θ(0,π/2)θ\in(0,π/2).

We study stable immersed capillary hypersurfaces in a domain B\mathcal B which is either a half-space or a slab in the Euclidean space Rn+1.\Bbb R^{n+1}. We prove that such a hypersurface ΣΣ is rotationally symmetric in the following cases: (1) n=2n=2, B\mathcal B is a slab and ΣΣ has genus zero, (2) n2n\geq 2, $\mathc…

2014-11-16abs ↗pdf ↗

We study the embedded Calabi-Yau problem for complete embedded constant mean curvature surfaces of finite topology or of positive injectivity radius in a simply-connected three-dimensional Lie group X endowed with a left-invariant Riemannian metric. We first prove a half-space theorem for constant mean curvature surfac…

2010-12-09abs ↗pdf ↗

Improved estimation of concentration using half-spaces for adversarial vulnerability.

problem Understanding the concentration of measure phenomenon and its impact on adversarial vulnerability.
method Extending Gaussian Isoperimetric Inequality to non-spherical Gaussian measures and arbitrary ℓ_p-norms, using half-spaces to estimate concentration.
result Proposed method finds tighter intrinsic robustness bounds, providing evidence against concentration as a cause of adversarial vulnerability.