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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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55111166221 · May 202619922001200920182026
48 results for non-properly embedded surfaces

In this paper, we show that there are non-properly embedded minimal surfaces with finite topology in a simply connected Riemannian 3-manifold with nonpositive curvature. We show this result by constructing a non-properly embedded minimal plane in hyperbolic 3-space. Hence, this gives a counterexample to Calabi-Yau conj…

2011-01-20abs ↗pdf ↗

We study the isometry group of a globally hyperbolic spatially compact Lorentz surface. Such a group acts on the circle, and we show that when the isometry group acts non properly, the subgroups of Diff(S1)\mathrm{Diff}(\mathbb{S}^1) obtained are semi conjugate to subgroups of finite covers of PSL(2,R)\mathrm{PSL}(2,\mathbb{R}) by…

2014-02-28abs ↗pdf ↗

Abstract: Proves generic torus diffeomorphisms act parabolically and non-properly on fine curve graph and have generalized rotation sets.

problem Generic torus diffeomorphisms on fine curve graph.
method Proves generic torus diffeomorphisms act parabolically and non-properly on fine curve graph.
result Generic torus diffeomorphisms have generalized rotation sets of any point-symmetric compact convex homothety type.

Schoen-Webster theorem asserts a pseudoconvex CR manifold whose automorphism group acts non properly is either the standard sphere or the Heisenberg space. The purpose of this paper is to survey successive works around this result and then provide a short geometric proof in the compact case.

2007-09-13abs ↗pdf ↗

The study examines closed manifolds with ray nil-affine structures and their completeness.

problem Characterizing closed manifolds with ray nil-affine structures.
method Analyzing properties of nilpotent spaces and flag manifolds, applying rank conditions and automorphism group actions.
result Closed manifolds are either complete or their developing map is a cover onto the complement of a nil-affine subspace.

Study on embedding surfaces into 3-manifolds, focusing on equivariant cases.

problem Embedding hyperbolic surfaces into hyperbolic 3-manifolds with specific symmetries.
method Examined orientation-preserving and orientation-reversing actions on surfaces, including nonorientable ones.
result Found conditions for equivariant embeddings of hyperbolic surfaces into hyperbolic 3-manifolds.

The study embeds graphs on translation surfaces, proving essential-systolic embeddings and estimating surface genera.

problem Embedding graphs on translation surfaces with specific properties.
method Proving essential-systolic embeddings and estimating surface genera.
result Finite graphs admit essential-systolic embeddings on translation surfaces with estimated genera.

New embedded periodic surfaces constructed in n-dimensional space.

problem Constructing new types of minimal surfaces in higher dimensions.
method Starting with a Jordan curve, a Plateau minimal disk is formed and extended using Schwarz reflections to create an embedded surface.
result Characterization of Jordan curves that generate embedded surfaces in n-dimensional space.

Discrete maximal surfaces identified from s-embeddings.

problem Understanding the conformal invariance of the Ising model.
method Introduced a special class of isothermic s-embeddings that correspond to discrete S-maximal surfaces.
result Each S-maximal surface comes with a 1-parameter family of associated surfaces that are isometric.

This paper answers a question about discrete embeddings to maximal surfaces.

problem The question of whether discrete embeddings lift to maximal surfaces.
method Introduced a correspondence between s-embeddings and congruences of touching Lorentz spheres, identified isothermic s-embeddings that lift to S-isothermic surfaces.
result Isothermic s-embeddings lift to S-isothermic surfaces, which are key for obtaining discrete maximal surfaces.

given two minimal surfaces embedded in §3\S3 of genus gg we prove the existence of a sequence of non-congruent compact minimal surfaces embedded in §3\S3 of genus gg that converges in C2,αC^{2,α} to a compact embedded minimal surface provided some conditions are satisfied. These conditions also imply that, if any of th…

2009-12-30abs ↗pdf ↗

Geodesic surfaces embed into hyperbolic 3-manifolds for all finite group actions.

problem Embedding geodesic surfaces into hyperbolic 3-manifolds.
method Analyzing finite group actions on surfaces and proving geodesic embeddings for all irreducible cases.
result All quasiplatonic surfaces embed geodesically into hyperbolic 3-manifolds.

Non-positively curved surfaces can be embedded in flat spacetime.

problem Embedding surfaces with non-positive curvature in flat spacetime.
method Polyhedral approximation to prove isometric embedding.
result Metric of non-positive curvature can be embedded as a convex spacelike Cauchy surface.

Essential embeddings of metric graphs on hyperbolic surfaces are constructed and studied.

problem Embedding metric graphs on hyperbolic surfaces with negative Euler characteristic.
method Construction of essential embeddings and study of minimal embeddings.
result Formula to compute essential genus and method for explicit essential embedding.

For leveled spatial graphs, we find a surface embedding that allows cellular embedding.

problem Finding a surface embedding for general spatial graphs is not always possible.
method Define leveled property, decompose graph into subgraphs, and construct surface.
result For leveled spatial graphs with a small number of levels, a surface can always be found.

Classifies surfaces in Euclidean space with specific curvature relations.

problem Classifying surfaces with linear curvature relations.
method Variational characterization of surfaces through their generating curve.
result Closed, embedded, and periodic surfaces with Delaunay-like behavior.

Embedded surfaces in a ball have any genus and connected boundary.

problem Existence of embedded free boundary minimal surfaces with specific properties.
method Min-max techniques applied to the unit ball in R3\mathbb{R}^3.
result Existence of embedded free boundary minimal surfaces with connected boundary and arbitrary genus.

The paper proves an adjunction inequality for Real embedded surfaces in 4-manifolds.

problem Understanding the genus of Real embedded surfaces in 4-manifolds.
method Using equivariant cohomology and Real Seiberg-Witten invariants.
result Minimal genus of Real embedded surfaces can be larger than that of arbitrary embedded surfaces.

Constructs a family of genus three minimal surfaces with parallel ends.

problem Creating embedded doubly periodic minimal surfaces with specific topological properties.
method Constructs a one-parameter family of surfaces with given Weierstrass data and solves the period problem.
result Solves the two dimensional period problem for the constructed surfaces.

Defines new gradings on Khovanov homology for surface embeddings.

problem Invariants of surfaces embedded in thickened 3-manifolds.
method Defines additional gradings on Khovanov homology and uses cohomological and homotopic information of surfaces.
result Picture-valued invariants of surfaces embedded in thickened 3-manifolds.

The article discusses how to create a special type of triangle mesh for surfaces in 3D space.

problem Creating a special type of triangle mesh for surfaces in 3D space.
method Using sufficient conditions and the diagonal switch algorithm to find an embedded Delaunay triangulation.
result The diagonal switch algorithm can find an embedded Delaunay triangulation for a point cloud on an embedded surface in R3\mathbb{R}^3.

Embedded minimal surfaces of finite total curvature in R3\mathbb{R}^3 are reasonably well understood: From far away, they look like intersecting catenoids and planes, suitably desingularized. We consider the larger class of harmonic embeddings in R3\mathbb{R}^{3} of compact Riemann surfaces with finitely many punctures…

2014-07-10abs ↗pdf ↗

We prove there exists a compact embedded minimal surface in a complete finite volume hyperbolic 33-manifold N\mathcal{N}. We also obtain a least area, incompressible, properly embedded, finite topology, 22-sided surface. We prove a properly embedded minimal surface of bounded curvature has finite topology. This dete…

2014-05-06abs ↗pdf ↗

We prove prove a bridge principle at infinity for area-minimizing surfaces in the hyperbolic space H3\mathbb{H}^3, and we use it to prove that any open, connected, orientable surface can be properly embedded in H3\mathbb{H}^3 as an area-minimizing surface. Moreover, the embedding can be constructed in such a way that t…

2013-02-21abs ↗pdf ↗