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…
New surfaces in 3D space with constant curvature.
problem Constructing surfaces with constant curvature in a specific space.
method Created surfaces with constant mean curvature H in H^2xR.
result Successfully constructed non-properly embedded surfaces.
For any H in [0,1), we construct complete, non-proper, stable, simply-connected surfaces with constant mean curvature H embedded in hyperbolic 3-space.
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) obtained are semi conjugate to subgroups of finite covers of PSL(2,R) by…
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.
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 closed manifolds with rank one ray structures, proving completeness or covering properties.
problem Characterize closed manifolds with specific affine structures.
method Analyze the developing map and automorphism group properties.
result Closed manifolds with rank one ray structures are either complete or cover the complement of an affine subspace.
Embedding calculus proves convergence for surfaces.
problem Proving convergence of embedding calculus for surfaces.
method Goodwillie-Weiss' embedding calculus for spaces of embeddings into a manifold of dimension at most two.
result Relates Johnson filtration of mapping class group to embedding calculus.
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.
Maximizes symmetry of surfaces embedded in 3D space.
problem Finding surfaces with maximum symmetry in 3D space.
method Analyzing finite group actions on surfaces with given genus.
result Identifies surfaces with maximum symmetry and provides embeddings.
given two minimal surfaces embedded in §3 of genus g we prove the existence of a sequence of non-congruent compact minimal surfaces embedded in §3 of genus g that converges in C2,α to a compact embedded minimal surface provided some conditions are satisfied. These conditions also imply that, if any of th…
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.
A surface in the 4-sphere is trivially embedded, if it bounds a 3-dimensional handle body in the 4-sphere. For a surface trivially embedded in the 4-sphere, a diffeomorphism over this surface is extensible if and only if this preserves the Rokhlin quadratic form of this embedded surface.
Proves open Riemann surfaces can be embedded into 4D space.
problem Embedding open Riemann surfaces in lower dimensions.
method Proper harmonic embedding by harmonic functions.
result Reduces embedding dimension from previously known 5D to 4D.
In 1841, Delaunay constructed the embedded surfaces of revolution with constant mean curvature (CMC); these unduloids have genus zero and are now known to be the only embedded CMC surfaces with two ends and finite genus. Here, we construct the complete family of embedded CMC surfaces with three ends and genus zero; the…
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.
Proves surface embedding theorem for 4-manifolds with good fundamental group.
problem Surface embedding in 4-manifolds with good fundamental group.
method Introduces dual spheres and Kervaire-Milnor invariant for computation.
result Combinatorial formula for Kervaire-Milnor invariant.
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.
Study proves only embedded free boundary surface in a ball is critical catenoid.
problem Characterizing embedded free boundary surfaces in a ball.
method Proof of uniqueness for surfaces with specific properties.
result Only embedded free boundary surface in a ball is the critical catenoid.
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.
For a non-orientable closed surface standardly embedded in the 4-sphere, a diffeomorphism over this surface is extendable if and only if this diffeomorphism preserves the Guillou-Marin quadratic form of this embedded surface.
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. 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.
Algorithm calculates genus of embedded graphs on surfaces.
problem Finding minimal and maximal genus for graph embeddings.
method Constructing special branched coverings of the 2-sphere.
result Algorithm calculates orientable genus and maximal genus of graphs.
Study extends surface embedding theorems to non-orientable cases.
problem Embedding non-orientable surfaces in 4-manifolds.
method Conditions for embedding non-orientable surfaces as sums of surfaces and projective planes.
result Extends Gabai and Auckly-Kim-Melvin-Ruberman-Schwartz theorems to non-orientable surfaces.
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. We show that many 3-manifold groups have no nonabelian surface subgroups. For example, any link of an isolated complex surface singularity has this property. In fact, we determine the exact class of closed graph-manifolds which have no immersed pi_1-injective surface of negative Euler characteristic. We also determine …
Survey article on multibranched surfaces in 3-manifolds.
problem Embedding multibranched surfaces into 3-manifolds.
method Survey and review of existing methods.
result Overview of current research and techniques.
Embeddings preserve stable commutator length for surfaces.
problem Stable commutator length in surfaces.
method Finding standard forms of admissible surfaces and proving homology vanishing conditions.
result Isometric embeddings preserve stable commutator length.
Article provides conditions for embedding braid groups into mapping class groups.
problem Embedding braid groups into mapping class groups.
method Necessary and sufficient condition for embedding finite index subgroups.
result Conditions for embedding braid groups into mapping class groups.
Embedded minimal surfaces of finite total curvature in R3 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 of compact Riemann surfaces with finitely many punctures…
Sharp bounds on distortion of surfaces in 3D space.
problem Finding the minimum distortion of surfaces in 3D space.
method Analyzing convex embedded 2-spheres and surfaces of positive genus.
result π/2 is a sharp lower bound on the distortion of surfaces of positive genus.
Arnlind, Hoppe and Huisken showed how to express the Gauss and mean curvature of a surface embedded in a Riemannian manifold in terms of Poisson brackets of the embedding coordinates. We generalize these expressions to the pseudo-Riemannian setting and derive explicit formulas for the case of surfaces embedded in $\R^m…
We prove there exists a compact embedded minimal surface in a complete finite volume hyperbolic 3-manifold N. We also obtain a least area, incompressible, properly embedded, finite topology, 2-sided surface. We prove a properly embedded minimal surface of bounded curvature has finite topology. This dete…
Paper uses harmonic surfaces to model surfaces of any complexity.
problem Topological limitations of minimal surfaces restrict their use.
method Weierstrass representation for harmonic surfaces to construct arbitrary genus surfaces.
result Harmonic surfaces can be used to create surfaces of arbitrary genus.
Improved bound on first eigenvalue of minimal surfaces in S3.
problem Bounding the first eigenvalue of minimal surfaces in S3. method Proved λ1≥1+εg for embedded minimal surfaces Σ in S3. result Improved bound on the first eigenvalue of λ1. We construct examples of complex algebraic surfaces not admitting normal embeddings (in the sense of semialgebraic or subanalytic sets) with image a complex algebraic surface.
We prove prove a bridge principle at infinity for area-minimizing surfaces in the hyperbolic space H3, and we use it to prove that any open, connected, orientable surface can be properly embedded in H3 as an area-minimizing surface. Moreover, the embedding can be constructed in such a way that t…
We prove the existence of embedded closed constant curvature curves on convex surfaces.
The paper explores shortest path embeddings on surfaces.
problem Whether every topologically embeddable graph can be embedded as shortest paths on surfaces.
method Investigates Riemannian metrics on surfaces to find shortest path embeddings.
result For some metrics, every graph embeddable on a surface can be embedded as shortest paths.