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We prove that a constrained Willmore immersion of a 2-torus into the conformal 4-sphere is either of "finite type", that is, has a spectral curve of finite genus, or is of "holomorphic type" which means that it is super conformal or…

Differential Geometry · Mathematics 2012-12-21 Christoph Bohle

We investigate the operation of torus surgery on tori embedded in $S^4$. Key questions include which 4-manifolds can be obtained in this way, and the uniqueness of such descriptions. As an application we construct embeddings of 3-manifolds…

Geometric Topology · Mathematics 2019-02-27 Kyle Larson

We propose a class of toric Lagrangian A-branes on the resolved conifold that is suitable to describe torus knots on S^3. The key role is played by the SL(2,Z) transformation, which generates a general torus knot from the unknot. Applying…

High Energy Physics - Theory · Physics 2014-07-14 Hans Jockers , Albrecht Klemm , Masoud Soroush

We study the projective models of complex K3 surfaces polarized by a line bundle L such that all smooth curves in |L| have non-general Clifford index. Such models are in a natural way contained in rational normal scrolls. We use this study…

Algebraic Geometry · Mathematics 2007-05-23 Trygve Johnsen , Andreas Leopold Knutsen

In this paper, we study non-planar degeneracies with cylindrical configurations. They could be constructed by the product $\mathbb{CP}^1 \times T$ of the projective plane and a complex torus with embedding $(m,n)$. We prove that their…

Algebraic Geometry · Mathematics 2026-02-17 Jia-Li Mo , Meirav Amram , Cheng Gong

This paper is devoted to the classification of embeddings of higher dimensional manifolds. We study the case of embeddings $S^p\times S^q\to S^m$, which we call knotted tori. The set of knotted tori in the the space of sufficiently high…

Geometric Topology · Mathematics 2008-04-01 M. Cencelj , D. Repovš , M. Skopenkov

Dense packings of nonoverlapping bodies in three-dimensional Euclidean space are useful models of the structure of a variety of many-particle systems that arise in the physical and biological sciences. Here we investigate the packing…

Statistical Mechanics · Physics 2014-02-28 Ruggero Gabbrielli , Yang Jiao , Salvatore Torquato

We exhibit monotone Lagrangian tori inside the standard symplectic four-dimensional unit ball that become Hamiltonian isotopic to the Clifford torus, i.e.~the standard product torus, only when considered inside a strictly larger ball (they…

Symplectic Geometry · Mathematics 2020-04-01 Georgios Dimitroglou Rizell

We prove that the problem of deciding whether a 2- or 3-dimensional simplicial complex embeds into $\mathbb{R}^3$ is NP-hard. Our construction also shows that deciding whether a 3-manifold with boundary tori admits an $\mathbb{S}^{3}$…

Geometric Topology · Mathematics 2018-08-23 Arnaud de Mesmay , Yo'av Rieck , Eric Sedgwick , Martin Tancer

We construct eternal mean curvature flows of tori in perturbations of the standard unit sphere $\Bbb{S}^3$. This has applications to the study of the Morse homologies of area functionals over the space of embedded tori in $\Bbb{S}^3$.

Differential Geometry · Mathematics 2023-02-15 Claudia V. S. Magaño , Graham Smith

In this note we study solid tori in contact manifolds. Specifically, we study the width of a knot type and give criteria for when it is equal to the maximal Thurston-Bennequin invariant, and when it is larger. We also prove there are many…

Geometric Topology · Mathematics 2025-02-24 John Etnyre , Youlin Li , Bülent Tosun

We prove that there exist Beltrami fields in Euclidean space, with sharp decay at infinity, which have a prescribed set of invariant tori (possibly knotted or linked) that enclose an arbitrarily large number of hyperbolic periodic orbits.…

Dynamical Systems · Mathematics 2019-09-18 Alberto Enciso , Alejandro Luque , Daniel Peralta-Salas

Let M be a closed orientable irreducible 3-manifold, and let f be a diffeomorphism over M. We call an embedded 2-torus T an Anosov torus if it is invariant and the induced action of f over \pi_1(T) is hyperbolic. We prove that only few…

Dynamical Systems · Mathematics 2010-11-16 F. Rodriguez Hertz , J. Rodriguez Hertz , R. Ures

In this article we construct a specific projective degeneration of K3 surfaces of degree 2g-2 in P^g to a union of 2g-2 planes, which meet in such a way that the combinatorics of the configuration of planes is a triangulation of the…

Algebraic Geometry · Mathematics 2007-05-23 Ciro Ciliberto , Rick Miranda , Mina Teicher

The Clifford tori in the 3-sphere are a one-parameter family of flat, two-dimensional, constant mean curvature (CMC) surfaces. This paper demonstrates that new, topologically non-trivial CMC surfaces resembling a pair of neighbouring…

Differential Geometry · Mathematics 2007-05-23 Adrian Butscher , Frank Pacard

We show that any minimal torus in $S^3$ which is Alexandrov immersed must be rotationally symmetric. An analogous result holds for surfaces of constant mean curvature.

Differential Geometry · Mathematics 2013-07-26 S. Brendle

In this short article we investigate the topology of the moduli space of two-convex embedded tori $S^{n-1}\times S^1\subset \mathbb{R}^{n+1}$. We prove that for $n \geq 3$ this moduli space is path-connected, and that for $n = 2$ the…

Differential Geometry · Mathematics 2021-10-14 Reto Buzano , Robert Haslhofer , Or Hershkovits

There exists a smooth foliation with 3 singular points on the two-dimensional torus such that any lifting of a leaf of this foliation on the universal covering of the torus is a dense subset of the covering.

Geometric Topology · Mathematics 2007-05-23 Dmitri Panov

We give a complete coarse classification of Legendrian and transverse torus knots in any contact structure on $S^3$.

Geometric Topology · Mathematics 2022-07-01 John B. Etnyre , Hyunki Min , Anubhav Mukherjee

We prove that certain Riemannian manifolds can be isometrically embedded inside Calabi-Yau manifolds. For example we prove that given any real-analytic one parameter family of Riemannian metrics $g_t$ on a 3-dimensional manifold $Y$ with…

Differential Geometry · Mathematics 2007-05-23 Diego Matessi