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Let S be a finite union of (pairwise disjoint but possibly knotted and linked) closed curves and tubes in the round sphere S^3 or in the flat torus T^3. In the case of the torus, S is further assumed to be contained in a contractible subset…

Analysis of PDEs · Mathematics 2015-05-26 Alberto Enciso , Daniel Peralta-Salas , Francisco Torres de Lizaur

In this paper, we show that an embedded Weingarten surface in S^3 of genus 1 must be rotationally symmetric, provided that certain structure conditions are satisfied. The argument involves an adaptation of our proof of Lawson's Conjecture…

Differential Geometry · Mathematics 2014-02-24 S. Brendle

Constant mean curvature (CMC) tori in Euclidean 3-space are described by an algebraic curve, called the spectral curve, together with a line bundle on this curve and a point on $ S ^ 1 $, called the Sym point. For a given spectral curve the…

Differential Geometry · Mathematics 2016-09-07 Emma Carberry , Martin Ulrich Schmidt

We give explicit realizations with small integer coordinates for all triangulated tori with up to 12 vertices. In particular, we provide coordinate-minimal realizations in general position for all triangulations of the torus with 7, 8, 9,…

Metric Geometry · Mathematics 2007-09-19 Stefan Hougardy , Frank H. Lutz , Mariano Zelke

We show that in any triangulation of a solid torus, there is a pre-core curve that lies in the 2-skeleton and that intersects the interior of each face in at most 10 straight arcs. By definition, a pre-core curve is a simple closed curve…

Geometric Topology · Mathematics 2011-06-16 Marc Lackenby

We give an example of a smooth characteristic embedding of a torus in $\s^2 \times \s^2 \# \s^1 \times \s^3$ such that there exists no diffeomorphism of the ambient $4$-manifold that induces the Dehn twist along a meridian of the torus, but…

Geometric Topology · Mathematics 2025-06-18 Shital Lawande , Kuldeep Saha

Echeverria recently introduced an invariant for a smoothly embedded torus in a homology $S^1\times S^3$, using gauge theory for singular connections. We define a new topological invariant of such an embedded torus, analogous to the…

Geometric Topology · Mathematics 2022-11-02 Daniel Ruberman

In 1965 Willmore conjectured that the integral of the square of the mean curvature of a torus immersed in $R^3$ is at least $2\pi^2$ and attains this minimal value if and only if the torus is a M\"obius transform of the Clifford torus. This…

Differential Geometry · Mathematics 2014-03-27 Andrea Mondino , Huy The Nguyen

A family of embedded rotationally symmetric tori in the Euclidean 3-space consisting of two opposite signed constant mean curvature surfaces that converge as varifolds to a double round sphere is constructed. Using complete elliptic…

Differential Geometry · Mathematics 2022-06-01 Christian Scharrer

A Euclidean minimal torus with planar ends gives rise to an immersed Willmore torus in the conformal 3--sphere $S^3=\R^3\cup \{\infty\}$. The class of Willmore tori obtained this way is given a spectral theoretic characterization as the…

Differential Geometry · Mathematics 2014-11-18 Christoph Bohle , Iskander A. Taimanov

We classify centerless Lie G-tori of type C_r including the most difficult case r=2 by applying techniques due to Seligman. In particular, we show that the coordinate algebra of a Lie G-torus of type C_2 is either an associative G-torus…

Rings and Algebras · Mathematics 2007-05-23 Georgia Benkart , Yoji Yoshii

This work studies existence and regularity questions for attracting invariant tori in three dimensional dissipative systems of ordinary differential equations. Our main result is a constructive method of computer assisted proof which…

Dynamical Systems · Mathematics 2020-01-14 Maciej J. Capinski , Emmanuel Fleurantin , Jason D. Mireles James

Work of Glover and Huneke shows that a cubic graph embeds into the real projective plane if and only if it does not contain one of six topological minors called cubic projective plane obstructions. Here we classify up to equivalence the…

Combinatorics · Mathematics 2024-10-01 Marie Kramer

We determine all hyperbolic 3-manifolds $M$ admitting two toroidal Dehn fillings at distance 4 or 5. We show that if $M$ is a hyperbolic 3-manifold with a torus boundary component $T_0$, and $r,s$ are two slopes on $T_0$ with $\Delta(r,s) =…

Geometric Topology · Mathematics 2009-09-29 Cameron McA. Gordon , Ying-Qing Wu

Twist tori are examples of exotic monotone lagrangian tori, presented in [1]. This tree of examples grew up over the first one --- the torus $\Theta \in \R^4$, constructured in [2] and [3]. On the other hand, in [4] and [5] we proposed a…

Symplectic Geometry · Mathematics 2015-05-18 Nikolay A. Tyurin

We study a special Teichmueller curve in the moduli space of curves of genus 3 that is intersected by infinitely many other Teichmueller curves. The Veech group of the underlying translation surface is SL_2(Z). All occurring Teichmueller…

Algebraic Geometry · Mathematics 2007-05-23 Frank Herrlich , Gabriela Schmithuesen

In this survey, we discuss various aspects of the minimal surface equation in the three-sphere S^3. After recalling the basic definitions, we describe a family of immersed minimal tori with rotational symmetry. We then review the known…

Differential Geometry · Mathematics 2013-07-29 S. Brendle

We study the complex deformations of orientifolds of D3-branes at toric CY singularities, using their description in terms of dimer diagrams. We describe orientifold quotients that have fixed lines or fixed points in the dimer, and…

High Energy Physics - Theory · Physics 2016-08-24 Ander Retolaza , Angel Uranga

In algebraic geometry, trigonal curves can always be embedded into Hirzebruch surfaces. In tropical geometry, the notion of trigonality does not have a unique translation. We focus on the characterization in terms of the existence of a…

Algebraic Geometry · Mathematics 2026-02-03 Hannah Markwig , Angelina Zheng

We construct embedded Willmore tori with small area constraint in Riemannian three-manifolds under some curvature condition used to prevent M\"obius degeneration. The construction relies on a Lyapunov-Schmidt reduction; to this aim we…

Differential Geometry · Mathematics 2019-05-08 Norihisa Ikoma , Andrea Malchiodi , Andrea Mondino