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In his influential work, Thurston introduced a norm on the second homology group of compact orientable 3-manifolds M, which by duality also determines a dual norm on the second cohomology group. A natural question, initiated by Thurston, is…

Geometric Topology · Mathematics 2026-04-10 Mehdi Yazdi

We provide several characterizations of ring-shaped rotationally symmetric solutions to the Serrin problem in arbitrary dimensions.

Analysis of PDEs · Mathematics 2025-10-13 Virginia Agostiniani , Chiara Bernardini , Stefano Borghini , Lorenzo Mazzieri

Thurston's hyperbolization theorem for Haken manifolds and normal surface theory yield an algorithm to determine whether or not a compact orientable 3-manifold with nonempty boundary consisting of tori admits a complete finite-volume…

Geometric Topology · Mathematics 2019-02-01 Robert C. Haraway

For a jointly integrable partially hyperbolic diffeomorphism $f$ on a 3-manifold $M$ with virtually solvable fundamental group which satisfies Diophantine condition along the center foliation, we show that the cohomological equation…

Dynamical Systems · Mathematics 2025-04-02 Wenchao Li , Yi Shi

Tools of the intrinsic analysis on manifolds, helpful in solving the invariant inverse problem of the calculus of variations are being presented comprising a combined approach which consists in the simultaneous imposition of symmetry…

General Mathematics · Mathematics 2017-08-22 Roman Ya. Matsyuk

We introduce the tautological rings of moduli stacks of twisted curves and establish some basic properties.

Algebraic Geometry · Mathematics 2025-10-02 Hsian-Hua Tseng

This article presents a whirlwind tour of some results surrounding the Koebe-Andre'ev-Thurston Theorem, Bill Thurston's seminal circle packing theorem that appears in Chapter 13 of The Geometry and Topology of Three-Manifolds. It will…

Geometric Topology · Mathematics 2020-08-31 Philip L. Bowers

Using homological residue fields, we define supports for big objects in tensor-triangulated categories and prove a tensor-product formula.

Category Theory · Mathematics 2024-09-10 Paul Balmer

In analogy with the Thurston norm, we define for an orientable 3-manifold $M$ a numerical function on $H_2(M;Q/Z)$. This function measures the minimal complexity of folded surfaces representing a given homology class. A similar function is…

Geometric Topology · Mathematics 2014-10-01 Vladimir Turaev

We prove that a closed, simply connected, positively curved, cohomogeneity-three manifold whose quotient space has no boundary is rationally elliptic, thus providing a generalization of similar results regarding rational ellipticity of…

Differential Geometry · Mathematics 2025-05-29 Elahe Khalili Samani , Marco Radeschi

A notion of stratification is introduced for any compactly generated triangulated category T endowed with an action of a graded commutative noetherian ring R. The utility of this notion is demonstrated by establishing diverse consequences…

Category Theory · Mathematics 2014-02-26 Dave Benson , Srikanth B. Iyengar , Henning Krause

Topological invariants such as winding numbers and linking numbers appear as charges of topological solitons in diverse nonlinear physical systems described by a unit vector field defined on two and three dimensional manifolds. While the…

Pattern Formation and Solitons · Physics 2024-01-23 Radha Balakrishnan , Rossen Dandoloff , Avadh Saxena

In this paper, we regard the smooth quadric threefold $Q_{3}$ as Lagrangian Grassmannian and search for fixed rational curves of low degree in $Q_{3}$ with respect to a torus action, which is the maximal subgroup of the special linear group…

Algebraic Geometry · Mathematics 2025-07-08 Kiryong Chung , Sukmoon Huh , Sang-Bum Yoo

We prove that for every closed, connected, orientable, irreducible 3-manifold, there exists an alternating group A_n which is not the topological symmetry group of any graph embedded in the manifold. We also show that for every finite group…

Geometric Topology · Mathematics 2011-08-16 Erica Flapan , Harry Tamvakis

The twisted torsion of a 3-manifold is well-known to be zero whenever the corresponding twisted Alexander module is non-torsion. Under mild extra assumptions we introduce a new twisted torsion invariant which is always non-zero. We show how…

Geometric Topology · Mathematics 2010-09-30 Jae Choon Cha , Stefan Friedl

We develop a systematic way to solve linear equations involving tensors of arbitrary rank. We start off with the case of a rank $3$ tensor, which appears in many applications, and after finding the condition for a unique solution we derive…

Mathematical Physics · Physics 2021-09-21 Damianos Iosifidis

We classify isotopy classes of automorphisms (self-homeomorphisms) of 3-manifolds satisfying the Thurston Geometrization Conjecture. The classification is similar to the classification of automorphisms of surfaces developed by Nielsen and…

Geometric Topology · Mathematics 2007-05-23 Leonardo N. Carvalho , Ulrich Oertel

We introduce the notion of a manifold admitting a simple compact Cartan 3-form $\om^3$. We study algebraic types of such manifolds specializing on those having skew-symmetric torsion, or those associated with a closed or coclosed 3-form…

Differential Geometry · Mathematics 2013-04-04 Hong Van Le

A connection is established between the soliton equations and curves moving in a three dimensional space $V_{3}$. The sign of the self-interacting terms of the soliton equations are related to the signature of $V_{3}$. It is shown that…

solv-int · Physics 2009-10-31 Metin Gurses

This paper continues our exploration of homology cobordism of 3-manifolds using our recent results on Cheeger-Gromov rho-invariants associated to amenable representations. We introduce a new type of torsion in 3-manifold groups we call…

Geometric Topology · Mathematics 2014-02-26 Jae Choon Cha , Kent E. Orr