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The path closure of figure eight knot complement space, $N_0$, supports a natural DA (derived from Anosov) expanding attractor. Using this attractor, Franks-Williams constructed the first example of non-transitive Anosov flow on the…

Dynamical Systems · Mathematics 2020-04-21 Jiagang Yang , Bin Yu

The first half of this paper is concerned with the topology of the space $\AAA(M)$ of (not necessarily contact) Anosov vector fields on the unit tangent bundle $M$ of closed oriented hyperbolic surfaces $\Sigma$. We show that there are…

Dynamical Systems · Mathematics 2014-05-01 Shigenori Matsumoto

An overview is given on how superconductivity with anisotropic pairing can be realised from repulsive electron-electron interaction. (i) We start from the physics in one dimension, where the Tomonaga-Luttinger theory predicts that, while…

Strongly Correlated Electrons · Physics 2015-06-24 Hideo Aoki

We investigate the combinatorial analogues, in the context of normal surfaces, of taut and transversely measured (codimension 1) foliations of 3-manifolds. We establish that the existence of certain combinatorial structures, a priori weaker…

Geometric Topology · Mathematics 2007-05-23 Danny Calegari

A smooth Anosov flow on a closed oriented three manifold $M$ gives rise to a Liouville structure on the four manifold $[-1,1]\times M$ which is not Weinstein, by a construction of Mitsumatsu and Hozoori. We call it the associated Anosov…

Symplectic Geometry · Mathematics 2022-11-15 Kai Cieliebak , Oleg Lazarev , Thomas Massoni , Agustin Moreno

We extend Raimi's classical partition theorem to the continuous setting of the circle and $n$-dimensional torus. Building on recent work of Hegyv\'ari, Pach, and Pham in finite groups, we prove that there exist measurable partitions of the…

Combinatorics · Mathematics 2025-12-02 Hunseok Kang , Doowon Koh , Dung The Tran

We give a characterization of the Anosov condition for reducible representations in terms of the eigenvalue magnitudes of the irreducible block factors of its block diagonalization. As in previous work, these Anosov representations comprise…

Group Theory · Mathematics 2024-11-26 Max Lahn

For any irreducible representation of a surface group into $\mathrm{SL}_2(\mathbb{C})$, we show that there exists a pants decomposition where the restriction to any pair of pants is irreducible and where no curve of the decomposition is…

Geometric Topology · Mathematics 2022-10-19 Renaud Detcherry , Thomas Le Fils , Ramanujan Santharoubane

Let M be a compact, connected, orientable, irreducible 3-manifold and T' an incompressible torus boundary component of M such that the pair (M,T') is not cabled. By a result of C. Gordon, if S and T are incompressible punctured tori in M…

Geometric Topology · Mathematics 2007-05-23 Luis G. Valdez-Sanchez

Y. Benoist proved that if a closed three-manifold M admits an indecomposable convex real projective structure, then M is topologically the union along tori and Klein bottles of finitely many sub-manifolds each of which admits a complete…

Geometric Topology · Mathematics 2018-03-28 Samuel A. Ballas , Jeffrey Danciger , Gye-Seon Lee

We study the irreducible decomposition under Sp(2n, R) of the space of torsion tensors of almost symplectic connections. Then a description of all symplectic quadratic invariants of torsion-like tensors is given. When applied to a manifold…

Symplectic Geometry · Mathematics 2019-07-25 Rui Albuquerque , Roger Picken

We prove a converse theorem for the case of quasi-split non-split even special orthogonal groups over finite fields. There are two main difficulties which arise from the outer automorphism and non-split part of the torus. The outer…

Representation Theory · Mathematics 2025-01-29 Alexander Hazeltine

In this article we study Figalli and Gigli's formulation of optimal transport between non-negative Radon measures in the setting of metric pairs. We carry over classical characterisations of optimal plans to this setting and prove that the…

Metric Geometry · Mathematics 2025-03-13 Mauricio Che

We show, under some natural conditions, that the set of abelian points on the non-anomalous subset of a closed irreducible subvariety $X$ intersected with the union of connected algebraic subgroups of codimension at least $\dim X$ in a…

Number Theory · Mathematics 2026-05-19 Jorge Mello

We classify five dimensional Anosov flows with smooth decomposition which are in addition transversely symplectic. Up to finite covers and a special time change, we find exectly the suspensions of symplectic hyperbolic automorphisms of four…

Dynamical Systems · Mathematics 2007-05-23 Yong Fang

We introduce a new version of expansiveness for flows. Let $M$ be a compact Riemannian manifold without boundary and $X$ be a $C^1$ vector field on $M$ that generates a flow $\varphi_t$ on $M$. We call $X$ {\it rescaling expansive} on a…

Dynamical Systems · Mathematics 2017-06-30 Xiao Wen , Lan Wen

This the first of a set of three papers about the Compression Theorem: if M^m is embedded in Q^q X R with a normal vector field and if q-m > 0, then the given vector field can be straightened (ie, made parallel to the given R direction) by…

Geometric Topology · Mathematics 2014-11-11 Colin Rourke , Brian Sanderson

Let ${\mathcal M}$ be a moduli space of stable vector bundles of rank $r$ and determinant $\xi$ on a compact Riemann surface $X$. Fix a semistable holomorphic vector bundle $F$ on $X$ such that $\chi(E\otimes F)= 0$ for $E \in \mathcal M$.…

Algebraic Geometry · Mathematics 2025-07-09 Indranil Biswas , Jacques Hurtubise

The Torsion Anomalous Conjecture states that an irreducible variety $V$ embedded in a semi-abelian variety contains only finitely many maximal $V$-torsion anomalous varieties. In this paper we consider an irreducible variety embedded in a…

Number Theory · Mathematics 2024-04-09 Sara Checcoli , Francesco Veneziano , Evelina Viada

Let $(X,T)$ be a Cantor minimal system, and let $\Gamma$ denote either its associated topological full group or the full group of a Bratteli diagram associated with $(X,T)$. In this paper we describe the structure of indecomposable…

Group Theory · Mathematics 2026-02-20 Artem Dudko , Constantine Medynets
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