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math.GN一般拓扑1
2606.11943 2026-06-11 math.DS math.DG math.GN 新提交

Continuum-wise hyperbolicity is exactly the pseudo-Anosov dynamics with spine singularities

连续统双曲性恰好是具有脊柱奇点的伪阿诺索夫动力学

Rodrigo Arruda, Bernardo Carvalho, Piotr Oprocha, Alberto Sarmiento

AI总结 证明曲面同胚是cw_F-双曲的当且仅当它是奇点仅为脊柱(1-叉)的伪阿诺索夫同胚,并分类至拓扑共轭:要么共轭于环面上的阿诺索夫自同构,要么共轭于球面上的标准超椭圆商。

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AI中文摘要

我们建立了连续统双曲曲面同胚的完整结构分类。具体地,我们证明了一个曲面同胚是cw$_F$-双曲的当且仅当它是一个伪阿诺索夫同胚,其奇点仅由脊柱(1-叉)组成。此外,我们将这些系统分类到拓扑共轭,表明每个这样的同胚要么共轭于环面$\mathbb{T}^2$上的阿诺索夫自同构,要么共轭于球面$\mathbb{S}^2$上的标准超椭圆商。作为这一分类的严格推论,我们证明了这种动力学在亏格大于一的曲面、克莱因瓶和射影平面上是被严格阻碍的。

英文摘要

We establish a complete structural classification for continuum-wise hyperbolic surface homeomorphisms. Specifically, we prove that a surface homeomorphism is cw$_F$-hyperbolic if, and only if, it is a pseudo-Anosov homeomorphism whose singularities consist exclusively of spines (1-prongs). Furthermore, we classify these systems up to topological conjugacy, showing that every such homeomorphism is conjugate to either an Anosov automorphism on the torus $\mathbb{T}^2$ or to its standard hyperelliptic quotient on the sphere $\mathbb{S}^2$. As a rigid consequence of this classification, we show that such dynamics are strictly obstructed on surfaces of genus greater than one, the Klein bottle, and the projective plane.