English

On a classification of axiom A diffeomorphisms with codimension one basic sets and isolated saddles

Dynamical Systems 2024-03-27 v1

Abstract

Let MnM^n, n3n\geq 3, be a closed orientable nn-manifold and Dk(Mn;a,b,c)\mathbb{D}_k(M^n;a,b,c) the set of axiom A diffeomorp\-hisms f:MnMnf: M^n\to M^n satisfying the following conditions: (1) ff has k1k\geq 1 nontrivial basic sets each is either an orientable codimension one expanding attractor or an orientable codimension one contracting repeller, and other trivial basic sets which are aa sinks, bb sources, cc saddles; (2) the invariant manifolds of isolated saddles are intersected transversally. We classify the diffeomorphisms from Dk(Mn;a,b,c)\mathbb{D}_k(M^n;a,b,c) up to the global conjugacy on non-wandering sets for the following subsets Sk(Mn;a,b,c),Pk(Mn;0,0,1),Mk(Mn;0,0,1)\mathbb{S}_k(M^n;a,b,c), \mathbb{P}_k(M^n;0,0,1), \mathbb{M}_k(M^n;0,0,1) of Dk(Mn;a,b,c)\mathbb{D}_k(M^n;a,b,c) where Sk(Mn;a,b,c)\mathbb{S}_k(M^n;a,b,c) satisfies to the following conditions: (1S1_{\mathbb{S}}) every nontrivial basic set of any fSk(Mn;a,b,c)f\in\mathbb{S}_k(M^n;a,b,c) is uniquely bunched, and there is at least one nontrivial attractor and at least one nontrivial repeller, i.e. k2k\geq 2; (2S2_{\mathbb{S}}) c1c\geq 1 and all isolated saddles have the same Morse index belonging to {1,n1}\{1,n-1\}. The subset Pk(Mn;0,0,1)Dk(Mn;0,0,1)\mathbb{P}_k(M^n;0,0,1)\subset\mathbb{D}_k(M^n;0,0,1) satisfies to the following conditions: (1P1_{\mathbb{P}}) any boundary point of fPk(Mn;0,0,1)f\in\mathbb{P}_k(M^n;0,0,1) is fixed; (2P2_{\mathbb{P}}) a unique isolated saddle has Morse index different from {1,n1}\{1,n-1\}. The subset Mk(Mn;0,0,1)Dk(Mn;0,0,1)\mathbb{M}_k(M^n;0,0,1)\subset\mathbb{D}_k(M^n;0,0,1) satisfies to the following conditions: (1M1_{\mathbb{M}}) any boundary point of fMk(Mn;0,0,1)f\in\mathbb{M}_k(M^n;0,0,1) is fixed; (2M2_{\mathbb{M}}) a unique isolated saddle has Morse index belonging to {1,n1}\{1,n-1\}. The classification is based on a description of topological structure of supporting manifolds MnM^n.

Keywords

Cite

@article{arxiv.2403.17439,
  title  = {On a classification of axiom A diffeomorphisms with codimension one basic sets and isolated saddles},
  author = {V. Medvedev and E. Zhuzhoma},
  journal= {arXiv preprint arXiv:2403.17439},
  year   = {2024}
}
R2 v1 2026-06-28T15:33:45.544Z