On existence of expanding attractors with different dimensions
Abstract: We prove that $n$-sphere $\mathbb{S}n$, $n\geq 2$, admits structurally stable diffeomorphisms $\mathbb{S}n\to\mathbb{S}n$ with non-orientable expanding attractors of any topological dimension $d\in{1,\ldots,[\frac{n}{2}]}$ where $[x]$ is an integer part of $x$. One proves that $n$-torus $\mathbb{T}n$, $n\geq 2$, admits structurally stable diffeomorphisms $\mathbb{T}n\to\mathbb{T}n$ with orientable expanding attractors of any topological dimension $1\leq q\leq n-1$. We also prove that given any closed $n$-manifold $Mn$, $n\geq 2$, and any $d\in{1,\ldots,[\frac{n}{2}]}$, there is an axiom A diffeomorphism $f: Mn\to Mn$ with a $d$-dimensional non-orientable expanding attractor. Similar statements hold for axiom A flows.
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