Subpolynomial relative asymptotic dimension of real hyperbolic space

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Let dd be the dimension of real hyperbolic space Hd\mathbb{H}^d. Let o(poly⁡(d))o(\operatorname{poly}(d)) denote the family of non-decreasing functions ff such that

lim⁡t→∞f(t)td=0.\lim_{t\to\infty}\frac{f(t)}{t^d}=0.

Subpolynomial asymptotic-dimension conjecture.

asdim⁡o(poly⁡(d))(Hd)=d.\operatorname{asdim}_{o(\operatorname{poly}(d))}(\mathbb{H}^d)=d.

The paper describes this as an optimality statement for a preceding theorem. A weaker equality with poly⁡(d−1)\operatorname{poly}(d-1) would already have consequences for excluding certain regular maps from Hd\mathbb{H}^d to products involving trees, but the conjectured subpolynomial statement itself is left unresolved in the supplied text.

References

Primary source

David Hume, John M. Mackay and Romain Tessera, “Asymptotic dimension for covers with controlled growth”, arXiv:2303.01969 (2023).

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