A bound for diameter of arithmetic hyperbolic orbifolds
2021
Let $${\mathcal {O}}$$
be a closed n-dimensional arithmetic (real or complex) hyperbolic orbifold. We show that the diameter of $${\mathcal {O}}$$
is bounded above by $$\begin{aligned} \frac{c_1\log \mathrm {vol}({\mathcal {O}}) + c_2}{h({\mathcal {O}})}, \end{aligned}$$
where $$h({\mathcal {O}})$$
is the Cheeger constant of $${\mathcal {O}}$$
, $$\mathrm {vol}({\mathcal {O}})$$
is its volume, and constants $$c_1$$
, $$c_2$$
depend only on n.
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