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Large scale properties of groups; growth functions; Dehn functions; small cancellation properties; hyperbolicity and CAT(0); actions and representations; combinatorial group theory; presentations

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What is the least $n\ge1$ for which there is an $n$-dimensional closed flat manifold with pe...

For $G=A_5=\text{PSL}_2(\mathbb{F}_5)$, the minimal dimension of a flat manifold with holonomy group $G$ is 12 15 according to Theorem (V.1) in W. Plesken:``Minimal dimensions for flat manifolds with …
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