Browsing by Subject "math.GR"
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Commutators in $\mathrm{SL}_2$ and Markoff surfaces I
(New Zealand Journal of Mathematics Committee, 2021)We show that the commutator equation over $\mathrm{SL}_2(\mathbb{Z})$ satisfies a profinite local to global principle, while it can fail with infinitely many exceptions for $\mathrm{SL}_2(\mathbb{Z}[\frac{1}{p}])$. The ...