Attribution-Share Alike 4.0 truetrue English Tiling of the upper-half space by fundamental domains of the modular group PSL_2(Z) author name string: Neozhaoliang Wikimedia...
\ar@{^(->}[dd] & \PSL_2(\mathbf{Z}) \ar@{^(->}[dd]\\ \mathbf{Z} \ar@{_(->}@/^/[ur] \ar@{^(->}@/_/[dr] \\ & \overline{\SL_2(\mathbf{R})} \ar@{->>}[r] & \PSL_2(\mathbf{R})...
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