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The modular group is the group of $2\times2$ matrices with integer coefficients and determinant $1$; it is denoted by $$\mathrm{SL}(2,\mathbb{Z})$$ or $$\mathrm{SL}_2(\Z)$$.

A standard set of generators for the modular group are the matrices: $S:=\begin{pmatrix}0&-1\\1&0\end{pmatrix}\quad\text{and}\quad T:=\begin{pmatrix}1&1\\0&1 \end{pmatrix}.$

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• Review status: reviewed
• Last edited by David Farmer on 2019-04-11 22:59:10
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