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The group $SL(2,\R)$ acts on the upper half-plane via linear fractional transformation, given by $$ \left(\begin{array}{ll}a&b\\c&d \end{array}\right)(z) = \frac{a z + b}{c z + d} . $$

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  • Review status: beta
  • Last edited by David Farmer on 2019-04-13 15:37:38
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