1. I would like to define a complex valued function
z -> f(z). For example f(z) = Im(z)^2. How do I define z so it is
represented as a complex float?
2. I would like to approximate a Poncare sum over the modular group.
Can you give me a reference for computing something like
\sum_{\gamma \in \Gamma} f(z,\gamma(z))
Thanks
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