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I am reading the paper "AN ARITHMETIC FORMULA FOR THE PARTITION FUNCTION" by Kathrin Bringmann and Ken Ono. In the proof of Proposition 4.2 they make reference to the existence of a bijection between the solutions to the Diophantine equation with $k,c>0$


and the points of the orbits

$\displaystyle \bigcup_{Q\in Q_{24n-1}^p/\Gamma_0(6)}\lbrace{ A\tau_{Q}:A\in \Gamma_0(6)/\Gamma_{\tau_Q}\rbrace}.$

They do give some reasons why this exists but I am having trouble filling in the details. Does anyone know how to fill in the details that I think I am missing?

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May be you can say something more on the notations... Or a more precise reference (I guess you have a misprint in the title). – Filippo Alberto Edoardo Apr 6 '12 at 9:32
Link to the paper: – B R Apr 6 '12 at 13:48

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