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seen Jun 13 '12 at 1:47

May
30
awarded  Editor
May
30
revised Action of $SL_2(Z)$ on Markoff quadratic forms
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May
30
comment Action of $SL_2(Z)$ on Markoff quadratic forms
Thanks. I'm actually interested in the case where $f$ is a Markoff form. I guess asking about general quadratic forms was too optimistic. Anyway, I've now edited the question accordingly.
May
30
asked Action of $SL_2(Z)$ on Markoff quadratic forms