It is well known that the space of modular forms for $SL_2(\mathbb Z)$ (i.e. level $1$) has the structure of a graded ring generated by $E_4$ and $E_6$ in degrees $4$ and $6$ respectively. Is there a similar description for modular forms of higher level?
2026-04-01 07:17:19.1775027839
Nice description of space of modular forms
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