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""" Periods of modular forms. """
# The following idea just occurred to me. # We could use that $\langle T_n(g), x\rangle = \langle g, T_n(x)\rangle$ # for any Hecke operator $T_n$, so that we only need to compute # the period integrals $\langle g, x_i\rangle$. Then we obtain all pairings # $\langle T_n(g), x_i \rangle = \langle g , T_n(x_i) \rangle$. # Since the $T_n(g)$ span the simple $\T$-module $S_k(\Gamma;\Q)[I]$, # this must give all pairings. However, it requires computing # only $2d$ pairings instead of $2d^2$ pairings, which is potentially # a huge savings when $d$ is large.
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