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Jan 10, 2023 at 14:21 comment added David Loeffler That is not the right definition for $\Gamma_1(N)$ either (it will not leave $M_k(\Gamma_1(N))$ invariant).
Jan 9, 2023 at 22:35 history edited Adithya Chakravarthy CC BY-SA 4.0
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Jan 7, 2023 at 23:48 comment added Adithya Chakravarthy @reuns I'm pretty sure the Hecke operators are defined the same way as they are for $M_2(\Gamma_1(N))$: for $p$ not dividing $N$, the operator $T_p$ sends $f(\tau)$ to $$\sum_{i=0}^{p-1}f\left( \dfrac{\tau+i}{p}\right) + pf(p\tau).$$ And for $p$ dividing $N$, the operator $T_p$ sends $f(\tau)$ to $$\sum_{i=0}^{p-1}f\left( \dfrac{\tau+i}{p}\right).$$
Jan 7, 2023 at 21:04 comment added reuns What is the Hecke operator on $M_2(\Gamma(N))$ again?
Jan 7, 2023 at 20:34 history edited Adithya Chakravarthy
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Jan 7, 2023 at 17:27 history edited Adithya Chakravarthy CC BY-SA 4.0
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Jan 7, 2023 at 4:46 history edited Adithya Chakravarthy CC BY-SA 4.0
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Jan 7, 2023 at 4:24 history edited Adithya Chakravarthy CC BY-SA 4.0
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Jan 7, 2023 at 0:31 comment added LSpice Spelling note: 'Weierstrass', not 'Weierstrauss'. I have edited accordingly.
Jan 7, 2023 at 0:31 history edited LSpice CC BY-SA 4.0
Spelling; link to book; deleted smiley
Jan 6, 2023 at 20:38 history edited Adithya Chakravarthy CC BY-SA 4.0
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Jan 6, 2023 at 20:31 history asked Adithya Chakravarthy CC BY-SA 4.0