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Equations for Modular Curves - Magma

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<strong>Modular</strong>ity<br />

Finiteness Results<br />

Computationality<br />

Departure point<br />

Generalization<br />

Newness<br />

Let C be a new modular curve of level N<br />

then ∃f1,...,fk ∈ NewN := {normalized new<strong>for</strong>ms on S2(N)} such<br />

that<br />

Then<br />

J1(N) new Q ∼ ∏ Af <br />

<br />

Q<br />

J(C) ∼<br />

f∈NewN/GQ<br />

π ∗ (H 0 (C,Ω 1 )) =<br />

k<br />

i=1<br />

dq<br />

S2(Afi )<br />

q =<br />

k<br />

i=1<br />

Enrique González Jiménez <strong>Equations</strong> <strong>for</strong> <strong>Modular</strong> <strong>Curves</strong><br />

k<br />

∏Afi i=1<br />

,<br />

〈 σ dq<br />

fi(q) | σ ∈ Gal(Efi /Q)〉<br />

q

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