pictorsgalrep

Function: pictorsgalrep
Section: modular_forms
C-Name: PicTorsGalRep
Prototype: GGDG
Help: pictorsgalrep(J,l,{Chi}): Given a p-adic Jacobian J, a prime l, and the characteristic polynomial Lp of Frob_p on J, computes the Galois representation afforded by J[l]. If Chi is present, it must be a divisor of Lp mod l which is coprime to its cofactor mod l, and we compute the Galois representation afforded by the Fl-subspace of J[l] on which Frob_p acts with characteristic polynomial Chi.
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