I appreciated your previous responses on this subject. I would now
like to apply these modular symbols to elliptic curves. In
particular, I want to compute the algebraic value of a twisted L-
function by applying Birch's theorem in [MTT]
That is L(E,1,chi)^{alg} = sum_{a mod,m) chi(a)*{a,m}/Omega
For this to work, the modular symbols need to translate to real
numbers and I don't see the appropriate functions to perform this.
Best Wishes,
Jack Fearnley
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