How would one define an elliptic curve of over the algebraic closure of a field which is not a finite field or a number field on SAGE? Specifically, I'd like to define the curve over the algebraic closure of Q(x) (fraction field of the polynomial ring Q[x]). A problem I had was defining the elliptic curve over the algebraic closure of this field and I found that algebraic_closure() wasn't a valid option for the field that I tried to use. It seems like a lot of functions like finding torsion points are limited to certain fields (ex. number fields, field of rationals, etc.).
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