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Solutions:

1. As John Plameri pointed out, you can to use Integer(1) instead of 1.
2. I could also have done something like: E.lift_x(E.base_field()(1)) or E.lift_x(QQ(1))

Solutions:

1. As John Plameri pointed out, you can to use Integer(1) instead of 1.

2. I could also have done something like: E.lift_x(E.base_field()(1)) or E.lift_x(QQ(1))

   from sage.all import EllipticCurve, QQ, Integer E = EllipticCurve('37a'); E Elliptic Curve defined by y^2 + y = x^3 - x over Rational Field E.lift_x(Integer(1)) (1 : 0 : 1) E.lift_x(E.base_field()(1)) (1 : 0 : 1) E.lift_x(QQ(1)) (1 : 0 : 1)

Solutions:

1. As John Plameri pointed out, you can can to use Integer(1) instead of 1.

2. I could also have done something like: E.lift_x(E.base_field()(1)) or E.lift_x(QQ(1))