have : x ≃ a / b := x_eqv
ℚ : Type
inst✝ : Rational ℚ
x : ℚ
x✝ : AltPositive x
a b : ℤ
a_pos : AP (Positive a)
b_pos : AP (Positive b)
x_eqv : x ≃ Rational.from_integer a / Rational.from_integer b
this✝² : AP (Positive a)
this✝¹ : sgn a ≃ 1
this✝ : AP (Positive b)
this : sgn b ≃ 1
⊢ Positive x
ℚ : Type
inst✝ : Rational ℚ
x : ℚ
x✝ : AltPositive x
a b : ℤ
a_pos : AP (Positive a)
b_pos : AP (Positive b)
x_eqv : x ≃ Rational.from_integer a / Rational.from_integer b
this✝³ : AP (Positive a)
this✝² : sgn a ≃ 1
this✝¹ : AP (Positive b)
this✝ : sgn b ≃ 1
this : x ≃ Rational.from_integer a / Rational.from_integer b
⊢ Positive x