feat(algebra/order/archimedean): Comparing with rationals determines the order (#13602)
feat(algebra/order/archimedean): Comparing with rationals determines the order (#13602)

In a linear ordered field, if `q < x → q ≤ y` for all `q : ℚ`, then `x ≤ y`, and similar results.





leanprover-community/mathlib,leanprover-community/mathlib