fact: Definition rat_limit(f : Rat -> Rat -> Prop)(p L : Rat) := forall epsilon, ~ (epsilon == 0) -> exists delta, (~delta == 0) /\ forall x v, f x v -> (ratDistance x p) <= delta -> (ratDistance v L) <= epsilon.
imports: Arith FCF.Fold List FCF.StdNat FCF.Rat Arith