∀ {β : Type u_1} {α : Type u_2} (toBallPackage : Besicovitch.BallPackage β α) (τ : ℝ) (one_lt_tau : 1 < τ)
  (toBallPackage_1 : Besicovitch.BallPackage β α) (τ_1 : ℝ) (one_lt_tau_1 : 1 < τ_1),
  ({ toBallPackage := toBallPackage, τ := τ, one_lt_tau := one_lt_tau } =
      { toBallPackage := toBallPackage_1, τ := τ_1, one_lt_tau := one_lt_tau_1 }) =
    (toBallPackage = toBallPackage_1 ∧ τ = τ_1)