∀ {R : Type u_1} {B : Type u_2} {F : Type u_3} [inst : NontriviallyNormedField R] [inst_1 : NormedAddCommGroup F]
  [inst_2 : NormedSpace R F] [inst_3 : TopologicalSpace B] {ι : Type u_5} (Z : VectorBundleCore R B F ι) {b₀ b₁ b : B},
  b ∈ (trivializationAt F Z.Fiber b₀).baseSet ∩ (trivializationAt F Z.Fiber b₁).baseSet →
    ∀ (v : F),
      (Trivialization.coordChangeL R (trivializationAt F Z.Fiber b₀) (trivializationAt F Z.Fiber b₁) b) v =
        (Z.coordChange (Z.indexAt b₀) (Z.indexAt b₁) b) v