∀ {𝕜 : Type u_1} {inst : NontriviallyNormedField 𝕜} {E : Type u_2} {inst_1 : NormedAddCommGroup E}
  {inst_2 : NormedSpace 𝕜 E} {H : Type u_3} {inst_3 : TopologicalSpace H} {x y : ModelWithCorners 𝕜 E H},
  ↑x.toPartialEquiv = ↑y.toPartialEquiv → x.invFun = y.invFun → x.source = y.source → x.target = y.target → x = y