∀ {X : Type u_5} {Y : Type u_6} {Z : Type u_7} {f : X → Y → Z} {ta1 ta2 : TopologicalSpace X}
  {tb1 tb2 : TopologicalSpace Y} {tc1 : TopologicalSpace Z},
  (Continuous fun p => f p.1 p.2) → Continuous fun p => f p.1 p.2