English
The pullback topology is equal to the canonical pullback topology defined via the construction.
Русский
Топология pullback равна канонической топологии pullback, определяемой через конструкцию.
LaTeX
$$$\mathrm{pullbackTopology\ F\ E\ f} = \mathrm{Pullback.TotalSpace.topologicalSpace}\ F\ E\ f$$$
Lean4
/-- The topology on the total space of a pullback bundle is the coarsest topology for which both
the projections to the base and the map to the original bundle are continuous. -/
instance topologicalSpace : TopologicalSpace (TotalSpace F (f *ᵖ E)) :=
pullbackTopology F E f