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916823d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | import Mathlib
open CategoryTheory Topology
namespace CAT_statement_S_0033
structure FullCoreflectiveSubcategory (C : Type u) [Category.{v} C] where
obj : ObjectProperty C
iso_closed : obj.IsClosedUnderIsomorphisms
coreflective : Coreflective obj.ι
theorem CompHaus_has_precisely_two_coreflective_subcategories :
Nat.card (FullCoreflectiveSubcategory CompHaus) = 2 := by
sorry
end CAT_statement_S_0033
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