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At: one one corr symm


A,B:Type. (A ~ B) (B ~ A)

By:
Unfold `one_one_corr` 0
THEN
GenExRepD


Generated subgoal:

11. A: Type
2. B: Type
3. f: AB
4. g: BA
5. InvFuns(A; B; f; g)
f:(BA), g:(AB). InvFuns(B; A; f; g)


About:
alluniverseimpliesexistsfunction