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At: one one preser fin 1 1 1 1 1 1 2

1. T: Type
2. S: Type
3. n:
4. f: nT
5. Bij(n; T; f)
6. f1: TS
7. g: ST
8. g o f1 = Id
9. f1 o g = Id
10. b: S

a:n. (f1 o f)(a) = b

By: Analyze 5

Generated subgoal:

15. Inj(n; T; f)
6. Surj(n; T; f)
7. f1: TS
8. g: ST
9. g o f1 = Id
10. f1 o g = Id
11. b: S
a:n. (f1 o f)(a) = b


About:
existsnatural_numberequalapplyuniversefunction