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At: surj is inj gen 1 1 1 1 2 1 1 1 1 1

1. A: Type
2. B: Type
3. f: AB
4. f1: AB
5. g: BA
6. InvFuns(A; B; f1; g)
7. n:
8. f2: nB
9. g1: Bn
10. InvFuns(n; B; f2; g1)
11. Surj(A; B; f)
12. a1: A
13. a2: A
14. f(a1) = f(a2)

(g1 o f o g o f2)(g1(f1(a1))) = (g1 o f o g o f2)(g1(f1(a2)))

By: RWH add_composeC 0

Generated subgoal:

1 (g1 o f o g o f2 o g1)(f1(a1)) = (g1 o f o g o f2 o g1)(f1(a2))


About:
equalnatural_numberapplyuniversefunction