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At: finite decidable subset 1

1. T: Type
2. B: TProp
3. Fin(T)
4. t:T. Dec(B(t))

Fin({t:T| B(t) })

By: Analyze 3

Generated subgoal:

13. n:
4. f:(nT). Bij(n; T; f)
5. t:T. Dec(B(t))
Fin({t:T| B(t) })


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