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At: bool is finite 1 1 1 2


Surj(2; ; n.if n=0 true else false fi)

By: Unfold `surject` 0

Generated subgoal:

1 b:. a:2. (n.if n=0 true else false fi)(a) = b


About:
natural_numberboollambdaifthenelsebtrue
bfalseallexistsequalapply