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At: bool is finite 1 1 1 2 1 1

1. b:

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

By: Decide (b = true)

Generated subgoals:

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


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existsnatural_numberequalboolapply
lambdaifthenelsebtruebfalse