Step of Proof: imin_wf 12,41

Inference at * 
Iof proof for Lemma imin wf:


  ab:. imin(a;b  
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 by ((Unfold `imin` 0) 
CollapseTHEN ((Auto_aux (first_nat 1:n) ((first_nat 1:n),(first_nat 3:n
C)) (first_tok :t) inil_term))) 
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C.


Definitionsimin(a;b), t  T, x:AB(x)
Lemmasle int wf, ifthenelse wf

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