Step of Proof: int_seg_properties 9,38

Inference at * 
Iof proof for Lemma int seg properties:


  i,j:y:{i..j}. i  y < j 
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 by ProvePropertiesLemma 
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 .


DefinitionsTrue, T, t  T, P  Q, , i  j < k, x:AB(x), P  Q, SqStable(P), {i..j}
Lemmasint seg wf, decidable lt, decidable le, sq stable from decidable, le wf, sq stable and

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