Step * 2 of Lemma int_add_grp_wf2

.....set predicate..... 
Inverse(|<ℤ+>|;*;e;~)
BY
((Eval ``inverse`` THEN Auto) }


Latex:


Latex:
.....set  predicate..... 
Inverse(|<\mBbbZ{}+>|;*;e;\msim{})


By


Latex:
((Eval  ``inverse``  0  )  THEN  Auto)




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