Step 
*
 of Lemma 
maname-deq_wf
maname-deq() ∈ EqDecider(MaName)
BY
 
{ (Unfolds ``maname-deq MaName`` 0 THEN Auto) }
 
Latex: 
maname-deq()  \mmember{}  EqDecider(MaName)
 By 
(Unfolds  ``maname-deq  MaName``  0  THEN  Auto)
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