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Step * 1 of Lemma oal_mon_wf


1. a : LOSet@i'
2. b : AbDMon@i'
⊢ IsEqFun(|oal(a;b)|;=b)
BY
{ (Assert ⌜oal(a;b) ∈ DSet⌝⋅ THEN Auto THEN AddProperties (-1)⋅ THEN Auto)⋅ }

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Latex:

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Latex:

1.  a  :  LOSet@i'
2.  b  :  AbDMon@i'
\mvdash{}  IsEqFun(|oal(a;b)|;=\msubb{})


By

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Latex:
(Assert  \mkleeneopen{}oal(a;b)  \mmember{}  DSet\mkleeneclose{}\mcdot{}  THEN  Auto  THEN  AddProperties  (-1)\mcdot{}  THEN  Auto)\mcdot{}

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