Step
*
of Lemma
set-item-mem
∀s:coSet{i:l}. ∀x:set-dom(s). (set-item(s;x) ∈ s)
BY
{ (Auto THEN (RWO "setmem-iff" 0 THEN Auto) THEN D 0 With ⌜x⌝ THEN Auto) }
1
1. s : coSet{i:l}
2. x : set-dom(s)
⊢ seteq(set-item(s;x);set-item(s;x))
Latex:
Latex:
\mforall{}s:coSet\{i:l\}. \mforall{}x:set-dom(s). (set-item(s;x) \mmember{} s)
By
Latex:
(Auto THEN (RWO "setmem-iff" 0 THEN Auto) THEN D 0 With \mkleeneopen{}x\mkleeneclose{} THEN Auto)
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