Step
*
1
1
of Lemma
fset-null_wf
1. T : Type
2. v : T List
3. v1 : T List
4. set-equal(T;v1;v)
ā¢ null(v1) = null(v)
BY
{ (D -2
THEN D 2
THEN Reduce 0
THEN Auto
THEN UnfoldTopAb (-1)
THEN InstHyp [āuā] (-1)ā
THEN Auto
THEN OnMaybeHyp 5 (\h. (D h THEN Complete (Auto)))) }
Latex:
Latex:
1. T : Type
2. v : T List
3. v1 : T List
4. set-equal(T;v1;v)
\mvdash{} null(v1) = null(v)
By
Latex:
(D -2
THEN D 2
THEN Reduce 0
THEN Auto
THEN UnfoldTopAb (-1)
THEN InstHyp [\mkleeneopen{}u\mkleeneclose{}] (-1)\mcdot{}
THEN Auto
THEN OnMaybeHyp 5 (\mbackslash{}h. (D h THEN Complete (Auto))))
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