Step
*
1
1
of Lemma
list-eo-info-le-before
1. L : Top List@i
2. i : Id@i
3. e : E@i
⊢ firstn(e;L) @ [if e <z ||L|| then L[e] else hd(L) fi ] ~ firstn(e + 1;L)
BY
{ ((RWO "list-eo-E-sq" (-1) THENA Auto) THEN (Assert e < ||L|| BY (D -1 THEN RW assert_pushdownC (-1) THEN Auto))) }
1
1. L : Top List@i
2. i : Id@i
3. e : {e:ℕ| ↑e <z ||L||} @i
4. e < ||L||
⊢ firstn(e;L) @ [if e <z ||L|| then L[e] else hd(L) fi ] ~ firstn(e + 1;L)
Latex:
Latex:
1. L : Top List@i
2. i : Id@i
3. e : E@i
\mvdash{} firstn(e;L) @ [if e <z ||L|| then L[e] else hd(L) fi ] \msim{} firstn(e + 1;L)
By
Latex:
((RWO "list-eo-E-sq" (-1) THENA Auto)
THEN (Assert e < ||L|| BY
(D -1 THEN RW assert\_pushdownC (-1) THEN Auto))
)
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