Step
*
1
1
of Lemma
insert-int-lex
1. u : ℤ
2. v : ℤ List
3. ∀x:ℤ. ((↑[] ≤_lex v)
⇒ (↑insert-int(x;[]) ≤_lex insert-int(x;v)))
4. x : ℤ
5. ↑[] ≤_lex [u / v]
6. u < x
⊢ ||[x]|| < ||[u / insert-int(x;v)]||
BY
{ (Reduce 0 THEN RWO "length-insert-int" 0 THEN Auto) }
Latex:
Latex:
1. u : \mBbbZ{}
2. v : \mBbbZ{} List
3. \mforall{}x:\mBbbZ{}. ((\muparrow{}[] \mleq{}\_lex v) {}\mRightarrow{} (\muparrow{}insert-int(x;[]) \mleq{}\_lex insert-int(x;v)))
4. x : \mBbbZ{}
5. \muparrow{}[] \mleq{}\_lex [u / v]
6. u < x
\mvdash{} ||[x]|| < ||[u / insert-int(x;v)]||
By
Latex:
(Reduce 0 THEN RWO "length-insert-int" 0 THEN Auto)
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