Step
*
2
2
of Lemma
from-upto_wf
1. ∀d:ℕ. ∀n,m:ℤ. (((m - n) ≤ d)
⇒ ([n, m) ∈ {x:ℤ| (n ≤ x) ∧ x < m} List))
2. n : ℤ
3. m : ℤ
4. ¬(n ≤ m)
⊢ [n, m) ∈ {x:ℤ| (n ≤ x) ∧ x < m} List
BY
{ (RecUnfold `from-upto` 0 THEN AutoSplit) }
Latex:
Latex:
1. \mforall{}d:\mBbbN{}. \mforall{}n,m:\mBbbZ{}. (((m - n) \mleq{} d) {}\mRightarrow{} ([n, m) \mmember{} \{x:\mBbbZ{}| (n \mleq{} x) \mwedge{} x < m\} List))
2. n : \mBbbZ{}
3. m : \mBbbZ{}
4. \mneg{}(n \mleq{} m)
\mvdash{} [n, m) \mmember{} \{x:\mBbbZ{}| (n \mleq{} x) \mwedge{} x < m\} List
By
Latex:
(RecUnfold `from-upto` 0 THEN AutoSplit)
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