Step
*
2
of Lemma
max-metric-mdist-from-zero
1. c : {c:ℝ| r0 ≤ c}
2. n : ℤ
3. 0 < n
4. x : ℝ^n
5. ∀i:ℕn - 1. ((-(c) ≤ (x i)) ∧ ((x i) ≤ c))
6. (r0 - c) ≤ (x (n - 1))
7. (x (n - 1)) ≤ (r0 + c)
8. i : ℕn
9. primrec(n - 1;r0;λi,r. rmax(r;|(x i) - r0|)) ≤ c
10. ∀i:ℕn - 1. ((-(c) ≤ (x i)) ∧ ((x i) ≤ c))
⊢ (x i) ≤ c
BY
{ (Decide ⌜i < n - 1⌝⋅ THEN Auto THEN Subst' i ~ n - 1 0 THEN Auto) }
Latex:
Latex:
1. c : \{c:\mBbbR{}| r0 \mleq{} c\}
2. n : \mBbbZ{}
3. 0 < n
4. x : \mBbbR{}\^{}n
5. \mforall{}i:\mBbbN{}n - 1. ((-(c) \mleq{} (x i)) \mwedge{} ((x i) \mleq{} c))
6. (r0 - c) \mleq{} (x (n - 1))
7. (x (n - 1)) \mleq{} (r0 + c)
8. i : \mBbbN{}n
9. primrec(n - 1;r0;\mlambda{}i,r. rmax(r;|(x i) - r0|)) \mleq{} c
10. \mforall{}i:\mBbbN{}n - 1. ((-(c) \mleq{} (x i)) \mwedge{} ((x i) \mleq{} c))
\mvdash{} (x i) \mleq{} c
By
Latex:
(Decide \mkleeneopen{}i < n - 1\mkleeneclose{}\mcdot{} THEN Auto THEN Subst' i \msim{} n - 1 0 THEN Auto)
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