Step
*
1
1
1
of Lemma
partition-split-cons-mesh
.....antecedent.....
1. I : Interval
2. icompact(I)
3. a : ℝ
4. bs : ℝ List
5. partitions(I;[a / bs])
6. partitions([left-endpoint(I), a];[])
7. partitions([a, right-endpoint(I)];bs)
8. partitions([left-endpoint(I), a];[])
9. partitions([a, right-endpoint(I)];bs)
10. left-endpoint(I) ≤ a
11. sorted-by(λx,y. (x ≤ y);[a / bs])
⊢ a ≤ last([a / bs])
BY
{ (With ⌜||bs||⌝ (D (-1))⋅ THENA Auto) }
1
1. I : Interval
2. icompact(I)
3. a : ℝ
4. bs : ℝ List
5. partitions(I;[a / bs])
6. partitions([left-endpoint(I), a];[])
7. partitions([a, right-endpoint(I)];bs)
8. partitions([left-endpoint(I), a];[])
9. partitions([a, right-endpoint(I)];bs)
10. left-endpoint(I) ≤ a
11. ∀j:ℕ||bs||. ((λx,y. (x ≤ y)) [a / bs][j] [a / bs][||bs||])
⊢ a ≤ last([a / bs])
Latex:
Latex:
.....antecedent.....
1. I : Interval
2. icompact(I)
3. a : \mBbbR{}
4. bs : \mBbbR{} List
5. partitions(I;[a / bs])
6. partitions([left-endpoint(I), a];[])
7. partitions([a, right-endpoint(I)];bs)
8. partitions([left-endpoint(I), a];[])
9. partitions([a, right-endpoint(I)];bs)
10. left-endpoint(I) \mleq{} a
11. sorted-by(\mlambda{}x,y. (x \mleq{} y);[a / bs])
\mvdash{} a \mleq{} last([a / bs])
By
Latex:
(With \mkleeneopen{}||bs||\mkleeneclose{} (D (-1))\mcdot{} THENA Auto)
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