Step
*
1
2
of Lemma
convex-comb_wf
1. x3 : ℝ
2. x4 : ℝ
3. x : ℝ
4. x3 ≤ x
5. x ≤ x4
6. y : ℝ
7. x3 ≤ y
8. y ≤ x4
9. r : ℝ
10. r0 ≤ r
11. s : ℝ
12. r0 ≤ s
13. r0 < (r + s)
14. x3 ≤ ((r * x) + (s * y)/r + s)
⊢ ((r * x) + (s * y)) ≤ ((r * x4) + (s * x4))
BY
{ ((Assert (r * x) ≤ (r * x4) BY
(nRMul ⌜r⌝ 5⋅ THEN Auto))
THEN (Assert (s * y) ≤ (s * x4) BY
(nRMul ⌜s⌝ 8⋅ THEN Auto))
THEN RWO "-1 -2" 0
THEN Auto) }
Latex:
Latex:
1. x3 : \mBbbR{}
2. x4 : \mBbbR{}
3. x : \mBbbR{}
4. x3 \mleq{} x
5. x \mleq{} x4
6. y : \mBbbR{}
7. x3 \mleq{} y
8. y \mleq{} x4
9. r : \mBbbR{}
10. r0 \mleq{} r
11. s : \mBbbR{}
12. r0 \mleq{} s
13. r0 < (r + s)
14. x3 \mleq{} ((r * x) + (s * y)/r + s)
\mvdash{} ((r * x) + (s * y)) \mleq{} ((r * x4) + (s * x4))
By
Latex:
((Assert (r * x) \mleq{} (r * x4) BY
(nRMul \mkleeneopen{}r\mkleeneclose{} 5\mcdot{} THEN Auto))
THEN (Assert (s * y) \mleq{} (s * x4) BY
(nRMul \mkleeneopen{}s\mkleeneclose{} 8\mcdot{} THEN Auto))
THEN RWO "-1 -2" 0
THEN Auto)
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