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Description: Show that A is less than B by showing that there is no positive bound on the difference. A variant on xralrple . (Contributed by Glauco Siliprandi, 21-Nov-2020)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | xralrple2.x | ⊢ Ⅎ 𝑥 𝜑 | |
| xralrple2.a | ⊢ ( 𝜑 → 𝐴 ∈ ℝ* ) | ||
| xralrple2.b | ⊢ ( 𝜑 → 𝐵 ∈ ( 0 [,) +∞ ) ) | ||
| Assertion | xralrple2 | ⊢ ( 𝜑 → ( 𝐴 ≤ 𝐵 ↔ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xralrple2.x | ⊢ Ⅎ 𝑥 𝜑 | |
| 2 | xralrple2.a | ⊢ ( 𝜑 → 𝐴 ∈ ℝ* ) | |
| 3 | xralrple2.b | ⊢ ( 𝜑 → 𝐵 ∈ ( 0 [,) +∞ ) ) | |
| 4 | nfv | ⊢ Ⅎ 𝑥 𝐴 ≤ 𝐵 | |
| 5 | 1 4 | nfan | ⊢ Ⅎ 𝑥 ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) |
| 6 | 2 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → 𝐴 ∈ ℝ* ) |
| 7 | icossxr | ⊢ ( 0 [,) +∞ ) ⊆ ℝ* | |
| 8 | 3 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → 𝐵 ∈ ( 0 [,) +∞ ) ) |
| 9 | 7 8 | sselid | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → 𝐵 ∈ ℝ* ) |
| 10 | 1red | ⊢ ( ( 𝜑 ∧ 𝑥 ∈ ℝ+ ) → 1 ∈ ℝ ) | |
| 11 | rpre | ⊢ ( 𝑥 ∈ ℝ+ → 𝑥 ∈ ℝ ) | |
| 12 | 11 | adantl | ⊢ ( ( 𝜑 ∧ 𝑥 ∈ ℝ+ ) → 𝑥 ∈ ℝ ) |
| 13 | 10 12 | readdcld | ⊢ ( ( 𝜑 ∧ 𝑥 ∈ ℝ+ ) → ( 1 + 𝑥 ) ∈ ℝ ) |
| 14 | rge0ssre | ⊢ ( 0 [,) +∞ ) ⊆ ℝ | |
| 15 | 14 3 | sselid | ⊢ ( 𝜑 → 𝐵 ∈ ℝ ) |
| 16 | 15 | adantr | ⊢ ( ( 𝜑 ∧ 𝑥 ∈ ℝ+ ) → 𝐵 ∈ ℝ ) |
| 17 | 13 16 | remulcld | ⊢ ( ( 𝜑 ∧ 𝑥 ∈ ℝ+ ) → ( ( 1 + 𝑥 ) · 𝐵 ) ∈ ℝ ) |
| 18 | 17 | rexrd | ⊢ ( ( 𝜑 ∧ 𝑥 ∈ ℝ+ ) → ( ( 1 + 𝑥 ) · 𝐵 ) ∈ ℝ* ) |
| 19 | 18 | adantlr | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → ( ( 1 + 𝑥 ) · 𝐵 ) ∈ ℝ* ) |
| 20 | simplr | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → 𝐴 ≤ 𝐵 ) | |
| 21 | 15 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → 𝐵 ∈ ℝ ) |
| 22 | 1red | ⊢ ( 𝑥 ∈ ℝ+ → 1 ∈ ℝ ) | |
| 23 | 22 11 | readdcld | ⊢ ( 𝑥 ∈ ℝ+ → ( 1 + 𝑥 ) ∈ ℝ ) |
| 24 | 23 | adantl | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → ( 1 + 𝑥 ) ∈ ℝ ) |
| 25 | 0xr | ⊢ 0 ∈ ℝ* | |
| 26 | 25 | a1i | ⊢ ( 𝐵 ∈ ( 0 [,) +∞ ) → 0 ∈ ℝ* ) |
| 27 | pnfxr | ⊢ +∞ ∈ ℝ* | |
| 28 | 27 | a1i | ⊢ ( 𝐵 ∈ ( 0 [,) +∞ ) → +∞ ∈ ℝ* ) |
| 29 | id | ⊢ ( 𝐵 ∈ ( 0 [,) +∞ ) → 𝐵 ∈ ( 0 [,) +∞ ) ) | |
| 30 | icogelb | ⊢ ( ( 0 ∈ ℝ* ∧ +∞ ∈ ℝ* ∧ 𝐵 ∈ ( 0 [,) +∞ ) ) → 0 ≤ 𝐵 ) | |
| 31 | 26 28 29 30 | syl3anc | ⊢ ( 𝐵 ∈ ( 0 [,) +∞ ) → 0 ≤ 𝐵 ) |
| 32 | 3 31 | syl | ⊢ ( 𝜑 → 0 ≤ 𝐵 ) |
| 33 | 32 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → 0 ≤ 𝐵 ) |
| 34 | id | ⊢ ( 𝑥 ∈ ℝ+ → 𝑥 ∈ ℝ+ ) | |
| 35 | 22 34 | ltaddrpd | ⊢ ( 𝑥 ∈ ℝ+ → 1 < ( 1 + 𝑥 ) ) |
| 36 | 22 23 35 | ltled | ⊢ ( 𝑥 ∈ ℝ+ → 1 ≤ ( 1 + 𝑥 ) ) |
| 37 | 36 | adantl | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → 1 ≤ ( 1 + 𝑥 ) ) |
| 38 | 21 24 33 37 | lemulge12d | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → 𝐵 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) |
| 39 | 6 9 19 20 38 | xrletrd | ⊢ ( ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) ∧ 𝑥 ∈ ℝ+ ) → 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) |
| 40 | 39 | ex | ⊢ ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) → ( 𝑥 ∈ ℝ+ → 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ) |
| 41 | 5 40 | ralrimi | ⊢ ( ( 𝜑 ∧ 𝐴 ≤ 𝐵 ) → ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) |
| 42 | 41 | ex | ⊢ ( 𝜑 → ( 𝐴 ≤ 𝐵 → ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ) |
| 43 | 2 | ad3antrrr | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 = 0 ) → 𝐴 ∈ ℝ* ) |
| 44 | id | ⊢ ( 𝐵 = 0 → 𝐵 = 0 ) | |
| 45 | 0red | ⊢ ( 𝐵 = 0 → 0 ∈ ℝ ) | |
| 46 | 44 45 | eqeltrd | ⊢ ( 𝐵 = 0 → 𝐵 ∈ ℝ ) |
| 47 | 46 | adantl | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → 𝐵 ∈ ℝ ) |
| 48 | rpre | ⊢ ( 𝑦 ∈ ℝ+ → 𝑦 ∈ ℝ ) | |
| 49 | 48 | adantr | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → 𝑦 ∈ ℝ ) |
| 50 | 47 49 | readdcld | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → ( 𝐵 + 𝑦 ) ∈ ℝ ) |
| 51 | 50 | rexrd | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → ( 𝐵 + 𝑦 ) ∈ ℝ* ) |
| 52 | 51 | adantll | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 = 0 ) → ( 𝐵 + 𝑦 ) ∈ ℝ* ) |
| 53 | 25 | a1i | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 = 0 ) → 0 ∈ ℝ* ) |
| 54 | 1rp | ⊢ 1 ∈ ℝ+ | |
| 55 | 54 | a1i | ⊢ ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) → 1 ∈ ℝ+ ) |
| 56 | id | ⊢ ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) → ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) | |
| 57 | oveq2 | ⊢ ( 𝑥 = 1 → ( 1 + 𝑥 ) = ( 1 + 1 ) ) | |
| 58 | 57 | oveq1d | ⊢ ( 𝑥 = 1 → ( ( 1 + 𝑥 ) · 𝐵 ) = ( ( 1 + 1 ) · 𝐵 ) ) |
| 59 | 58 | breq2d | ⊢ ( 𝑥 = 1 → ( 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ↔ 𝐴 ≤ ( ( 1 + 1 ) · 𝐵 ) ) ) |
| 60 | 59 | rspcva | ⊢ ( ( 1 ∈ ℝ+ ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) → 𝐴 ≤ ( ( 1 + 1 ) · 𝐵 ) ) |
| 61 | 55 56 60 | syl2anc | ⊢ ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) → 𝐴 ≤ ( ( 1 + 1 ) · 𝐵 ) ) |
| 62 | 1p1e2 | ⊢ ( 1 + 1 ) = 2 | |
| 63 | 62 | a1i | ⊢ ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) → ( 1 + 1 ) = 2 ) |
| 64 | 63 | oveq1d | ⊢ ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) → ( ( 1 + 1 ) · 𝐵 ) = ( 2 · 𝐵 ) ) |
| 65 | 61 64 | breqtrd | ⊢ ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) → 𝐴 ≤ ( 2 · 𝐵 ) ) |
| 66 | 65 | adantr | ⊢ ( ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ∧ 𝐵 = 0 ) → 𝐴 ≤ ( 2 · 𝐵 ) ) |
| 67 | simpr | ⊢ ( ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ∧ 𝐵 = 0 ) → 𝐵 = 0 ) | |
| 68 | simpl | ⊢ ( ( 𝐴 ≤ ( 2 · 𝐵 ) ∧ 𝐵 = 0 ) → 𝐴 ≤ ( 2 · 𝐵 ) ) | |
| 69 | oveq2 | ⊢ ( 𝐵 = 0 → ( 2 · 𝐵 ) = ( 2 · 0 ) ) | |
| 70 | 2cnd | ⊢ ( 𝐵 = 0 → 2 ∈ ℂ ) | |
| 71 | 70 | mul01d | ⊢ ( 𝐵 = 0 → ( 2 · 0 ) = 0 ) |
| 72 | 69 71 | eqtrd | ⊢ ( 𝐵 = 0 → ( 2 · 𝐵 ) = 0 ) |
| 73 | 72 | adantl | ⊢ ( ( 𝐴 ≤ ( 2 · 𝐵 ) ∧ 𝐵 = 0 ) → ( 2 · 𝐵 ) = 0 ) |
| 74 | 68 73 | breqtrd | ⊢ ( ( 𝐴 ≤ ( 2 · 𝐵 ) ∧ 𝐵 = 0 ) → 𝐴 ≤ 0 ) |
| 75 | 66 67 74 | syl2anc | ⊢ ( ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ∧ 𝐵 = 0 ) → 𝐴 ≤ 0 ) |
| 76 | 75 | ad4ant24 | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 = 0 ) → 𝐴 ≤ 0 ) |
| 77 | rpgt0 | ⊢ ( 𝑦 ∈ ℝ+ → 0 < 𝑦 ) | |
| 78 | 77 | adantr | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → 0 < 𝑦 ) |
| 79 | oveq1 | ⊢ ( 𝐵 = 0 → ( 𝐵 + 𝑦 ) = ( 0 + 𝑦 ) ) | |
| 80 | 79 | adantl | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → ( 𝐵 + 𝑦 ) = ( 0 + 𝑦 ) ) |
| 81 | 48 | recnd | ⊢ ( 𝑦 ∈ ℝ+ → 𝑦 ∈ ℂ ) |
| 82 | 81 | adantr | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → 𝑦 ∈ ℂ ) |
| 83 | 82 | addlidd | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → ( 0 + 𝑦 ) = 𝑦 ) |
| 84 | 80 83 | eqtr2d | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → 𝑦 = ( 𝐵 + 𝑦 ) ) |
| 85 | 78 84 | breqtrd | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 = 0 ) → 0 < ( 𝐵 + 𝑦 ) ) |
| 86 | 85 | adantll | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 = 0 ) → 0 < ( 𝐵 + 𝑦 ) ) |
| 87 | 43 53 52 76 86 | xrlelttrd | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 = 0 ) → 𝐴 < ( 𝐵 + 𝑦 ) ) |
| 88 | 43 52 87 | xrltled | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 = 0 ) → 𝐴 ≤ ( 𝐵 + 𝑦 ) ) |
| 89 | simpl | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ ¬ 𝐵 = 0 ) → ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ) | |
| 90 | 15 | adantr | ⊢ ( ( 𝜑 ∧ ¬ 𝐵 = 0 ) → 𝐵 ∈ ℝ ) |
| 91 | 0red | ⊢ ( ( 𝜑 ∧ ¬ 𝐵 = 0 ) → 0 ∈ ℝ ) | |
| 92 | 32 | adantr | ⊢ ( ( 𝜑 ∧ ¬ 𝐵 = 0 ) → 0 ≤ 𝐵 ) |
| 93 | 44 | necon3bi | ⊢ ( ¬ 𝐵 = 0 → 𝐵 ≠ 0 ) |
| 94 | 93 | adantl | ⊢ ( ( 𝜑 ∧ ¬ 𝐵 = 0 ) → 𝐵 ≠ 0 ) |
| 95 | 91 90 92 94 | leneltd | ⊢ ( ( 𝜑 ∧ ¬ 𝐵 = 0 ) → 0 < 𝐵 ) |
| 96 | 90 95 | elrpd | ⊢ ( ( 𝜑 ∧ ¬ 𝐵 = 0 ) → 𝐵 ∈ ℝ+ ) |
| 97 | 96 | ad4ant14 | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ ¬ 𝐵 = 0 ) → 𝐵 ∈ ℝ+ ) |
| 98 | simplr | ⊢ ( ( ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 ∈ ℝ+ ) → 𝑦 ∈ ℝ+ ) | |
| 99 | simpr | ⊢ ( ( ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 ∈ ℝ+ ) → 𝐵 ∈ ℝ+ ) | |
| 100 | 98 99 | rpdivcld | ⊢ ( ( ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 ∈ ℝ+ ) → ( 𝑦 / 𝐵 ) ∈ ℝ+ ) |
| 101 | simpll | ⊢ ( ( ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 ∈ ℝ+ ) → ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) | |
| 102 | oveq2 | ⊢ ( 𝑥 = ( 𝑦 / 𝐵 ) → ( 1 + 𝑥 ) = ( 1 + ( 𝑦 / 𝐵 ) ) ) | |
| 103 | 102 | oveq1d | ⊢ ( 𝑥 = ( 𝑦 / 𝐵 ) → ( ( 1 + 𝑥 ) · 𝐵 ) = ( ( 1 + ( 𝑦 / 𝐵 ) ) · 𝐵 ) ) |
| 104 | 103 | breq2d | ⊢ ( 𝑥 = ( 𝑦 / 𝐵 ) → ( 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ↔ 𝐴 ≤ ( ( 1 + ( 𝑦 / 𝐵 ) ) · 𝐵 ) ) ) |
| 105 | 104 | rspcva | ⊢ ( ( ( 𝑦 / 𝐵 ) ∈ ℝ+ ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) → 𝐴 ≤ ( ( 1 + ( 𝑦 / 𝐵 ) ) · 𝐵 ) ) |
| 106 | 100 101 105 | syl2anc | ⊢ ( ( ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 ∈ ℝ+ ) → 𝐴 ≤ ( ( 1 + ( 𝑦 / 𝐵 ) ) · 𝐵 ) ) |
| 107 | 106 | adantlll | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 ∈ ℝ+ ) → 𝐴 ≤ ( ( 1 + ( 𝑦 / 𝐵 ) ) · 𝐵 ) ) |
| 108 | 1cnd | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → 1 ∈ ℂ ) | |
| 109 | 81 | adantr | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → 𝑦 ∈ ℂ ) |
| 110 | rpcn | ⊢ ( 𝐵 ∈ ℝ+ → 𝐵 ∈ ℂ ) | |
| 111 | 110 | adantl | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → 𝐵 ∈ ℂ ) |
| 112 | rpne0 | ⊢ ( 𝐵 ∈ ℝ+ → 𝐵 ≠ 0 ) | |
| 113 | 112 | adantl | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → 𝐵 ≠ 0 ) |
| 114 | 109 111 113 | divcld | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → ( 𝑦 / 𝐵 ) ∈ ℂ ) |
| 115 | 108 114 111 | adddird | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → ( ( 1 + ( 𝑦 / 𝐵 ) ) · 𝐵 ) = ( ( 1 · 𝐵 ) + ( ( 𝑦 / 𝐵 ) · 𝐵 ) ) ) |
| 116 | 111 | mullidd | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → ( 1 · 𝐵 ) = 𝐵 ) |
| 117 | 109 111 113 | divcan1d | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → ( ( 𝑦 / 𝐵 ) · 𝐵 ) = 𝑦 ) |
| 118 | 116 117 | oveq12d | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → ( ( 1 · 𝐵 ) + ( ( 𝑦 / 𝐵 ) · 𝐵 ) ) = ( 𝐵 + 𝑦 ) ) |
| 119 | eqidd | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → ( 𝐵 + 𝑦 ) = ( 𝐵 + 𝑦 ) ) | |
| 120 | 115 118 119 | 3eqtrd | ⊢ ( ( 𝑦 ∈ ℝ+ ∧ 𝐵 ∈ ℝ+ ) → ( ( 1 + ( 𝑦 / 𝐵 ) ) · 𝐵 ) = ( 𝐵 + 𝑦 ) ) |
| 121 | 120 | adantll | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 ∈ ℝ+ ) → ( ( 1 + ( 𝑦 / 𝐵 ) ) · 𝐵 ) = ( 𝐵 + 𝑦 ) ) |
| 122 | 107 121 | breqtrd | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ 𝐵 ∈ ℝ+ ) → 𝐴 ≤ ( 𝐵 + 𝑦 ) ) |
| 123 | 89 97 122 | syl2anc | ⊢ ( ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) ∧ ¬ 𝐵 = 0 ) → 𝐴 ≤ ( 𝐵 + 𝑦 ) ) |
| 124 | 88 123 | pm2.61dan | ⊢ ( ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ∧ 𝑦 ∈ ℝ+ ) → 𝐴 ≤ ( 𝐵 + 𝑦 ) ) |
| 125 | 124 | ralrimiva | ⊢ ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) → ∀ 𝑦 ∈ ℝ+ 𝐴 ≤ ( 𝐵 + 𝑦 ) ) |
| 126 | xralrple | ⊢ ( ( 𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ ) → ( 𝐴 ≤ 𝐵 ↔ ∀ 𝑦 ∈ ℝ+ 𝐴 ≤ ( 𝐵 + 𝑦 ) ) ) | |
| 127 | 2 15 126 | syl2anc | ⊢ ( 𝜑 → ( 𝐴 ≤ 𝐵 ↔ ∀ 𝑦 ∈ ℝ+ 𝐴 ≤ ( 𝐵 + 𝑦 ) ) ) |
| 128 | 127 | adantr | ⊢ ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) → ( 𝐴 ≤ 𝐵 ↔ ∀ 𝑦 ∈ ℝ+ 𝐴 ≤ ( 𝐵 + 𝑦 ) ) ) |
| 129 | 125 128 | mpbird | ⊢ ( ( 𝜑 ∧ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) → 𝐴 ≤ 𝐵 ) |
| 130 | 129 | ex | ⊢ ( 𝜑 → ( ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) → 𝐴 ≤ 𝐵 ) ) |
| 131 | 42 130 | impbid | ⊢ ( 𝜑 → ( 𝐴 ≤ 𝐵 ↔ ∀ 𝑥 ∈ ℝ+ 𝐴 ≤ ( ( 1 + 𝑥 ) · 𝐵 ) ) ) |