| Step | Hyp | Ref
| Expression |
| 1 | | vex 3468 |
. . . . . . . 8
⊢ 𝑤 ∈ V |
| 2 | | oveq2 7418 |
. . . . . . . . . . 11
⊢ (𝑣 = 𝑏 → (𝐴 · 𝑣) = (𝐴 · 𝑏)) |
| 3 | 2 | eqeq2d 2747 |
. . . . . . . . . 10
⊢ (𝑣 = 𝑏 → (𝑧 = (𝐴 · 𝑣) ↔ 𝑧 = (𝐴 · 𝑏))) |
| 4 | 3 | cbvrexvw 3225 |
. . . . . . . . 9
⊢
(∃𝑣 ∈
𝐵 𝑧 = (𝐴 · 𝑣) ↔ ∃𝑏 ∈ 𝐵 𝑧 = (𝐴 · 𝑏)) |
| 5 | | eqeq1 2740 |
. . . . . . . . . 10
⊢ (𝑧 = 𝑤 → (𝑧 = (𝐴 · 𝑏) ↔ 𝑤 = (𝐴 · 𝑏))) |
| 6 | 5 | rexbidv 3165 |
. . . . . . . . 9
⊢ (𝑧 = 𝑤 → (∃𝑏 ∈ 𝐵 𝑧 = (𝐴 · 𝑏) ↔ ∃𝑏 ∈ 𝐵 𝑤 = (𝐴 · 𝑏))) |
| 7 | 4, 6 | bitrid 283 |
. . . . . . . 8
⊢ (𝑧 = 𝑤 → (∃𝑣 ∈ 𝐵 𝑧 = (𝐴 · 𝑣) ↔ ∃𝑏 ∈ 𝐵 𝑤 = (𝐴 · 𝑏))) |
| 8 | | supmul1.1 |
. . . . . . . 8
⊢ 𝐶 = {𝑧 ∣ ∃𝑣 ∈ 𝐵 𝑧 = (𝐴 · 𝑣)} |
| 9 | 1, 7, 8 | elab2 3666 |
. . . . . . 7
⊢ (𝑤 ∈ 𝐶 ↔ ∃𝑏 ∈ 𝐵 𝑤 = (𝐴 · 𝑏)) |
| 10 | | supmul1.2 |
. . . . . . . . . . . . 13
⊢ (𝜑 ↔ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴 ∧ ∀𝑥 ∈ 𝐵 0 ≤ 𝑥) ∧ (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥))) |
| 11 | | simpr 484 |
. . . . . . . . . . . . 13
⊢ (((𝐴 ∈ ℝ ∧ 0 ≤
𝐴 ∧ ∀𝑥 ∈ 𝐵 0 ≤ 𝑥) ∧ (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)) → (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)) |
| 12 | 10, 11 | sylbi 217 |
. . . . . . . . . . . 12
⊢ (𝜑 → (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)) |
| 13 | 12 | simp1d 1142 |
. . . . . . . . . . 11
⊢ (𝜑 → 𝐵 ⊆ ℝ) |
| 14 | 13 | sselda 3963 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 𝑏 ∈ ℝ) |
| 15 | | suprcl 12207 |
. . . . . . . . . . . 12
⊢ ((𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥) → sup(𝐵, ℝ, < ) ∈
ℝ) |
| 16 | 12, 15 | syl 17 |
. . . . . . . . . . 11
⊢ (𝜑 → sup(𝐵, ℝ, < ) ∈
ℝ) |
| 17 | 16 | adantr 480 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → sup(𝐵, ℝ, < ) ∈
ℝ) |
| 18 | | simpl1 1192 |
. . . . . . . . . . . . 13
⊢ (((𝐴 ∈ ℝ ∧ 0 ≤
𝐴 ∧ ∀𝑥 ∈ 𝐵 0 ≤ 𝑥) ∧ (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)) → 𝐴 ∈ ℝ) |
| 19 | 10, 18 | sylbi 217 |
. . . . . . . . . . . 12
⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 20 | | simpl2 1193 |
. . . . . . . . . . . . 13
⊢ (((𝐴 ∈ ℝ ∧ 0 ≤
𝐴 ∧ ∀𝑥 ∈ 𝐵 0 ≤ 𝑥) ∧ (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)) → 0 ≤ 𝐴) |
| 21 | 10, 20 | sylbi 217 |
. . . . . . . . . . . 12
⊢ (𝜑 → 0 ≤ 𝐴) |
| 22 | 19, 21 | jca 511 |
. . . . . . . . . . 11
⊢ (𝜑 → (𝐴 ∈ ℝ ∧ 0 ≤ 𝐴)) |
| 23 | 22 | adantr 480 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → (𝐴 ∈ ℝ ∧ 0 ≤ 𝐴)) |
| 24 | | suprub 12208 |
. . . . . . . . . . 11
⊢ (((𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥) ∧ 𝑏 ∈ 𝐵) → 𝑏 ≤ sup(𝐵, ℝ, < )) |
| 25 | 12, 24 | sylan 580 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 𝑏 ≤ sup(𝐵, ℝ, < )) |
| 26 | | lemul2a 12101 |
. . . . . . . . . 10
⊢ (((𝑏 ∈ ℝ ∧ sup(𝐵, ℝ, < ) ∈ ℝ
∧ (𝐴 ∈ ℝ
∧ 0 ≤ 𝐴)) ∧
𝑏 ≤ sup(𝐵, ℝ, < )) → (𝐴 · 𝑏) ≤ (𝐴 · sup(𝐵, ℝ, < ))) |
| 27 | 14, 17, 23, 25, 26 | syl31anc 1375 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → (𝐴 · 𝑏) ≤ (𝐴 · sup(𝐵, ℝ, < ))) |
| 28 | | breq1 5127 |
. . . . . . . . 9
⊢ (𝑤 = (𝐴 · 𝑏) → (𝑤 ≤ (𝐴 · sup(𝐵, ℝ, < )) ↔ (𝐴 · 𝑏) ≤ (𝐴 · sup(𝐵, ℝ, < )))) |
| 29 | 27, 28 | syl5ibrcom 247 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → (𝑤 = (𝐴 · 𝑏) → 𝑤 ≤ (𝐴 · sup(𝐵, ℝ, < )))) |
| 30 | 29 | rexlimdva 3142 |
. . . . . . 7
⊢ (𝜑 → (∃𝑏 ∈ 𝐵 𝑤 = (𝐴 · 𝑏) → 𝑤 ≤ (𝐴 · sup(𝐵, ℝ, < )))) |
| 31 | 9, 30 | biimtrid 242 |
. . . . . 6
⊢ (𝜑 → (𝑤 ∈ 𝐶 → 𝑤 ≤ (𝐴 · sup(𝐵, ℝ, < )))) |
| 32 | 31 | ralrimiv 3132 |
. . . . 5
⊢ (𝜑 → ∀𝑤 ∈ 𝐶 𝑤 ≤ (𝐴 · sup(𝐵, ℝ, < ))) |
| 33 | 19 | adantr 480 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 𝐴 ∈ ℝ) |
| 34 | 33, 14 | remulcld 11270 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → (𝐴 · 𝑏) ∈ ℝ) |
| 35 | | eleq1a 2830 |
. . . . . . . . . . 11
⊢ ((𝐴 · 𝑏) ∈ ℝ → (𝑤 = (𝐴 · 𝑏) → 𝑤 ∈ ℝ)) |
| 36 | 34, 35 | syl 17 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → (𝑤 = (𝐴 · 𝑏) → 𝑤 ∈ ℝ)) |
| 37 | 36 | rexlimdva 3142 |
. . . . . . . . 9
⊢ (𝜑 → (∃𝑏 ∈ 𝐵 𝑤 = (𝐴 · 𝑏) → 𝑤 ∈ ℝ)) |
| 38 | 9, 37 | biimtrid 242 |
. . . . . . . 8
⊢ (𝜑 → (𝑤 ∈ 𝐶 → 𝑤 ∈ ℝ)) |
| 39 | 38 | ssrdv 3969 |
. . . . . . 7
⊢ (𝜑 → 𝐶 ⊆ ℝ) |
| 40 | | simpr2 1196 |
. . . . . . . . . 10
⊢ (((𝐴 ∈ ℝ ∧ 0 ≤
𝐴 ∧ ∀𝑥 ∈ 𝐵 0 ≤ 𝑥) ∧ (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)) → 𝐵 ≠ ∅) |
| 41 | 10, 40 | sylbi 217 |
. . . . . . . . 9
⊢ (𝜑 → 𝐵 ≠ ∅) |
| 42 | | ovex 7443 |
. . . . . . . . . . 11
⊢ (𝐴 · 𝑏) ∈ V |
| 43 | 42 | isseti 3482 |
. . . . . . . . . 10
⊢
∃𝑤 𝑤 = (𝐴 · 𝑏) |
| 44 | 43 | rgenw 3056 |
. . . . . . . . 9
⊢
∀𝑏 ∈
𝐵 ∃𝑤 𝑤 = (𝐴 · 𝑏) |
| 45 | | r19.2z 4475 |
. . . . . . . . 9
⊢ ((𝐵 ≠ ∅ ∧
∀𝑏 ∈ 𝐵 ∃𝑤 𝑤 = (𝐴 · 𝑏)) → ∃𝑏 ∈ 𝐵 ∃𝑤 𝑤 = (𝐴 · 𝑏)) |
| 46 | 41, 44, 45 | sylancl 586 |
. . . . . . . 8
⊢ (𝜑 → ∃𝑏 ∈ 𝐵 ∃𝑤 𝑤 = (𝐴 · 𝑏)) |
| 47 | 9 | exbii 1848 |
. . . . . . . . 9
⊢
(∃𝑤 𝑤 ∈ 𝐶 ↔ ∃𝑤∃𝑏 ∈ 𝐵 𝑤 = (𝐴 · 𝑏)) |
| 48 | | n0 4333 |
. . . . . . . . 9
⊢ (𝐶 ≠ ∅ ↔
∃𝑤 𝑤 ∈ 𝐶) |
| 49 | | rexcom4 3273 |
. . . . . . . . 9
⊢
(∃𝑏 ∈
𝐵 ∃𝑤 𝑤 = (𝐴 · 𝑏) ↔ ∃𝑤∃𝑏 ∈ 𝐵 𝑤 = (𝐴 · 𝑏)) |
| 50 | 47, 48, 49 | 3bitr4i 303 |
. . . . . . . 8
⊢ (𝐶 ≠ ∅ ↔
∃𝑏 ∈ 𝐵 ∃𝑤 𝑤 = (𝐴 · 𝑏)) |
| 51 | 46, 50 | sylibr 234 |
. . . . . . 7
⊢ (𝜑 → 𝐶 ≠ ∅) |
| 52 | 19, 16 | remulcld 11270 |
. . . . . . . 8
⊢ (𝜑 → (𝐴 · sup(𝐵, ℝ, < )) ∈
ℝ) |
| 53 | | brralrspcev 5184 |
. . . . . . . 8
⊢ (((𝐴 · sup(𝐵, ℝ, < )) ∈ ℝ ∧
∀𝑤 ∈ 𝐶 𝑤 ≤ (𝐴 · sup(𝐵, ℝ, < ))) → ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥) |
| 54 | 52, 32, 53 | syl2anc 584 |
. . . . . . 7
⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥) |
| 55 | 39, 51, 54 | 3jca 1128 |
. . . . . 6
⊢ (𝜑 → (𝐶 ⊆ ℝ ∧ 𝐶 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥)) |
| 56 | | suprleub 12213 |
. . . . . 6
⊢ (((𝐶 ⊆ ℝ ∧ 𝐶 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥) ∧ (𝐴 · sup(𝐵, ℝ, < )) ∈ ℝ) →
(sup(𝐶, ℝ, < )
≤ (𝐴 · sup(𝐵, ℝ, < )) ↔
∀𝑤 ∈ 𝐶 𝑤 ≤ (𝐴 · sup(𝐵, ℝ, < )))) |
| 57 | 55, 52, 56 | syl2anc 584 |
. . . . 5
⊢ (𝜑 → (sup(𝐶, ℝ, < ) ≤ (𝐴 · sup(𝐵, ℝ, < )) ↔ ∀𝑤 ∈ 𝐶 𝑤 ≤ (𝐴 · sup(𝐵, ℝ, < )))) |
| 58 | 32, 57 | mpbird 257 |
. . . 4
⊢ (𝜑 → sup(𝐶, ℝ, < ) ≤ (𝐴 · sup(𝐵, ℝ, < ))) |
| 59 | | simpr 484 |
. . . . . . 7
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) |
| 60 | | suprcl 12207 |
. . . . . . . . . 10
⊢ ((𝐶 ⊆ ℝ ∧ 𝐶 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥) → sup(𝐶, ℝ, < ) ∈
ℝ) |
| 61 | 55, 60 | syl 17 |
. . . . . . . . 9
⊢ (𝜑 → sup(𝐶, ℝ, < ) ∈
ℝ) |
| 62 | 61 | adantr 480 |
. . . . . . . 8
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → sup(𝐶, ℝ, < ) ∈
ℝ) |
| 63 | 16 | adantr 480 |
. . . . . . . 8
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → sup(𝐵, ℝ, < ) ∈
ℝ) |
| 64 | 19 | adantr 480 |
. . . . . . . 8
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → 𝐴 ∈ ℝ) |
| 65 | | n0 4333 |
. . . . . . . . . . . 12
⊢ (𝐵 ≠ ∅ ↔
∃𝑏 𝑏 ∈ 𝐵) |
| 66 | | 0red 11243 |
. . . . . . . . . . . . . . 15
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 0 ∈ ℝ) |
| 67 | | simpl3 1194 |
. . . . . . . . . . . . . . . . 17
⊢ (((𝐴 ∈ ℝ ∧ 0 ≤
𝐴 ∧ ∀𝑥 ∈ 𝐵 0 ≤ 𝑥) ∧ (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)) → ∀𝑥 ∈ 𝐵 0 ≤ 𝑥) |
| 68 | 10, 67 | sylbi 217 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → ∀𝑥 ∈ 𝐵 0 ≤ 𝑥) |
| 69 | | breq2 5128 |
. . . . . . . . . . . . . . . . 17
⊢ (𝑥 = 𝑏 → (0 ≤ 𝑥 ↔ 0 ≤ 𝑏)) |
| 70 | 69 | rspccva 3605 |
. . . . . . . . . . . . . . . 16
⊢
((∀𝑥 ∈
𝐵 0 ≤ 𝑥 ∧ 𝑏 ∈ 𝐵) → 0 ≤ 𝑏) |
| 71 | 68, 70 | sylan 580 |
. . . . . . . . . . . . . . 15
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 0 ≤ 𝑏) |
| 72 | 66, 14, 17, 71, 25 | letrd 11397 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 0 ≤ sup(𝐵, ℝ, < )) |
| 73 | 72 | ex 412 |
. . . . . . . . . . . . 13
⊢ (𝜑 → (𝑏 ∈ 𝐵 → 0 ≤ sup(𝐵, ℝ, < ))) |
| 74 | 73 | exlimdv 1933 |
. . . . . . . . . . . 12
⊢ (𝜑 → (∃𝑏 𝑏 ∈ 𝐵 → 0 ≤ sup(𝐵, ℝ, < ))) |
| 75 | 65, 74 | biimtrid 242 |
. . . . . . . . . . 11
⊢ (𝜑 → (𝐵 ≠ ∅ → 0 ≤ sup(𝐵, ℝ, <
))) |
| 76 | 41, 75 | mpd 15 |
. . . . . . . . . 10
⊢ (𝜑 → 0 ≤ sup(𝐵, ℝ, <
)) |
| 77 | 76 | adantr 480 |
. . . . . . . . 9
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → 0 ≤ sup(𝐵, ℝ, <
)) |
| 78 | | 0red 11243 |
. . . . . . . . . . . . . . . 16
⊢ ((𝜑 ∧ 𝑤 ∈ 𝐶) → 0 ∈ ℝ) |
| 79 | 38 | imp 406 |
. . . . . . . . . . . . . . . 16
⊢ ((𝜑 ∧ 𝑤 ∈ 𝐶) → 𝑤 ∈ ℝ) |
| 80 | 61 | adantr 480 |
. . . . . . . . . . . . . . . 16
⊢ ((𝜑 ∧ 𝑤 ∈ 𝐶) → sup(𝐶, ℝ, < ) ∈
ℝ) |
| 81 | 21 | adantr 480 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 0 ≤ 𝐴) |
| 82 | 33, 14, 81, 71 | mulge0d 11819 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 0 ≤ (𝐴 · 𝑏)) |
| 83 | | breq2 5128 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑤 = (𝐴 · 𝑏) → (0 ≤ 𝑤 ↔ 0 ≤ (𝐴 · 𝑏))) |
| 84 | 82, 83 | syl5ibrcom 247 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → (𝑤 = (𝐴 · 𝑏) → 0 ≤ 𝑤)) |
| 85 | 84 | rexlimdva 3142 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝜑 → (∃𝑏 ∈ 𝐵 𝑤 = (𝐴 · 𝑏) → 0 ≤ 𝑤)) |
| 86 | 9, 85 | biimtrid 242 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → (𝑤 ∈ 𝐶 → 0 ≤ 𝑤)) |
| 87 | 86 | imp 406 |
. . . . . . . . . . . . . . . 16
⊢ ((𝜑 ∧ 𝑤 ∈ 𝐶) → 0 ≤ 𝑤) |
| 88 | | suprub 12208 |
. . . . . . . . . . . . . . . . 17
⊢ (((𝐶 ⊆ ℝ ∧ 𝐶 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥) ∧ 𝑤 ∈ 𝐶) → 𝑤 ≤ sup(𝐶, ℝ, < )) |
| 89 | 55, 88 | sylan 580 |
. . . . . . . . . . . . . . . 16
⊢ ((𝜑 ∧ 𝑤 ∈ 𝐶) → 𝑤 ≤ sup(𝐶, ℝ, < )) |
| 90 | 78, 79, 80, 87, 89 | letrd 11397 |
. . . . . . . . . . . . . . 15
⊢ ((𝜑 ∧ 𝑤 ∈ 𝐶) → 0 ≤ sup(𝐶, ℝ, < )) |
| 91 | 90 | ex 412 |
. . . . . . . . . . . . . 14
⊢ (𝜑 → (𝑤 ∈ 𝐶 → 0 ≤ sup(𝐶, ℝ, < ))) |
| 92 | 91 | exlimdv 1933 |
. . . . . . . . . . . . 13
⊢ (𝜑 → (∃𝑤 𝑤 ∈ 𝐶 → 0 ≤ sup(𝐶, ℝ, < ))) |
| 93 | 48, 92 | biimtrid 242 |
. . . . . . . . . . . 12
⊢ (𝜑 → (𝐶 ≠ ∅ → 0 ≤ sup(𝐶, ℝ, <
))) |
| 94 | 51, 93 | mpd 15 |
. . . . . . . . . . 11
⊢ (𝜑 → 0 ≤ sup(𝐶, ℝ, <
)) |
| 95 | 94 | anim1i 615 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → (0 ≤ sup(𝐶, ℝ, < ) ∧
sup(𝐶, ℝ, < ) <
(𝐴 · sup(𝐵, ℝ, <
)))) |
| 96 | | 0red 11243 |
. . . . . . . . . . . 12
⊢ (𝜑 → 0 ∈
ℝ) |
| 97 | | lelttr 11330 |
. . . . . . . . . . . 12
⊢ ((0
∈ ℝ ∧ sup(𝐶,
ℝ, < ) ∈ ℝ ∧ (𝐴 · sup(𝐵, ℝ, < )) ∈ ℝ) →
((0 ≤ sup(𝐶, ℝ,
< ) ∧ sup(𝐶,
ℝ, < ) < (𝐴
· sup(𝐵, ℝ,
< ))) → 0 < (𝐴
· sup(𝐵, ℝ,
< )))) |
| 98 | 96, 61, 52, 97 | syl3anc 1373 |
. . . . . . . . . . 11
⊢ (𝜑 → ((0 ≤ sup(𝐶, ℝ, < ) ∧
sup(𝐶, ℝ, < ) <
(𝐴 · sup(𝐵, ℝ, < ))) → 0
< (𝐴 · sup(𝐵, ℝ, <
)))) |
| 99 | 98 | adantr 480 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → ((0 ≤
sup(𝐶, ℝ, < )
∧ sup(𝐶, ℝ, <
) < (𝐴 ·
sup(𝐵, ℝ, < )))
→ 0 < (𝐴 ·
sup(𝐵, ℝ, <
)))) |
| 100 | 95, 99 | mpd 15 |
. . . . . . . . 9
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → 0 < (𝐴 · sup(𝐵, ℝ, < ))) |
| 101 | | prodgt02 12094 |
. . . . . . . . 9
⊢ (((𝐴 ∈ ℝ ∧ sup(𝐵, ℝ, < ) ∈
ℝ) ∧ (0 ≤ sup(𝐵, ℝ, < ) ∧ 0 < (𝐴 · sup(𝐵, ℝ, < )))) → 0 < 𝐴) |
| 102 | 64, 63, 77, 100, 101 | syl22anc 838 |
. . . . . . . 8
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → 0 < 𝐴) |
| 103 | | ltdivmul 12122 |
. . . . . . . 8
⊢
((sup(𝐶, ℝ,
< ) ∈ ℝ ∧ sup(𝐵, ℝ, < ) ∈ ℝ ∧
(𝐴 ∈ ℝ ∧ 0
< 𝐴)) → ((sup(𝐶, ℝ, < ) / 𝐴) < sup(𝐵, ℝ, < ) ↔ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < )))) |
| 104 | 62, 63, 64, 102, 103 | syl112anc 1376 |
. . . . . . 7
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → ((sup(𝐶, ℝ, < ) / 𝐴) < sup(𝐵, ℝ, < ) ↔ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < )))) |
| 105 | 59, 104 | mpbird 257 |
. . . . . 6
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → (sup(𝐶, ℝ, < ) / 𝐴) < sup(𝐵, ℝ, < )) |
| 106 | 12 | adantr 480 |
. . . . . . 7
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)) |
| 107 | 102 | gt0ne0d 11806 |
. . . . . . . 8
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → 𝐴 ≠ 0) |
| 108 | 62, 64, 107 | redivcld 12074 |
. . . . . . 7
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → (sup(𝐶, ℝ, < ) / 𝐴) ∈
ℝ) |
| 109 | | suprlub 12211 |
. . . . . . 7
⊢ (((𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥) ∧ (sup(𝐶, ℝ, < ) / 𝐴) ∈ ℝ) → ((sup(𝐶, ℝ, < ) / 𝐴) < sup(𝐵, ℝ, < ) ↔ ∃𝑏 ∈ 𝐵 (sup(𝐶, ℝ, < ) / 𝐴) < 𝑏)) |
| 110 | 106, 108,
109 | syl2anc 584 |
. . . . . 6
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → ((sup(𝐶, ℝ, < ) / 𝐴) < sup(𝐵, ℝ, < ) ↔ ∃𝑏 ∈ 𝐵 (sup(𝐶, ℝ, < ) / 𝐴) < 𝑏)) |
| 111 | 105, 110 | mpbid 232 |
. . . . 5
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → ∃𝑏 ∈ 𝐵 (sup(𝐶, ℝ, < ) / 𝐴) < 𝑏) |
| 112 | 34 | adantlr 715 |
. . . . . . . 8
⊢ (((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) ∧ 𝑏 ∈ 𝐵) → (𝐴 · 𝑏) ∈ ℝ) |
| 113 | 61 | ad2antrr 726 |
. . . . . . . 8
⊢ (((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) ∧ 𝑏 ∈ 𝐵) → sup(𝐶, ℝ, < ) ∈
ℝ) |
| 114 | | rspe 3236 |
. . . . . . . . . . . . . . 15
⊢ ((𝑏 ∈ 𝐵 ∧ 𝑤 = (𝐴 · 𝑏)) → ∃𝑏 ∈ 𝐵 𝑤 = (𝐴 · 𝑏)) |
| 115 | 114, 9 | sylibr 234 |
. . . . . . . . . . . . . 14
⊢ ((𝑏 ∈ 𝐵 ∧ 𝑤 = (𝐴 · 𝑏)) → 𝑤 ∈ 𝐶) |
| 116 | 115 | adantl 481 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ (𝑏 ∈ 𝐵 ∧ 𝑤 = (𝐴 · 𝑏))) → 𝑤 ∈ 𝐶) |
| 117 | | simplrr 777 |
. . . . . . . . . . . . . 14
⊢ (((𝜑 ∧ (𝑏 ∈ 𝐵 ∧ 𝑤 = (𝐴 · 𝑏))) ∧ 𝑤 ∈ 𝐶) → 𝑤 = (𝐴 · 𝑏)) |
| 118 | 89 | adantlr 715 |
. . . . . . . . . . . . . 14
⊢ (((𝜑 ∧ (𝑏 ∈ 𝐵 ∧ 𝑤 = (𝐴 · 𝑏))) ∧ 𝑤 ∈ 𝐶) → 𝑤 ≤ sup(𝐶, ℝ, < )) |
| 119 | 117, 118 | eqbrtrrd 5148 |
. . . . . . . . . . . . 13
⊢ (((𝜑 ∧ (𝑏 ∈ 𝐵 ∧ 𝑤 = (𝐴 · 𝑏))) ∧ 𝑤 ∈ 𝐶) → (𝐴 · 𝑏) ≤ sup(𝐶, ℝ, < )) |
| 120 | 116, 119 | mpdan 687 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ (𝑏 ∈ 𝐵 ∧ 𝑤 = (𝐴 · 𝑏))) → (𝐴 · 𝑏) ≤ sup(𝐶, ℝ, < )) |
| 121 | 120 | expr 456 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → (𝑤 = (𝐴 · 𝑏) → (𝐴 · 𝑏) ≤ sup(𝐶, ℝ, < ))) |
| 122 | 121 | exlimdv 1933 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → (∃𝑤 𝑤 = (𝐴 · 𝑏) → (𝐴 · 𝑏) ≤ sup(𝐶, ℝ, < ))) |
| 123 | 43, 122 | mpi 20 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → (𝐴 · 𝑏) ≤ sup(𝐶, ℝ, < )) |
| 124 | 123 | adantlr 715 |
. . . . . . . 8
⊢ (((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) ∧ 𝑏 ∈ 𝐵) → (𝐴 · 𝑏) ≤ sup(𝐶, ℝ, < )) |
| 125 | 112, 113,
124 | lensymd 11391 |
. . . . . . 7
⊢ (((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) ∧ 𝑏 ∈ 𝐵) → ¬ sup(𝐶, ℝ, < ) < (𝐴 · 𝑏)) |
| 126 | 14 | adantlr 715 |
. . . . . . . 8
⊢ (((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) ∧ 𝑏 ∈ 𝐵) → 𝑏 ∈ ℝ) |
| 127 | 19 | ad2antrr 726 |
. . . . . . . 8
⊢ (((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) ∧ 𝑏 ∈ 𝐵) → 𝐴 ∈ ℝ) |
| 128 | 102 | adantr 480 |
. . . . . . . 8
⊢ (((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) ∧ 𝑏 ∈ 𝐵) → 0 < 𝐴) |
| 129 | | ltdivmul 12122 |
. . . . . . . 8
⊢
((sup(𝐶, ℝ,
< ) ∈ ℝ ∧ 𝑏 ∈ ℝ ∧ (𝐴 ∈ ℝ ∧ 0 < 𝐴)) → ((sup(𝐶, ℝ, < ) / 𝐴) < 𝑏 ↔ sup(𝐶, ℝ, < ) < (𝐴 · 𝑏))) |
| 130 | 113, 126,
127, 128, 129 | syl112anc 1376 |
. . . . . . 7
⊢ (((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) ∧ 𝑏 ∈ 𝐵) → ((sup(𝐶, ℝ, < ) / 𝐴) < 𝑏 ↔ sup(𝐶, ℝ, < ) < (𝐴 · 𝑏))) |
| 131 | 125, 130 | mtbird 325 |
. . . . . 6
⊢ (((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) ∧ 𝑏 ∈ 𝐵) → ¬ (sup(𝐶, ℝ, < ) / 𝐴) < 𝑏) |
| 132 | 131 | nrexdv 3136 |
. . . . 5
⊢ ((𝜑 ∧ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) → ¬
∃𝑏 ∈ 𝐵 (sup(𝐶, ℝ, < ) / 𝐴) < 𝑏) |
| 133 | 111, 132 | pm2.65da 816 |
. . . 4
⊢ (𝜑 → ¬ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))) |
| 134 | 58, 133 | jca 511 |
. . 3
⊢ (𝜑 → (sup(𝐶, ℝ, < ) ≤ (𝐴 · sup(𝐵, ℝ, < )) ∧ ¬ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < )))) |
| 135 | 61, 52 | eqleltd 11384 |
. . 3
⊢ (𝜑 → (sup(𝐶, ℝ, < ) = (𝐴 · sup(𝐵, ℝ, < )) ↔ (sup(𝐶, ℝ, < ) ≤ (𝐴 · sup(𝐵, ℝ, < )) ∧ ¬ sup(𝐶, ℝ, < ) < (𝐴 · sup(𝐵, ℝ, < ))))) |
| 136 | 134, 135 | mpbird 257 |
. 2
⊢ (𝜑 → sup(𝐶, ℝ, < ) = (𝐴 · sup(𝐵, ℝ, < ))) |
| 137 | 136 | eqcomd 2742 |
1
⊢ (𝜑 → (𝐴 · sup(𝐵, ℝ, < )) = sup(𝐶, ℝ, < )) |