Proof of Theorem lcvbr3
Step | Hyp | Ref
| Expression |
1 | | lcvfbr.s |
. . 3
⊢ 𝑆 = (LSubSp‘𝑊) |
2 | | lcvfbr.c |
. . 3
⊢ 𝐶 = ( ⋖L
‘𝑊) |
3 | | lcvfbr.w |
. . 3
⊢ (𝜑 → 𝑊 ∈ 𝑋) |
4 | | lcvfbr.t |
. . 3
⊢ (𝜑 → 𝑇 ∈ 𝑆) |
5 | | lcvfbr.u |
. . 3
⊢ (𝜑 → 𝑈 ∈ 𝑆) |
6 | 1, 2, 3, 4, 5 | lcvbr 36962 |
. 2
⊢ (𝜑 → (𝑇𝐶𝑈 ↔ (𝑇 ⊊ 𝑈 ∧ ¬ ∃𝑠 ∈ 𝑆 (𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈)))) |
7 | | iman 401 |
. . . . . 6
⊢ (((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) → (𝑠 = 𝑇 ∨ 𝑠 = 𝑈)) ↔ ¬ ((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) ∧ ¬ (𝑠 = 𝑇 ∨ 𝑠 = 𝑈))) |
8 | | df-pss 3902 |
. . . . . . . . 9
⊢ (𝑇 ⊊ 𝑠 ↔ (𝑇 ⊆ 𝑠 ∧ 𝑇 ≠ 𝑠)) |
9 | | necom 2996 |
. . . . . . . . . 10
⊢ (𝑇 ≠ 𝑠 ↔ 𝑠 ≠ 𝑇) |
10 | 9 | anbi2i 622 |
. . . . . . . . 9
⊢ ((𝑇 ⊆ 𝑠 ∧ 𝑇 ≠ 𝑠) ↔ (𝑇 ⊆ 𝑠 ∧ 𝑠 ≠ 𝑇)) |
11 | 8, 10 | bitri 274 |
. . . . . . . 8
⊢ (𝑇 ⊊ 𝑠 ↔ (𝑇 ⊆ 𝑠 ∧ 𝑠 ≠ 𝑇)) |
12 | | df-pss 3902 |
. . . . . . . 8
⊢ (𝑠 ⊊ 𝑈 ↔ (𝑠 ⊆ 𝑈 ∧ 𝑠 ≠ 𝑈)) |
13 | 11, 12 | anbi12i 626 |
. . . . . . 7
⊢ ((𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈) ↔ ((𝑇 ⊆ 𝑠 ∧ 𝑠 ≠ 𝑇) ∧ (𝑠 ⊆ 𝑈 ∧ 𝑠 ≠ 𝑈))) |
14 | | an4 652 |
. . . . . . . 8
⊢ (((𝑇 ⊆ 𝑠 ∧ 𝑠 ≠ 𝑇) ∧ (𝑠 ⊆ 𝑈 ∧ 𝑠 ≠ 𝑈)) ↔ ((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) ∧ (𝑠 ≠ 𝑇 ∧ 𝑠 ≠ 𝑈))) |
15 | | neanior 3036 |
. . . . . . . . 9
⊢ ((𝑠 ≠ 𝑇 ∧ 𝑠 ≠ 𝑈) ↔ ¬ (𝑠 = 𝑇 ∨ 𝑠 = 𝑈)) |
16 | 15 | anbi2i 622 |
. . . . . . . 8
⊢ (((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) ∧ (𝑠 ≠ 𝑇 ∧ 𝑠 ≠ 𝑈)) ↔ ((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) ∧ ¬ (𝑠 = 𝑇 ∨ 𝑠 = 𝑈))) |
17 | 14, 16 | bitri 274 |
. . . . . . 7
⊢ (((𝑇 ⊆ 𝑠 ∧ 𝑠 ≠ 𝑇) ∧ (𝑠 ⊆ 𝑈 ∧ 𝑠 ≠ 𝑈)) ↔ ((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) ∧ ¬ (𝑠 = 𝑇 ∨ 𝑠 = 𝑈))) |
18 | 13, 17 | bitri 274 |
. . . . . 6
⊢ ((𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈) ↔ ((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) ∧ ¬ (𝑠 = 𝑇 ∨ 𝑠 = 𝑈))) |
19 | 7, 18 | xchbinxr 334 |
. . . . 5
⊢ (((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) → (𝑠 = 𝑇 ∨ 𝑠 = 𝑈)) ↔ ¬ (𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈)) |
20 | 19 | ralbii 3090 |
. . . 4
⊢
(∀𝑠 ∈
𝑆 ((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) → (𝑠 = 𝑇 ∨ 𝑠 = 𝑈)) ↔ ∀𝑠 ∈ 𝑆 ¬ (𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈)) |
21 | | ralnex 3163 |
. . . 4
⊢
(∀𝑠 ∈
𝑆 ¬ (𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈) ↔ ¬ ∃𝑠 ∈ 𝑆 (𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈)) |
22 | 20, 21 | bitri 274 |
. . 3
⊢
(∀𝑠 ∈
𝑆 ((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) → (𝑠 = 𝑇 ∨ 𝑠 = 𝑈)) ↔ ¬ ∃𝑠 ∈ 𝑆 (𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈)) |
23 | 22 | anbi2i 622 |
. 2
⊢ ((𝑇 ⊊ 𝑈 ∧ ∀𝑠 ∈ 𝑆 ((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) → (𝑠 = 𝑇 ∨ 𝑠 = 𝑈))) ↔ (𝑇 ⊊ 𝑈 ∧ ¬ ∃𝑠 ∈ 𝑆 (𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈))) |
24 | 6, 23 | bitr4di 288 |
1
⊢ (𝜑 → (𝑇𝐶𝑈 ↔ (𝑇 ⊊ 𝑈 ∧ ∀𝑠 ∈ 𝑆 ((𝑇 ⊆ 𝑠 ∧ 𝑠 ⊆ 𝑈) → (𝑠 = 𝑇 ∨ 𝑠 = 𝑈))))) |