Proof of Theorem 5oalem1
Step | Hyp | Ref
| Expression |
1 | | simplll 771 |
. . . 4
⊢ ((((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) ∧ (𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅)) → 𝑥 ∈ 𝐴) |
2 | | 5oalem1.1 |
. . . . . . . 8
⊢ 𝐴 ∈
Sℋ |
3 | 2 | sheli 28918 |
. . . . . . 7
⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ ℋ) |
4 | 3 | ad2antrr 722 |
. . . . . 6
⊢ (((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) → 𝑥 ∈ ℋ) |
5 | | 5oalem1.3 |
. . . . . . . 8
⊢ 𝐶 ∈
Sℋ |
6 | 5 | sheli 28918 |
. . . . . . 7
⊢ (𝑧 ∈ 𝐶 → 𝑧 ∈ ℋ) |
7 | 6 | adantr 481 |
. . . . . 6
⊢ ((𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅) → 𝑧 ∈ ℋ) |
8 | | hvaddsub12 28742 |
. . . . . . . 8
⊢ ((𝑥 ∈ ℋ ∧ 𝑧 ∈ ℋ ∧ 𝑧 ∈ ℋ) → (𝑥 +ℎ (𝑧 −ℎ
𝑧)) = (𝑧 +ℎ (𝑥 −ℎ 𝑧))) |
9 | 8 | 3anidm23 1413 |
. . . . . . 7
⊢ ((𝑥 ∈ ℋ ∧ 𝑧 ∈ ℋ) → (𝑥 +ℎ (𝑧 −ℎ
𝑧)) = (𝑧 +ℎ (𝑥 −ℎ 𝑧))) |
10 | | hvsubid 28730 |
. . . . . . . . 9
⊢ (𝑧 ∈ ℋ → (𝑧 −ℎ
𝑧) =
0ℎ) |
11 | 10 | oveq2d 7161 |
. . . . . . . 8
⊢ (𝑧 ∈ ℋ → (𝑥 +ℎ (𝑧 −ℎ
𝑧)) = (𝑥 +ℎ
0ℎ)) |
12 | | ax-hvaddid 28708 |
. . . . . . . 8
⊢ (𝑥 ∈ ℋ → (𝑥 +ℎ
0ℎ) = 𝑥) |
13 | 11, 12 | sylan9eqr 2875 |
. . . . . . 7
⊢ ((𝑥 ∈ ℋ ∧ 𝑧 ∈ ℋ) → (𝑥 +ℎ (𝑧 −ℎ
𝑧)) = 𝑥) |
14 | 9, 13 | eqtr3d 2855 |
. . . . . 6
⊢ ((𝑥 ∈ ℋ ∧ 𝑧 ∈ ℋ) → (𝑧 +ℎ (𝑥 −ℎ
𝑧)) = 𝑥) |
15 | 4, 7, 14 | syl2an 595 |
. . . . 5
⊢ ((((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) ∧ (𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅)) → (𝑧 +ℎ (𝑥 −ℎ 𝑧)) = 𝑥) |
16 | | 5oalem1.4 |
. . . . . . 7
⊢ 𝑅 ∈
Sℋ |
17 | 5, 16 | shsvai 29068 |
. . . . . 6
⊢ ((𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅) → (𝑧 +ℎ (𝑥 −ℎ 𝑧)) ∈ (𝐶 +ℋ 𝑅)) |
18 | 17 | adantl 482 |
. . . . 5
⊢ ((((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) ∧ (𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅)) → (𝑧 +ℎ (𝑥 −ℎ 𝑧)) ∈ (𝐶 +ℋ 𝑅)) |
19 | 15, 18 | eqeltrrd 2911 |
. . . 4
⊢ ((((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) ∧ (𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅)) → 𝑥 ∈ (𝐶 +ℋ 𝑅)) |
20 | 1, 19 | elind 4168 |
. . 3
⊢ ((((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) ∧ (𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅)) → 𝑥 ∈ (𝐴 ∩ (𝐶 +ℋ 𝑅))) |
21 | | simpllr 772 |
. . 3
⊢ ((((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) ∧ (𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅)) → 𝑦 ∈ 𝐵) |
22 | 5, 16 | shscli 29021 |
. . . . . 6
⊢ (𝐶 +ℋ 𝑅) ∈
Sℋ |
23 | 2, 22 | shincli 29066 |
. . . . 5
⊢ (𝐴 ∩ (𝐶 +ℋ 𝑅)) ∈
Sℋ |
24 | | 5oalem1.2 |
. . . . 5
⊢ 𝐵 ∈
Sℋ |
25 | 23, 24 | shsvai 29068 |
. . . 4
⊢ ((𝑥 ∈ (𝐴 ∩ (𝐶 +ℋ 𝑅)) ∧ 𝑦 ∈ 𝐵) → (𝑥 +ℎ 𝑦) ∈ ((𝐴 ∩ (𝐶 +ℋ 𝑅)) +ℋ 𝐵)) |
26 | 23, 24 | shscomi 29067 |
. . . 4
⊢ ((𝐴 ∩ (𝐶 +ℋ 𝑅)) +ℋ 𝐵) = (𝐵 +ℋ (𝐴 ∩ (𝐶 +ℋ 𝑅))) |
27 | 25, 26 | eleqtrdi 2920 |
. . 3
⊢ ((𝑥 ∈ (𝐴 ∩ (𝐶 +ℋ 𝑅)) ∧ 𝑦 ∈ 𝐵) → (𝑥 +ℎ 𝑦) ∈ (𝐵 +ℋ (𝐴 ∩ (𝐶 +ℋ 𝑅)))) |
28 | 20, 21, 27 | syl2anc 584 |
. 2
⊢ ((((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) ∧ (𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅)) → (𝑥 +ℎ 𝑦) ∈ (𝐵 +ℋ (𝐴 ∩ (𝐶 +ℋ 𝑅)))) |
29 | | eleq1 2897 |
. . 3
⊢ (𝑣 = (𝑥 +ℎ 𝑦) → (𝑣 ∈ (𝐵 +ℋ (𝐴 ∩ (𝐶 +ℋ 𝑅))) ↔ (𝑥 +ℎ 𝑦) ∈ (𝐵 +ℋ (𝐴 ∩ (𝐶 +ℋ 𝑅))))) |
30 | 29 | ad2antlr 723 |
. 2
⊢ ((((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) ∧ (𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅)) → (𝑣 ∈ (𝐵 +ℋ (𝐴 ∩ (𝐶 +ℋ 𝑅))) ↔ (𝑥 +ℎ 𝑦) ∈ (𝐵 +ℋ (𝐴 ∩ (𝐶 +ℋ 𝑅))))) |
31 | 28, 30 | mpbird 258 |
1
⊢ ((((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝑣 = (𝑥 +ℎ 𝑦)) ∧ (𝑧 ∈ 𝐶 ∧ (𝑥 −ℎ 𝑧) ∈ 𝑅)) → 𝑣 ∈ (𝐵 +ℋ (𝐴 ∩ (𝐶 +ℋ 𝑅)))) |