Proof of Theorem paddasslem5
Step | Hyp | Ref
| Expression |
1 | | breq1 4586 |
. . . . . . . . 9
⊢ (𝑠 = 𝑧 → (𝑠 ≤ (𝑥 ∨ 𝑦) ↔ 𝑧 ≤ (𝑥 ∨ 𝑦))) |
2 | 1 | biimpac 502 |
. . . . . . . 8
⊢ ((𝑠 ≤ (𝑥 ∨ 𝑦) ∧ 𝑠 = 𝑧) → 𝑧 ≤ (𝑥 ∨ 𝑦)) |
3 | | eqid 2610 |
. . . . . . . . . 10
⊢
(Base‘𝐾) =
(Base‘𝐾) |
4 | | paddasslem.l |
. . . . . . . . . 10
⊢ ≤ =
(le‘𝐾) |
5 | | simpll1 1093 |
. . . . . . . . . . 11
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝐾 ∈ HL) |
6 | | hllat 33668 |
. . . . . . . . . . 11
⊢ (𝐾 ∈ HL → 𝐾 ∈ Lat) |
7 | 5, 6 | syl 17 |
. . . . . . . . . 10
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝐾 ∈ Lat) |
8 | | simpll2 1094 |
. . . . . . . . . . 11
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑟 ∈ 𝐴) |
9 | | paddasslem.a |
. . . . . . . . . . . 12
⊢ 𝐴 = (Atoms‘𝐾) |
10 | 3, 9 | atbase 33594 |
. . . . . . . . . . 11
⊢ (𝑟 ∈ 𝐴 → 𝑟 ∈ (Base‘𝐾)) |
11 | 8, 10 | syl 17 |
. . . . . . . . . 10
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑟 ∈ (Base‘𝐾)) |
12 | | simp32 1091 |
. . . . . . . . . . . . 13
⊢ ((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) → 𝑦 ∈ 𝐴) |
13 | 12 | ad2antrr 758 |
. . . . . . . . . . . 12
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑦 ∈ 𝐴) |
14 | 3, 9 | atbase 33594 |
. . . . . . . . . . . 12
⊢ (𝑦 ∈ 𝐴 → 𝑦 ∈ (Base‘𝐾)) |
15 | 13, 14 | syl 17 |
. . . . . . . . . . 11
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑦 ∈ (Base‘𝐾)) |
16 | | simp33 1092 |
. . . . . . . . . . . . 13
⊢ ((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) → 𝑧 ∈ 𝐴) |
17 | 16 | ad2antrr 758 |
. . . . . . . . . . . 12
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑧 ∈ 𝐴) |
18 | 3, 9 | atbase 33594 |
. . . . . . . . . . . 12
⊢ (𝑧 ∈ 𝐴 → 𝑧 ∈ (Base‘𝐾)) |
19 | 17, 18 | syl 17 |
. . . . . . . . . . 11
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑧 ∈ (Base‘𝐾)) |
20 | | paddasslem.j |
. . . . . . . . . . . 12
⊢ ∨ =
(join‘𝐾) |
21 | 3, 20 | latjcl 16874 |
. . . . . . . . . . 11
⊢ ((𝐾 ∈ Lat ∧ 𝑦 ∈ (Base‘𝐾) ∧ 𝑧 ∈ (Base‘𝐾)) → (𝑦 ∨ 𝑧) ∈ (Base‘𝐾)) |
22 | 7, 15, 19, 21 | syl3anc 1318 |
. . . . . . . . . 10
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → (𝑦 ∨ 𝑧) ∈ (Base‘𝐾)) |
23 | | simp31 1090 |
. . . . . . . . . . . . 13
⊢ ((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) → 𝑥 ∈ 𝐴) |
24 | 23 | ad2antrr 758 |
. . . . . . . . . . . 12
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑥 ∈ 𝐴) |
25 | 3, 9 | atbase 33594 |
. . . . . . . . . . . 12
⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ (Base‘𝐾)) |
26 | 24, 25 | syl 17 |
. . . . . . . . . . 11
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑥 ∈ (Base‘𝐾)) |
27 | 3, 20 | latjcl 16874 |
. . . . . . . . . . 11
⊢ ((𝐾 ∈ Lat ∧ 𝑥 ∈ (Base‘𝐾) ∧ 𝑦 ∈ (Base‘𝐾)) → (𝑥 ∨ 𝑦) ∈ (Base‘𝐾)) |
28 | 7, 26, 15, 27 | syl3anc 1318 |
. . . . . . . . . 10
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → (𝑥 ∨ 𝑦) ∈ (Base‘𝐾)) |
29 | | simplr 788 |
. . . . . . . . . 10
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑟 ≤ (𝑦 ∨ 𝑧)) |
30 | 4, 20, 9 | hlatlej2 33680 |
. . . . . . . . . . . 12
⊢ ((𝐾 ∈ HL ∧ 𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) → 𝑦 ≤ (𝑥 ∨ 𝑦)) |
31 | 5, 24, 13, 30 | syl3anc 1318 |
. . . . . . . . . . 11
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑦 ≤ (𝑥 ∨ 𝑦)) |
32 | | simpr 476 |
. . . . . . . . . . 11
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑧 ≤ (𝑥 ∨ 𝑦)) |
33 | 3, 4, 20 | latjle12 16885 |
. . . . . . . . . . . . 13
⊢ ((𝐾 ∈ Lat ∧ (𝑦 ∈ (Base‘𝐾) ∧ 𝑧 ∈ (Base‘𝐾) ∧ (𝑥 ∨ 𝑦) ∈ (Base‘𝐾))) → ((𝑦 ≤ (𝑥 ∨ 𝑦) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) ↔ (𝑦 ∨ 𝑧) ≤ (𝑥 ∨ 𝑦))) |
34 | 33 | biimpd 218 |
. . . . . . . . . . . 12
⊢ ((𝐾 ∈ Lat ∧ (𝑦 ∈ (Base‘𝐾) ∧ 𝑧 ∈ (Base‘𝐾) ∧ (𝑥 ∨ 𝑦) ∈ (Base‘𝐾))) → ((𝑦 ≤ (𝑥 ∨ 𝑦) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → (𝑦 ∨ 𝑧) ≤ (𝑥 ∨ 𝑦))) |
35 | 7, 15, 19, 28, 34 | syl13anc 1320 |
. . . . . . . . . . 11
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → ((𝑦 ≤ (𝑥 ∨ 𝑦) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → (𝑦 ∨ 𝑧) ≤ (𝑥 ∨ 𝑦))) |
36 | 31, 32, 35 | mp2and 711 |
. . . . . . . . . 10
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → (𝑦 ∨ 𝑧) ≤ (𝑥 ∨ 𝑦)) |
37 | 3, 4, 7, 11, 22, 28, 29, 36 | lattrd 16881 |
. . . . . . . . 9
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑧 ≤ (𝑥 ∨ 𝑦)) → 𝑟 ≤ (𝑥 ∨ 𝑦)) |
38 | 37 | ex 449 |
. . . . . . . 8
⊢ (((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) → (𝑧 ≤ (𝑥 ∨ 𝑦) → 𝑟 ≤ (𝑥 ∨ 𝑦))) |
39 | 2, 38 | syl5 33 |
. . . . . . 7
⊢ (((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) → ((𝑠 ≤ (𝑥 ∨ 𝑦) ∧ 𝑠 = 𝑧) → 𝑟 ≤ (𝑥 ∨ 𝑦))) |
40 | 39 | expdimp 452 |
. . . . . 6
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑠 ≤ (𝑥 ∨ 𝑦)) → (𝑠 = 𝑧 → 𝑟 ≤ (𝑥 ∨ 𝑦))) |
41 | 40 | necon3bd 2796 |
. . . . 5
⊢ ((((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧)) ∧ 𝑠 ≤ (𝑥 ∨ 𝑦)) → (¬ 𝑟 ≤ (𝑥 ∨ 𝑦) → 𝑠 ≠ 𝑧)) |
42 | 41 | exp31 628 |
. . . 4
⊢ ((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) → (𝑟 ≤ (𝑦 ∨ 𝑧) → (𝑠 ≤ (𝑥 ∨ 𝑦) → (¬ 𝑟 ≤ (𝑥 ∨ 𝑦) → 𝑠 ≠ 𝑧)))) |
43 | 42 | com23 84 |
. . 3
⊢ ((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) → (𝑠 ≤ (𝑥 ∨ 𝑦) → (𝑟 ≤ (𝑦 ∨ 𝑧) → (¬ 𝑟 ≤ (𝑥 ∨ 𝑦) → 𝑠 ≠ 𝑧)))) |
44 | 43 | com24 93 |
. 2
⊢ ((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) → (¬ 𝑟 ≤ (𝑥 ∨ 𝑦) → (𝑟 ≤ (𝑦 ∨ 𝑧) → (𝑠 ≤ (𝑥 ∨ 𝑦) → 𝑠 ≠ 𝑧)))) |
45 | 44 | 3imp2 1274 |
1
⊢ (((𝐾 ∈ HL ∧ 𝑟 ∈ 𝐴 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴)) ∧ (¬ 𝑟 ≤ (𝑥 ∨ 𝑦) ∧ 𝑟 ≤ (𝑦 ∨ 𝑧) ∧ 𝑠 ≤ (𝑥 ∨ 𝑦))) → 𝑠 ≠ 𝑧) |