Proof of Theorem strleund
Step | Hyp | Ref
| Expression |
1 | | strleund.f |
. . . . 5
⊢ (𝜑 → 𝐹 Struct 〈𝐴, 𝐵〉) |
2 | | isstructim 12430 |
. . . . 5
⊢ (𝐹 Struct 〈𝐴, 𝐵〉 → ((𝐴 ∈ ℕ ∧ 𝐵 ∈ ℕ ∧ 𝐴 ≤ 𝐵) ∧ Fun (𝐹 ∖ {∅}) ∧ dom 𝐹 ⊆ (𝐴...𝐵))) |
3 | 1, 2 | syl 14 |
. . . 4
⊢ (𝜑 → ((𝐴 ∈ ℕ ∧ 𝐵 ∈ ℕ ∧ 𝐴 ≤ 𝐵) ∧ Fun (𝐹 ∖ {∅}) ∧ dom 𝐹 ⊆ (𝐴...𝐵))) |
4 | 3 | simp1d 1004 |
. . 3
⊢ (𝜑 → (𝐴 ∈ ℕ ∧ 𝐵 ∈ ℕ ∧ 𝐴 ≤ 𝐵)) |
5 | 4 | simp1d 1004 |
. 2
⊢ (𝜑 → 𝐴 ∈ ℕ) |
6 | | strleund.g |
. . . . 5
⊢ (𝜑 → 𝐺 Struct 〈𝐶, 𝐷〉) |
7 | | isstructim 12430 |
. . . . 5
⊢ (𝐺 Struct 〈𝐶, 𝐷〉 → ((𝐶 ∈ ℕ ∧ 𝐷 ∈ ℕ ∧ 𝐶 ≤ 𝐷) ∧ Fun (𝐺 ∖ {∅}) ∧ dom 𝐺 ⊆ (𝐶...𝐷))) |
8 | 6, 7 | syl 14 |
. . . 4
⊢ (𝜑 → ((𝐶 ∈ ℕ ∧ 𝐷 ∈ ℕ ∧ 𝐶 ≤ 𝐷) ∧ Fun (𝐺 ∖ {∅}) ∧ dom 𝐺 ⊆ (𝐶...𝐷))) |
9 | 8 | simp1d 1004 |
. . 3
⊢ (𝜑 → (𝐶 ∈ ℕ ∧ 𝐷 ∈ ℕ ∧ 𝐶 ≤ 𝐷)) |
10 | 9 | simp2d 1005 |
. 2
⊢ (𝜑 → 𝐷 ∈ ℕ) |
11 | 5 | nnred 8891 |
. . 3
⊢ (𝜑 → 𝐴 ∈ ℝ) |
12 | 9 | simp1d 1004 |
. . . 4
⊢ (𝜑 → 𝐶 ∈ ℕ) |
13 | 12 | nnred 8891 |
. . 3
⊢ (𝜑 → 𝐶 ∈ ℝ) |
14 | 10 | nnred 8891 |
. . 3
⊢ (𝜑 → 𝐷 ∈ ℝ) |
15 | 4 | simp2d 1005 |
. . . . 5
⊢ (𝜑 → 𝐵 ∈ ℕ) |
16 | 15 | nnred 8891 |
. . . 4
⊢ (𝜑 → 𝐵 ∈ ℝ) |
17 | 4 | simp3d 1006 |
. . . 4
⊢ (𝜑 → 𝐴 ≤ 𝐵) |
18 | | strleund.l |
. . . . 5
⊢ (𝜑 → 𝐵 < 𝐶) |
19 | 16, 13, 18 | ltled 8038 |
. . . 4
⊢ (𝜑 → 𝐵 ≤ 𝐶) |
20 | 11, 16, 13, 17, 19 | letrd 8043 |
. . 3
⊢ (𝜑 → 𝐴 ≤ 𝐶) |
21 | 9 | simp3d 1006 |
. . 3
⊢ (𝜑 → 𝐶 ≤ 𝐷) |
22 | 11, 13, 14, 20, 21 | letrd 8043 |
. 2
⊢ (𝜑 → 𝐴 ≤ 𝐷) |
23 | 3 | simp2d 1005 |
. . . 4
⊢ (𝜑 → Fun (𝐹 ∖ {∅})) |
24 | 8 | simp2d 1005 |
. . . 4
⊢ (𝜑 → Fun (𝐺 ∖ {∅})) |
25 | | difss 3253 |
. . . . . . . 8
⊢ (𝐹 ∖ {∅}) ⊆
𝐹 |
26 | | dmss 4810 |
. . . . . . . 8
⊢ ((𝐹 ∖ {∅}) ⊆
𝐹 → dom (𝐹 ∖ {∅}) ⊆ dom
𝐹) |
27 | 25, 26 | mp1i 10 |
. . . . . . 7
⊢ (𝜑 → dom (𝐹 ∖ {∅}) ⊆ dom 𝐹) |
28 | 3 | simp3d 1006 |
. . . . . . 7
⊢ (𝜑 → dom 𝐹 ⊆ (𝐴...𝐵)) |
29 | 27, 28 | sstrd 3157 |
. . . . . 6
⊢ (𝜑 → dom (𝐹 ∖ {∅}) ⊆ (𝐴...𝐵)) |
30 | | difss 3253 |
. . . . . . . 8
⊢ (𝐺 ∖ {∅}) ⊆
𝐺 |
31 | | dmss 4810 |
. . . . . . . 8
⊢ ((𝐺 ∖ {∅}) ⊆
𝐺 → dom (𝐺 ∖ {∅}) ⊆ dom
𝐺) |
32 | 30, 31 | mp1i 10 |
. . . . . . 7
⊢ (𝜑 → dom (𝐺 ∖ {∅}) ⊆ dom 𝐺) |
33 | 8 | simp3d 1006 |
. . . . . . 7
⊢ (𝜑 → dom 𝐺 ⊆ (𝐶...𝐷)) |
34 | 32, 33 | sstrd 3157 |
. . . . . 6
⊢ (𝜑 → dom (𝐺 ∖ {∅}) ⊆ (𝐶...𝐷)) |
35 | | ss2in 3355 |
. . . . . 6
⊢ ((dom
(𝐹 ∖ {∅})
⊆ (𝐴...𝐵) ∧ dom (𝐺 ∖ {∅}) ⊆ (𝐶...𝐷)) → (dom (𝐹 ∖ {∅}) ∩ dom (𝐺 ∖ {∅})) ⊆
((𝐴...𝐵) ∩ (𝐶...𝐷))) |
36 | 29, 34, 35 | syl2anc 409 |
. . . . 5
⊢ (𝜑 → (dom (𝐹 ∖ {∅}) ∩ dom (𝐺 ∖ {∅})) ⊆
((𝐴...𝐵) ∩ (𝐶...𝐷))) |
37 | | fzdisj 10008 |
. . . . . 6
⊢ (𝐵 < 𝐶 → ((𝐴...𝐵) ∩ (𝐶...𝐷)) = ∅) |
38 | 18, 37 | syl 14 |
. . . . 5
⊢ (𝜑 → ((𝐴...𝐵) ∩ (𝐶...𝐷)) = ∅) |
39 | | sseq0 3456 |
. . . . 5
⊢ (((dom
(𝐹 ∖ {∅}) ∩
dom (𝐺 ∖ {∅}))
⊆ ((𝐴...𝐵) ∩ (𝐶...𝐷)) ∧ ((𝐴...𝐵) ∩ (𝐶...𝐷)) = ∅) → (dom (𝐹 ∖ {∅}) ∩ dom (𝐺 ∖ {∅})) =
∅) |
40 | 36, 38, 39 | syl2anc 409 |
. . . 4
⊢ (𝜑 → (dom (𝐹 ∖ {∅}) ∩ dom (𝐺 ∖ {∅})) =
∅) |
41 | | funun 5242 |
. . . 4
⊢ (((Fun
(𝐹 ∖ {∅}) ∧
Fun (𝐺 ∖ {∅}))
∧ (dom (𝐹 ∖
{∅}) ∩ dom (𝐺
∖ {∅})) = ∅) → Fun ((𝐹 ∖ {∅}) ∪ (𝐺 ∖ {∅}))) |
42 | 23, 24, 40, 41 | syl21anc 1232 |
. . 3
⊢ (𝜑 → Fun ((𝐹 ∖ {∅}) ∪ (𝐺 ∖ {∅}))) |
43 | | difundir 3380 |
. . . 4
⊢ ((𝐹 ∪ 𝐺) ∖ {∅}) = ((𝐹 ∖ {∅}) ∪ (𝐺 ∖ {∅})) |
44 | 43 | funeqi 5219 |
. . 3
⊢ (Fun
((𝐹 ∪ 𝐺) ∖ {∅}) ↔ Fun ((𝐹 ∖ {∅}) ∪ (𝐺 ∖
{∅}))) |
45 | 42, 44 | sylibr 133 |
. 2
⊢ (𝜑 → Fun ((𝐹 ∪ 𝐺) ∖ {∅})) |
46 | | structex 12428 |
. . . 4
⊢ (𝐹 Struct 〈𝐴, 𝐵〉 → 𝐹 ∈ V) |
47 | 1, 46 | syl 14 |
. . 3
⊢ (𝜑 → 𝐹 ∈ V) |
48 | | structex 12428 |
. . . 4
⊢ (𝐺 Struct 〈𝐶, 𝐷〉 → 𝐺 ∈ V) |
49 | 6, 48 | syl 14 |
. . 3
⊢ (𝜑 → 𝐺 ∈ V) |
50 | | unexg 4428 |
. . 3
⊢ ((𝐹 ∈ V ∧ 𝐺 ∈ V) → (𝐹 ∪ 𝐺) ∈ V) |
51 | 47, 49, 50 | syl2anc 409 |
. 2
⊢ (𝜑 → (𝐹 ∪ 𝐺) ∈ V) |
52 | | dmun 4818 |
. . 3
⊢ dom
(𝐹 ∪ 𝐺) = (dom 𝐹 ∪ dom 𝐺) |
53 | 15 | nnzd 9333 |
. . . . . . 7
⊢ (𝜑 → 𝐵 ∈ ℤ) |
54 | 10 | nnzd 9333 |
. . . . . . 7
⊢ (𝜑 → 𝐷 ∈ ℤ) |
55 | 16, 13, 14, 19, 21 | letrd 8043 |
. . . . . . 7
⊢ (𝜑 → 𝐵 ≤ 𝐷) |
56 | | eluz2 9493 |
. . . . . . 7
⊢ (𝐷 ∈
(ℤ≥‘𝐵) ↔ (𝐵 ∈ ℤ ∧ 𝐷 ∈ ℤ ∧ 𝐵 ≤ 𝐷)) |
57 | 53, 54, 55, 56 | syl3anbrc 1176 |
. . . . . 6
⊢ (𝜑 → 𝐷 ∈ (ℤ≥‘𝐵)) |
58 | | fzss2 10020 |
. . . . . 6
⊢ (𝐷 ∈
(ℤ≥‘𝐵) → (𝐴...𝐵) ⊆ (𝐴...𝐷)) |
59 | 57, 58 | syl 14 |
. . . . 5
⊢ (𝜑 → (𝐴...𝐵) ⊆ (𝐴...𝐷)) |
60 | 28, 59 | sstrd 3157 |
. . . 4
⊢ (𝜑 → dom 𝐹 ⊆ (𝐴...𝐷)) |
61 | 5 | nnzd 9333 |
. . . . . . 7
⊢ (𝜑 → 𝐴 ∈ ℤ) |
62 | 12 | nnzd 9333 |
. . . . . . 7
⊢ (𝜑 → 𝐶 ∈ ℤ) |
63 | | eluz2 9493 |
. . . . . . 7
⊢ (𝐶 ∈
(ℤ≥‘𝐴) ↔ (𝐴 ∈ ℤ ∧ 𝐶 ∈ ℤ ∧ 𝐴 ≤ 𝐶)) |
64 | 61, 62, 20, 63 | syl3anbrc 1176 |
. . . . . 6
⊢ (𝜑 → 𝐶 ∈ (ℤ≥‘𝐴)) |
65 | | fzss1 10019 |
. . . . . 6
⊢ (𝐶 ∈
(ℤ≥‘𝐴) → (𝐶...𝐷) ⊆ (𝐴...𝐷)) |
66 | 64, 65 | syl 14 |
. . . . 5
⊢ (𝜑 → (𝐶...𝐷) ⊆ (𝐴...𝐷)) |
67 | 33, 66 | sstrd 3157 |
. . . 4
⊢ (𝜑 → dom 𝐺 ⊆ (𝐴...𝐷)) |
68 | 60, 67 | unssd 3303 |
. . 3
⊢ (𝜑 → (dom 𝐹 ∪ dom 𝐺) ⊆ (𝐴...𝐷)) |
69 | 52, 68 | eqsstrid 3193 |
. 2
⊢ (𝜑 → dom (𝐹 ∪ 𝐺) ⊆ (𝐴...𝐷)) |
70 | | isstructr 12431 |
. 2
⊢ (((𝐴 ∈ ℕ ∧ 𝐷 ∈ ℕ ∧ 𝐴 ≤ 𝐷) ∧ (Fun ((𝐹 ∪ 𝐺) ∖ {∅}) ∧ (𝐹 ∪ 𝐺) ∈ V ∧ dom (𝐹 ∪ 𝐺) ⊆ (𝐴...𝐷))) → (𝐹 ∪ 𝐺) Struct 〈𝐴, 𝐷〉) |
71 | 5, 10, 22, 45, 51, 69, 70 | syl33anc 1248 |
1
⊢ (𝜑 → (𝐹 ∪ 𝐺) Struct 〈𝐴, 𝐷〉) |