Step | Hyp | Ref
| Expression |
1 | | fmulcl.2 |
. 2
⊢ 𝑋 = (seq1(𝑃, 𝑈)‘𝑁) |
2 | | fmulcl.4 |
. . . 4
⊢ (𝜑 → 𝑁 ∈ (1...𝑀)) |
3 | | elfzuz 13252 |
. . . 4
⊢ (𝑁 ∈ (1...𝑀) → 𝑁 ∈
(ℤ≥‘1)) |
4 | 2, 3 | syl 17 |
. . 3
⊢ (𝜑 → 𝑁 ∈
(ℤ≥‘1)) |
5 | | elfzuz3 13253 |
. . . . . 6
⊢ (𝑁 ∈ (1...𝑀) → 𝑀 ∈ (ℤ≥‘𝑁)) |
6 | | fzss2 13296 |
. . . . . 6
⊢ (𝑀 ∈
(ℤ≥‘𝑁) → (1...𝑁) ⊆ (1...𝑀)) |
7 | 2, 5, 6 | 3syl 18 |
. . . . 5
⊢ (𝜑 → (1...𝑁) ⊆ (1...𝑀)) |
8 | 7 | sselda 3921 |
. . . 4
⊢ ((𝜑 ∧ ℎ ∈ (1...𝑁)) → ℎ ∈ (1...𝑀)) |
9 | | fmulcl.5 |
. . . . 5
⊢ (𝜑 → 𝑈:(1...𝑀)⟶𝑌) |
10 | 9 | ffvelrnda 6961 |
. . . 4
⊢ ((𝜑 ∧ ℎ ∈ (1...𝑀)) → (𝑈‘ℎ) ∈ 𝑌) |
11 | 8, 10 | syldan 591 |
. . 3
⊢ ((𝜑 ∧ ℎ ∈ (1...𝑁)) → (𝑈‘ℎ) ∈ 𝑌) |
12 | | simprl 768 |
. . . . 5
⊢ ((𝜑 ∧ (ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌)) → ℎ ∈ 𝑌) |
13 | | simprr 770 |
. . . . 5
⊢ ((𝜑 ∧ (ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌)) → 𝑙 ∈ 𝑌) |
14 | | fmulcl.7 |
. . . . . . 7
⊢ (𝜑 → 𝑇 ∈ V) |
15 | 14 | adantr 481 |
. . . . . 6
⊢ ((𝜑 ∧ (ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌)) → 𝑇 ∈ V) |
16 | | mptexg 7097 |
. . . . . 6
⊢ (𝑇 ∈ V → (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡))) ∈ V) |
17 | 15, 16 | syl 17 |
. . . . 5
⊢ ((𝜑 ∧ (ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌)) → (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡))) ∈ V) |
18 | | fveq1 6773 |
. . . . . . . 8
⊢ (𝑓 = ℎ → (𝑓‘𝑡) = (ℎ‘𝑡)) |
19 | | fveq1 6773 |
. . . . . . . 8
⊢ (𝑔 = 𝑙 → (𝑔‘𝑡) = (𝑙‘𝑡)) |
20 | 18, 19 | oveqan12d 7294 |
. . . . . . 7
⊢ ((𝑓 = ℎ ∧ 𝑔 = 𝑙) → ((𝑓‘𝑡) · (𝑔‘𝑡)) = ((ℎ‘𝑡) · (𝑙‘𝑡))) |
21 | 20 | mpteq2dv 5176 |
. . . . . 6
⊢ ((𝑓 = ℎ ∧ 𝑔 = 𝑙) → (𝑡 ∈ 𝑇 ↦ ((𝑓‘𝑡) · (𝑔‘𝑡))) = (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡)))) |
22 | | fmulcl.1 |
. . . . . 6
⊢ 𝑃 = (𝑓 ∈ 𝑌, 𝑔 ∈ 𝑌 ↦ (𝑡 ∈ 𝑇 ↦ ((𝑓‘𝑡) · (𝑔‘𝑡)))) |
23 | 21, 22 | ovmpoga 7427 |
. . . . 5
⊢ ((ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌 ∧ (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡))) ∈ V) → (ℎ𝑃𝑙) = (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡)))) |
24 | 12, 13, 17, 23 | syl3anc 1370 |
. . . 4
⊢ ((𝜑 ∧ (ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌)) → (ℎ𝑃𝑙) = (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡)))) |
25 | | 3simpc 1149 |
. . . . . 6
⊢ ((𝜑 ∧ ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌) → (ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌)) |
26 | | eleq1w 2821 |
. . . . . . . . 9
⊢ (𝑓 = ℎ → (𝑓 ∈ 𝑌 ↔ ℎ ∈ 𝑌)) |
27 | 26 | 3anbi2d 1440 |
. . . . . . . 8
⊢ (𝑓 = ℎ → ((𝜑 ∧ 𝑓 ∈ 𝑌 ∧ 𝑔 ∈ 𝑌) ↔ (𝜑 ∧ ℎ ∈ 𝑌 ∧ 𝑔 ∈ 𝑌))) |
28 | 18 | oveq1d 7290 |
. . . . . . . . . 10
⊢ (𝑓 = ℎ → ((𝑓‘𝑡) · (𝑔‘𝑡)) = ((ℎ‘𝑡) · (𝑔‘𝑡))) |
29 | 28 | mpteq2dv 5176 |
. . . . . . . . 9
⊢ (𝑓 = ℎ → (𝑡 ∈ 𝑇 ↦ ((𝑓‘𝑡) · (𝑔‘𝑡))) = (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑔‘𝑡)))) |
30 | 29 | eleq1d 2823 |
. . . . . . . 8
⊢ (𝑓 = ℎ → ((𝑡 ∈ 𝑇 ↦ ((𝑓‘𝑡) · (𝑔‘𝑡))) ∈ 𝑌 ↔ (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑔‘𝑡))) ∈ 𝑌)) |
31 | 27, 30 | imbi12d 345 |
. . . . . . 7
⊢ (𝑓 = ℎ → (((𝜑 ∧ 𝑓 ∈ 𝑌 ∧ 𝑔 ∈ 𝑌) → (𝑡 ∈ 𝑇 ↦ ((𝑓‘𝑡) · (𝑔‘𝑡))) ∈ 𝑌) ↔ ((𝜑 ∧ ℎ ∈ 𝑌 ∧ 𝑔 ∈ 𝑌) → (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑔‘𝑡))) ∈ 𝑌))) |
32 | | eleq1w 2821 |
. . . . . . . . 9
⊢ (𝑔 = 𝑙 → (𝑔 ∈ 𝑌 ↔ 𝑙 ∈ 𝑌)) |
33 | 32 | 3anbi3d 1441 |
. . . . . . . 8
⊢ (𝑔 = 𝑙 → ((𝜑 ∧ ℎ ∈ 𝑌 ∧ 𝑔 ∈ 𝑌) ↔ (𝜑 ∧ ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌))) |
34 | 19 | oveq2d 7291 |
. . . . . . . . . 10
⊢ (𝑔 = 𝑙 → ((ℎ‘𝑡) · (𝑔‘𝑡)) = ((ℎ‘𝑡) · (𝑙‘𝑡))) |
35 | 34 | mpteq2dv 5176 |
. . . . . . . . 9
⊢ (𝑔 = 𝑙 → (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑔‘𝑡))) = (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡)))) |
36 | 35 | eleq1d 2823 |
. . . . . . . 8
⊢ (𝑔 = 𝑙 → ((𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑔‘𝑡))) ∈ 𝑌 ↔ (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡))) ∈ 𝑌)) |
37 | 33, 36 | imbi12d 345 |
. . . . . . 7
⊢ (𝑔 = 𝑙 → (((𝜑 ∧ ℎ ∈ 𝑌 ∧ 𝑔 ∈ 𝑌) → (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑔‘𝑡))) ∈ 𝑌) ↔ ((𝜑 ∧ ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌) → (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡))) ∈ 𝑌))) |
38 | | fmulcl.6 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑓 ∈ 𝑌 ∧ 𝑔 ∈ 𝑌) → (𝑡 ∈ 𝑇 ↦ ((𝑓‘𝑡) · (𝑔‘𝑡))) ∈ 𝑌) |
39 | 31, 37, 38 | vtocl2g 3510 |
. . . . . 6
⊢ ((ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌) → ((𝜑 ∧ ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌) → (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡))) ∈ 𝑌)) |
40 | 25, 39 | mpcom 38 |
. . . . 5
⊢ ((𝜑 ∧ ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌) → (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡))) ∈ 𝑌) |
41 | 40 | 3expb 1119 |
. . . 4
⊢ ((𝜑 ∧ (ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌)) → (𝑡 ∈ 𝑇 ↦ ((ℎ‘𝑡) · (𝑙‘𝑡))) ∈ 𝑌) |
42 | 24, 41 | eqeltrd 2839 |
. . 3
⊢ ((𝜑 ∧ (ℎ ∈ 𝑌 ∧ 𝑙 ∈ 𝑌)) → (ℎ𝑃𝑙) ∈ 𝑌) |
43 | 4, 11, 42 | seqcl 13743 |
. 2
⊢ (𝜑 → (seq1(𝑃, 𝑈)‘𝑁) ∈ 𝑌) |
44 | 1, 43 | eqeltrid 2843 |
1
⊢ (𝜑 → 𝑋 ∈ 𝑌) |