Step | Hyp | Ref
| Expression |
1 | | simp2 1055 |
. . 3
⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 𝐴 ∈ (𝔼‘𝑁)) |
2 | | simp3 1056 |
. . 3
⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 𝐵 ∈ (𝔼‘𝑁)) |
3 | | brbtwn 25579 |
. . 3
⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → (𝐴 Btwn 〈𝐵, 𝐵〉 ↔ ∃𝑡 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖))))) |
4 | 1, 2, 2, 3 | syl3anc 1318 |
. 2
⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → (𝐴 Btwn 〈𝐵, 𝐵〉 ↔ ∃𝑡 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖))))) |
5 | | 0re 9919 |
. . . . . . 7
⊢ 0 ∈
ℝ |
6 | | 1re 9918 |
. . . . . . 7
⊢ 1 ∈
ℝ |
7 | 5, 6 | elicc2i 12110 |
. . . . . 6
⊢ (𝑡 ∈ (0[,]1) ↔ (𝑡 ∈ ℝ ∧ 0 ≤
𝑡 ∧ 𝑡 ≤ 1)) |
8 | 7 | simp1bi 1069 |
. . . . 5
⊢ (𝑡 ∈ (0[,]1) → 𝑡 ∈
ℝ) |
9 | 8 | recnd 9947 |
. . . 4
⊢ (𝑡 ∈ (0[,]1) → 𝑡 ∈
ℂ) |
10 | | eqeefv 25583 |
. . . . . . . 8
⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → (𝐴 = 𝐵 ↔ ∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (𝐵‘𝑖))) |
11 | 10 | 3adant1 1072 |
. . . . . . 7
⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → (𝐴 = 𝐵 ↔ ∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (𝐵‘𝑖))) |
12 | 11 | adantr 480 |
. . . . . 6
⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) → (𝐴 = 𝐵 ↔ ∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (𝐵‘𝑖))) |
13 | | ax-1cn 9873 |
. . . . . . . . . . . 12
⊢ 1 ∈
ℂ |
14 | | npcan 10169 |
. . . . . . . . . . . 12
⊢ ((1
∈ ℂ ∧ 𝑡
∈ ℂ) → ((1 − 𝑡) + 𝑡) = 1) |
15 | 13, 14 | mpan 702 |
. . . . . . . . . . 11
⊢ (𝑡 ∈ ℂ → ((1
− 𝑡) + 𝑡) = 1) |
16 | 15 | ad2antlr 759 |
. . . . . . . . . 10
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → ((1 − 𝑡) + 𝑡) = 1) |
17 | 16 | oveq1d 6564 |
. . . . . . . . 9
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → (((1 − 𝑡) + 𝑡) · (𝐵‘𝑖)) = (1 · (𝐵‘𝑖))) |
18 | | subcl 10159 |
. . . . . . . . . . . 12
⊢ ((1
∈ ℂ ∧ 𝑡
∈ ℂ) → (1 − 𝑡) ∈ ℂ) |
19 | 13, 18 | mpan 702 |
. . . . . . . . . . 11
⊢ (𝑡 ∈ ℂ → (1
− 𝑡) ∈
ℂ) |
20 | 19 | ad2antlr 759 |
. . . . . . . . . 10
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → (1 − 𝑡) ∈ ℂ) |
21 | | simplr 788 |
. . . . . . . . . 10
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → 𝑡 ∈ ℂ) |
22 | | simpll3 1095 |
. . . . . . . . . . 11
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → 𝐵 ∈ (𝔼‘𝑁)) |
23 | | fveecn 25582 |
. . . . . . . . . . 11
⊢ ((𝐵 ∈ (𝔼‘𝑁) ∧ 𝑖 ∈ (1...𝑁)) → (𝐵‘𝑖) ∈ ℂ) |
24 | 22, 23 | sylancom 698 |
. . . . . . . . . 10
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → (𝐵‘𝑖) ∈ ℂ) |
25 | 20, 21, 24 | adddird 9944 |
. . . . . . . . 9
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → (((1 − 𝑡) + 𝑡) · (𝐵‘𝑖)) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖)))) |
26 | 24 | mulid2d 9937 |
. . . . . . . . 9
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → (1 · (𝐵‘𝑖)) = (𝐵‘𝑖)) |
27 | 17, 25, 26 | 3eqtr3rd 2653 |
. . . . . . . 8
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → (𝐵‘𝑖) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖)))) |
28 | 27 | eqeq2d 2620 |
. . . . . . 7
⊢ ((((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) ∧ 𝑖 ∈ (1...𝑁)) → ((𝐴‘𝑖) = (𝐵‘𝑖) ↔ (𝐴‘𝑖) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖))))) |
29 | 28 | ralbidva 2968 |
. . . . . 6
⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) → (∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (𝐵‘𝑖) ↔ ∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖))))) |
30 | 12, 29 | bitrd 267 |
. . . . 5
⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) → (𝐴 = 𝐵 ↔ ∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖))))) |
31 | 30 | biimprd 237 |
. . . 4
⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ ℂ) → (∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖))) → 𝐴 = 𝐵)) |
32 | 9, 31 | sylan2 490 |
. . 3
⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑡 ∈ (0[,]1)) → (∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖))) → 𝐴 = 𝐵)) |
33 | 32 | rexlimdva 3013 |
. 2
⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → (∃𝑡 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝐴‘𝑖) = (((1 − 𝑡) · (𝐵‘𝑖)) + (𝑡 · (𝐵‘𝑖))) → 𝐴 = 𝐵)) |
34 | 4, 33 | sylbid 229 |
1
⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → (𝐴 Btwn 〈𝐵, 𝐵〉 → 𝐴 = 𝐵)) |