| Step | Hyp | Ref
| Expression |
| 1 | | vitali.1 |
. . 3
⊢ ∼ =
{〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ (0[,]1) ∧ 𝑦 ∈ (0[,]1)) ∧ (𝑥 − 𝑦) ∈ ℚ)} |
| 2 | 1 | relopabiv 5766 |
. 2
⊢ Rel ∼ |
| 3 | | simplr 775 |
. . . 4
⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → 𝑣 ∈ (0[,]1)) |
| 4 | | simpll 773 |
. . . 4
⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → 𝑢 ∈ (0[,]1)) |
| 5 | | unitssre 13447 |
. . . . . . . . 9
⊢ (0[,]1)
⊆ ℝ |
| 6 | 5 | sseli 3913 |
. . . . . . . 8
⊢ (𝑢 ∈ (0[,]1) → 𝑢 ∈
ℝ) |
| 7 | 6 | recnd 11168 |
. . . . . . 7
⊢ (𝑢 ∈ (0[,]1) → 𝑢 ∈
ℂ) |
| 8 | 7 | ad2antrr 733 |
. . . . . 6
⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → 𝑢 ∈ ℂ) |
| 9 | 5 | sseli 3913 |
. . . . . . . 8
⊢ (𝑣 ∈ (0[,]1) → 𝑣 ∈
ℝ) |
| 10 | 9 | recnd 11168 |
. . . . . . 7
⊢ (𝑣 ∈ (0[,]1) → 𝑣 ∈
ℂ) |
| 11 | 10 | ad2antlr 734 |
. . . . . 6
⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → 𝑣 ∈ ℂ) |
| 12 | 8, 11 | negsubdi2d 11516 |
. . . . 5
⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → -(𝑢 − 𝑣) = (𝑣 − 𝑢)) |
| 13 | | qnegcl 12911 |
. . . . . 6
⊢ ((𝑢 − 𝑣) ∈ ℚ → -(𝑢 − 𝑣) ∈ ℚ) |
| 14 | 13 | adantl 483 |
. . . . 5
⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → -(𝑢 − 𝑣) ∈ ℚ) |
| 15 | 12, 14 | eqeltrrd 2842 |
. . . 4
⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → (𝑣 − 𝑢) ∈ ℚ) |
| 16 | 3, 4, 15 | jca31 520 |
. . 3
⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → ((𝑣 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ∧ (𝑣 − 𝑢) ∈ ℚ)) |
| 17 | | oveq12 7369 |
. . . . 5
⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑣) → (𝑥 − 𝑦) = (𝑢 − 𝑣)) |
| 18 | 17 | eleq1d 2826 |
. . . 4
⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑣) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑢 − 𝑣) ∈ ℚ)) |
| 19 | 18, 1 | brab2a 5714 |
. . 3
⊢ (𝑢 ∼ 𝑣 ↔ ((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ)) |
| 20 | | oveq12 7369 |
. . . . 5
⊢ ((𝑥 = 𝑣 ∧ 𝑦 = 𝑢) → (𝑥 − 𝑦) = (𝑣 − 𝑢)) |
| 21 | 20 | eleq1d 2826 |
. . . 4
⊢ ((𝑥 = 𝑣 ∧ 𝑦 = 𝑢) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑣 − 𝑢) ∈ ℚ)) |
| 22 | 21, 1 | brab2a 5714 |
. . 3
⊢ (𝑣 ∼ 𝑢 ↔ ((𝑣 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ∧ (𝑣 − 𝑢) ∈ ℚ)) |
| 23 | 16, 19, 22 | 3imtr4i 294 |
. 2
⊢ (𝑢 ∼ 𝑣 → 𝑣 ∼ 𝑢) |
| 24 | 19 | birani 505 |
. . . . 5
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → ((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ)) |
| 25 | 24 | simpld 496 |
. . . 4
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1))) |
| 26 | 25 | simpld 496 |
. . 3
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑢 ∈ (0[,]1)) |
| 27 | | oveq12 7369 |
. . . . . . . 8
⊢ ((𝑥 = 𝑣 ∧ 𝑦 = 𝑤) → (𝑥 − 𝑦) = (𝑣 − 𝑤)) |
| 28 | 27 | eleq1d 2826 |
. . . . . . 7
⊢ ((𝑥 = 𝑣 ∧ 𝑦 = 𝑤) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑣 − 𝑤) ∈ ℚ)) |
| 29 | 28, 1 | brab2a 5714 |
. . . . . 6
⊢ (𝑣 ∼ 𝑤 ↔ ((𝑣 ∈ (0[,]1) ∧ 𝑤 ∈ (0[,]1)) ∧ (𝑣 − 𝑤) ∈ ℚ)) |
| 30 | 29 | bilani 506 |
. . . . 5
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → ((𝑣 ∈ (0[,]1) ∧ 𝑤 ∈ (0[,]1)) ∧ (𝑣 − 𝑤) ∈ ℚ)) |
| 31 | 30 | simpld 496 |
. . . 4
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑣 ∈ (0[,]1) ∧ 𝑤 ∈ (0[,]1))) |
| 32 | 31 | simprd 497 |
. . 3
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑤 ∈ (0[,]1)) |
| 33 | 26, 7 | syl 17 |
. . . . 5
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑢 ∈ ℂ) |
| 34 | 24, 11 | syl 17 |
. . . . 5
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑣 ∈ ℂ) |
| 35 | 5, 32 | sselid 3915 |
. . . . . 6
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑤 ∈ ℝ) |
| 36 | 35 | recnd 11168 |
. . . . 5
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑤 ∈ ℂ) |
| 37 | 33, 34, 36 | npncand 11524 |
. . . 4
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → ((𝑢 − 𝑣) + (𝑣 − 𝑤)) = (𝑢 − 𝑤)) |
| 38 | 24 | simprd 497 |
. . . . 5
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑢 − 𝑣) ∈ ℚ) |
| 39 | 30 | simprd 497 |
. . . . 5
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑣 − 𝑤) ∈ ℚ) |
| 40 | | qaddcl 12910 |
. . . . 5
⊢ (((𝑢 − 𝑣) ∈ ℚ ∧ (𝑣 − 𝑤) ∈ ℚ) → ((𝑢 − 𝑣) + (𝑣 − 𝑤)) ∈ ℚ) |
| 41 | 38, 39, 40 | syl2anc 591 |
. . . 4
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → ((𝑢 − 𝑣) + (𝑣 − 𝑤)) ∈ ℚ) |
| 42 | 37, 41 | eqeltrrd 2842 |
. . 3
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑢 − 𝑤) ∈ ℚ) |
| 43 | | oveq12 7369 |
. . . . 5
⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑤) → (𝑥 − 𝑦) = (𝑢 − 𝑤)) |
| 44 | 43 | eleq1d 2826 |
. . . 4
⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑤) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑢 − 𝑤) ∈ ℚ)) |
| 45 | 44, 1 | brab2a 5714 |
. . 3
⊢ (𝑢 ∼ 𝑤 ↔ ((𝑢 ∈ (0[,]1) ∧ 𝑤 ∈ (0[,]1)) ∧ (𝑢 − 𝑤) ∈ ℚ)) |
| 46 | 26, 32, 42, 45 | syl21anbrc 1352 |
. 2
⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑢 ∼ 𝑤) |
| 47 | 7 | subidd 11488 |
. . . . . 6
⊢ (𝑢 ∈ (0[,]1) → (𝑢 − 𝑢) = 0) |
| 48 | | 0z 12530 |
. . . . . . 7
⊢ 0 ∈
ℤ |
| 49 | | zq 12899 |
. . . . . . 7
⊢ (0 ∈
ℤ → 0 ∈ ℚ) |
| 50 | 48, 49 | ax-mp 5 |
. . . . . 6
⊢ 0 ∈
ℚ |
| 51 | 47, 50 | eqeltrdi 2849 |
. . . . 5
⊢ (𝑢 ∈ (0[,]1) → (𝑢 − 𝑢) ∈ ℚ) |
| 52 | 51 | adantr 482 |
. . . 4
⊢ ((𝑢 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) → (𝑢 − 𝑢) ∈ ℚ) |
| 53 | 52 | pm4.71i 565 |
. . 3
⊢ ((𝑢 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ↔ ((𝑢 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ∧ (𝑢 − 𝑢) ∈ ℚ)) |
| 54 | | pm4.24 569 |
. . 3
⊢ (𝑢 ∈ (0[,]1) ↔ (𝑢 ∈ (0[,]1) ∧ 𝑢 ∈
(0[,]1))) |
| 55 | | oveq12 7369 |
. . . . 5
⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑢) → (𝑥 − 𝑦) = (𝑢 − 𝑢)) |
| 56 | 55 | eleq1d 2826 |
. . . 4
⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑢) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑢 − 𝑢) ∈ ℚ)) |
| 57 | 56, 1 | brab2a 5714 |
. . 3
⊢ (𝑢 ∼ 𝑢 ↔ ((𝑢 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ∧ (𝑢 − 𝑢) ∈ ℚ)) |
| 58 | 53, 54, 57 | 3bitr4i 305 |
. 2
⊢ (𝑢 ∈ (0[,]1) ↔ 𝑢 ∼ 𝑢) |
| 59 | 2, 23, 46, 58 | iseri 8665 |
1
⊢ ∼ Er
(0[,]1) |