Proof of Theorem pimrecltneg
| Step | Hyp | Ref
| Expression |
| 1 | | pimrecltneg.x |
. . 3
⊢
Ⅎ𝑥𝜑 |
| 2 | | rabidim1 3443 |
. . . . . . . 8
⊢ (𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} → 𝑥 ∈ 𝐴) |
| 3 | 2 | adantl 481 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 𝑥 ∈ 𝐴) |
| 4 | | 1red 11245 |
. . . . . . . . . . 11
⊢ (𝜑 → 1 ∈
ℝ) |
| 5 | | pimrecltneg.c |
. . . . . . . . . . 11
⊢ (𝜑 → 𝐶 ∈ ℝ) |
| 6 | | pimrecltneg.l |
. . . . . . . . . . . 12
⊢ (𝜑 → 𝐶 < 0) |
| 7 | 5, 6 | ltned 11380 |
. . . . . . . . . . 11
⊢ (𝜑 → 𝐶 ≠ 0) |
| 8 | 4, 5, 7 | redivcld 12078 |
. . . . . . . . . 10
⊢ (𝜑 → (1 / 𝐶) ∈ ℝ) |
| 9 | 8 | rexrd 11294 |
. . . . . . . . 9
⊢ (𝜑 → (1 / 𝐶) ∈
ℝ*) |
| 10 | 9 | adantr 480 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → (1 / 𝐶) ∈
ℝ*) |
| 11 | | 0xr 11291 |
. . . . . . . . 9
⊢ 0 ∈
ℝ* |
| 12 | 11 | a1i 11 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 0 ∈
ℝ*) |
| 13 | | pimrecltneg.b |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ) |
| 14 | 2, 13 | sylan2 593 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 𝐵 ∈ ℝ) |
| 15 | | rabidim2 45052 |
. . . . . . . . . 10
⊢ (𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} → (1 / 𝐵) < 𝐶) |
| 16 | 15 | adantl 481 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → (1 / 𝐵) < 𝐶) |
| 17 | 4 | adantr 480 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 1 ∈ ℝ) |
| 18 | | pimrecltneg.n |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ≠ 0) |
| 19 | 3, 18 | syldan 591 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 𝐵 ≠ 0) |
| 20 | 14, 19 | rereccld 12077 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → (1 / 𝐵) ∈ ℝ) |
| 21 | 5 | adantr 480 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 𝐶 ∈ ℝ) |
| 22 | | 0red 11247 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 0 ∈ ℝ) |
| 23 | 6 | adantr 480 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 𝐶 < 0) |
| 24 | 20, 21, 22, 16, 23 | lttrd 11405 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → (1 / 𝐵) < 0) |
| 25 | 14, 19 | reclt0 45347 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → (𝐵 < 0 ↔ (1 / 𝐵) < 0)) |
| 26 | 24, 25 | mpbird 257 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 𝐵 < 0) |
| 27 | 17, 14, 26, 21, 23 | ltdiv23neg 45350 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → ((1 / 𝐵) < 𝐶 ↔ (1 / 𝐶) < 𝐵)) |
| 28 | 16, 27 | mpbid 232 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → (1 / 𝐶) < 𝐵) |
| 29 | 10, 12, 14, 28, 26 | eliood 45456 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 𝐵 ∈ ((1 / 𝐶)(,)0)) |
| 30 | 3, 29 | jca 511 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → (𝑥 ∈ 𝐴 ∧ 𝐵 ∈ ((1 / 𝐶)(,)0))) |
| 31 | | rabid 3442 |
. . . . . 6
⊢ (𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)} ↔ (𝑥 ∈ 𝐴 ∧ 𝐵 ∈ ((1 / 𝐶)(,)0))) |
| 32 | 30, 31 | sylibr 234 |
. . . . 5
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) → 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) |
| 33 | 32 | ex 412 |
. . . 4
⊢ (𝜑 → (𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} → 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)})) |
| 34 | 31 | simplbi 497 |
. . . . . . . 8
⊢ (𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)} → 𝑥 ∈ 𝐴) |
| 35 | 34 | adantl 481 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → 𝑥 ∈ 𝐴) |
| 36 | 9 | adantr 480 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → (1 / 𝐶) ∈
ℝ*) |
| 37 | 11 | a1i 11 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → 0 ∈
ℝ*) |
| 38 | 31 | simprbi 496 |
. . . . . . . . . 10
⊢ (𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)} → 𝐵 ∈ ((1 / 𝐶)(,)0)) |
| 39 | 38 | adantl 481 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → 𝐵 ∈ ((1 / 𝐶)(,)0)) |
| 40 | 36, 37, 39 | ioogtlbd 45508 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → (1 / 𝐶) < 𝐵) |
| 41 | 4 | adantr 480 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → 1 ∈
ℝ) |
| 42 | 5 | adantr 480 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → 𝐶 ∈ ℝ) |
| 43 | 6 | adantr 480 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → 𝐶 < 0) |
| 44 | 35, 13 | syldan 591 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → 𝐵 ∈ ℝ) |
| 45 | 36, 37, 39 | iooltubd 45502 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → 𝐵 < 0) |
| 46 | 41, 42, 43, 44, 45 | ltdiv23neg 45350 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → ((1 / 𝐶) < 𝐵 ↔ (1 / 𝐵) < 𝐶)) |
| 47 | 40, 46 | mpbid 232 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → (1 / 𝐵) < 𝐶) |
| 48 | 35, 47 | jca 511 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → (𝑥 ∈ 𝐴 ∧ (1 / 𝐵) < 𝐶)) |
| 49 | | rabid 3442 |
. . . . . 6
⊢ (𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} ↔ (𝑥 ∈ 𝐴 ∧ (1 / 𝐵) < 𝐶)) |
| 50 | 48, 49 | sylibr 234 |
. . . . 5
⊢ ((𝜑 ∧ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) → 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶}) |
| 51 | 50 | ex 412 |
. . . 4
⊢ (𝜑 → (𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)} → 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶})) |
| 52 | 33, 51 | impbid 212 |
. . 3
⊢ (𝜑 → (𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} ↔ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)})) |
| 53 | 1, 52 | alrimi 2212 |
. 2
⊢ (𝜑 → ∀𝑥(𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} ↔ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)})) |
| 54 | | nfrab1 3441 |
. . 3
⊢
Ⅎ𝑥{𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} |
| 55 | | nfrab1 3441 |
. . 3
⊢
Ⅎ𝑥{𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)} |
| 56 | 54, 55 | cleqf 2926 |
. 2
⊢ ({𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)} ↔ ∀𝑥(𝑥 ∈ {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} ↔ 𝑥 ∈ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)})) |
| 57 | 53, 56 | sylibr 234 |
1
⊢ (𝜑 → {𝑥 ∈ 𝐴 ∣ (1 / 𝐵) < 𝐶} = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ ((1 / 𝐶)(,)0)}) |