Proof of Theorem replimt
| Step | Hyp | Ref
| Expression |
| 1 | | cleqid 1102 |
. . . . . 6
⊢ (ℑ ‘A) = (ℑ ‘A) |
| 2 | | imclt 4797 |
. . . . . . 7
⊢ (A
∈ ℂ → (ℑ ‘A)
∈ ℝ) |
| 3 | | opreq1 3006 |
. . . . . . . . . . . . 13
⊢ (y =
(ℑ ‘A) → (y · i) = ((ℑ ‘A) · i)) |
| 4 | 3 | opreq2d 3013 |
. . . . . . . . . . . 12
⊢ (y =
(ℑ ‘A) → (x + (y ·
i)) = (x + ((ℑ ‘A) · i))) |
| 5 | 4 | cleq2d 1112 |
. . . . . . . . . . 11
⊢ (y =
(ℑ ‘A) → (A = (x +
(y · i)) ↔ A = (x +
((ℑ ‘A) ·
i)))) |
| 6 | 5 | birexdv 1220 |
. . . . . . . . . 10
⊢ (y =
(ℑ ‘A) → (∃x ∈ ℝ A = (x +
(y · i)) ↔
∃x ∈ ℝ A = (x +
((ℑ ‘A) ·
i)))) |
| 7 | | cleq2 1110 |
. . . . . . . . . 10
⊢ (y =
(ℑ ‘A) → ((ℑ
‘A) = y ↔ (ℑ ‘A) = (ℑ ‘A))) |
| 8 | 6, 7 | bibi12d 477 |
. . . . . . . . 9
⊢ (y =
(ℑ ‘A) → ((∃x ∈ ℝ A = (x +
(y · i)) ↔ (ℑ
‘A) = y) ↔ (∃x ∈ ℝ A = (x +
((ℑ ‘A) · i))
↔ (ℑ ‘A) = (ℑ
‘A)))) |
| 9 | 8 | imbi2d 464 |
. . . . . . . 8
⊢ (y =
(ℑ ‘A) → ((A ∈ ℂ → (∃x ∈ ℝ A = (x +
(y · i)) ↔ (ℑ
‘A) = y)) ↔ (A
∈ ℂ → (∃x ∈
ℝ A = (x + ((ℑ ‘A) · i)) ↔ (ℑ
‘A) = (ℑ ‘A))))) |
| 10 | | reuuni1 1955 |
. . . . . . . . . . 11
⊢ ((y
∈ ℝ ∧ ∃!y ∈
ℝ ∃x ∈ ℝ A = (x +
(y · i))) →
(∃x ∈ ℝ A = (x +
(y · i)) ↔ ∪{y ∈
ℝ∣∃x ∈ ℝ
A = (x
+ (y · i))} = y)) |
| 11 | | creui 4533 |
. . . . . . . . . . 11
⊢ (A
∈ ℂ → ∃!y ∈
ℝ ∃x ∈ ℝ A = (x +
(y · i))) |
| 12 | 10, 11 | sylan2 346 |
. . . . . . . . . 10
⊢ ((y
∈ ℝ ∧ A ∈ ℂ)
→ (∃x ∈ ℝ A = (x +
(y · i)) ↔ ∪{y ∈
ℝ∣∃x ∈ ℝ
A = (x
+ (y · i))} = y)) |
| 13 | | imvalt 4795 |
. . . . . . . . . . . 12
⊢ (A
∈ ℂ → (ℑ ‘A) =
∪{y ∈
ℝ∣∃x ∈ ℝ
A = (x
+ (y · i))}) |
| 14 | 13 | cleq1d 1109 |
. . . . . . . . . . 11
⊢ (A
∈ ℂ → ((ℑ ‘A) =
y ↔ ∪{y ∈
ℝ∣∃x ∈ ℝ
A = (x
+ (y · i))} = y)) |
| 15 | 14 | adantl 305 |
. . . . . . . . . 10
⊢ ((y
∈ ℝ ∧ A ∈ ℂ)
→ ((ℑ ‘A) = y ↔ ∪{y ∈ ℝ∣∃x ∈ ℝ A = (x +
(y · i))} = y)) |
| 16 | 12, 15 | bitr4d 409 |
. . . . . . . . 9
⊢ ((y
∈ ℝ ∧ A ∈ ℂ)
→ (∃x ∈ ℝ A = (x +
(y · i)) ↔ (ℑ
‘A) = y)) |
| 17 | 16 | exp 291 |
. . . . . . . 8
⊢ (y
∈ ℝ → (A ∈ ℂ
→ (∃x ∈ ℝ A = (x +
(y · i)) ↔ (ℑ
‘A) = y))) |
| 18 | 9, 17 | vtoclga 1387 |
. . . . . . 7
⊢ ((ℑ ‘A) ∈ ℝ → (A ∈ ℂ → (∃x ∈ ℝ A = (x +
((ℑ ‘A) · i))
↔ (ℑ ‘A) = (ℑ
‘A)))) |
| 19 | 2, 18 | mpcom 49 |
. . . . . 6
⊢ (A
∈ ℂ → (∃x ∈
ℝ A = (x + ((ℑ ‘A) · i)) ↔ (ℑ
‘A) = (ℑ ‘A))) |
| 20 | 1, 19 | mpbiri 169 |
. . . . 5
⊢ (A
∈ ℂ → ∃x ∈
ℝ A = (x + ((ℑ ‘A) · i))) |
| 21 | | df-rex 1206 |
. . . . 5
⊢ (∃x ∈ ℝ A = (x +
((ℑ ‘A) · i))
↔ ∃x(x ∈ ℝ ∧ A = (x +
((ℑ ‘A) ·
i)))) |
| 22 | 20, 21 | sylib 173 |
. . . 4
⊢ (A
∈ ℂ → ∃x(x ∈ ℝ ∧ A = (x +
((ℑ ‘A) ·
i)))) |
| 23 | | cleqid 1102 |
. . . . . 6
⊢ (ℜ ‘A) = (ℜ ‘A) |
| 24 | | reclt 4796 |
. . . . . . 7
⊢ (A
∈ ℂ → (ℜ ‘A)
∈ ℝ) |
| 25 | | opreq1 3006 |
. . . . . . . . . . . 12
⊢ (x =
(ℜ ‘A) → (x + (y ·
i)) = ((ℜ ‘A) + (y · i))) |
| 26 | 25 | cleq2d 1112 |
. . . . . . . . . . 11
⊢ (x =
(ℜ ‘A) → (A = (x +
(y · i)) ↔ A = ((ℜ ‘A) + (y ·
i)))) |
| 27 | 26 | birexdv 1220 |
. . . . . . . . . 10
⊢ (x =
(ℜ ‘A) → (∃y ∈ ℝ A = (x +
(y · i)) ↔
∃y ∈ ℝ A = ((ℜ ‘A) + (y ·
i)))) |
| 28 | | cleq2 1110 |
. . . . . . . . . 10
⊢ (x =
(ℜ ‘A) → ((ℜ
‘A) = x ↔ (ℜ ‘A) = (ℜ ‘A))) |
| 29 | 27, 28 | bibi12d 477 |
. . . . . . . . 9
⊢ (x =
(ℜ ‘A) → ((∃y ∈ ℝ A = (x +
(y · i)) ↔ (ℜ
‘A) = x) ↔ (∃y ∈ ℝ A = ((ℜ ‘A) + (y ·
i)) ↔ (ℜ ‘A) =
(ℜ ‘A)))) |
| 30 | 29 | imbi2d 464 |
. . . . . . . 8
⊢ (x =
(ℜ ‘A) → ((A ∈ ℂ → (∃y ∈ ℝ A = (x +
(y · i)) ↔ (ℜ
‘A) = x)) ↔ (A
∈ ℂ → (∃y ∈
ℝ A = ((ℜ ‘A) + (y ·
i)) ↔ (ℜ ‘A) =
(ℜ ‘A))))) |
| 31 | | reuuni1 1955 |
. . . . . . . . . . 11
⊢ ((x
∈ ℝ ∧ ∃!x ∈
ℝ ∃y ∈ ℝ A = (x +
(y · i))) →
(∃y ∈ ℝ A = (x +
(y · i)) ↔ ∪{x ∈
ℝ∣∃y ∈ ℝ
A = (x
+ (y · i))} = x)) |
| 32 | | creur 4532 |
. . . . . . . . . . 11
⊢ (A
∈ ℂ → ∃!x ∈
ℝ ∃y ∈ ℝ A = (x +
(y · i))) |
| 33 | 31, 32 | sylan2 346 |
. . . . . . . . . 10
⊢ ((x
∈ ℝ ∧ A ∈ ℂ)
→ (∃y ∈ ℝ A = (x +
(y · i)) ↔ ∪{x ∈
ℝ∣∃y ∈ ℝ
A = (x
+ (y · i))} = x)) |
| 34 | | revalt 4794 |
. . . . . . . . . . . 12
⊢ (A
∈ ℂ → (ℜ ‘A) =
∪{x ∈
ℝ∣∃y ∈ ℝ
A = (x
+ (y · i))}) |
| 35 | 34 | cleq1d 1109 |
. . . . . . . . . . 11
⊢ (A
∈ ℂ → ((ℜ ‘A) =
x ↔ ∪{x ∈
ℝ∣∃y ∈ ℝ
A = (x
+ (y · i))} = x)) |
| 36 | 35 | adantl 305 |
. . . . . . . . . 10
⊢ ((x
∈ ℝ ∧ A ∈ ℂ)
→ ((ℜ ‘A) = x ↔ ∪{x ∈ ℝ∣∃y ∈ ℝ A = (x +
(y · i))} = x)) |
| 37 | 33, 36 | bitr4d 409 |
. . . . . . . . 9
⊢ ((x
∈ ℝ ∧ A ∈ ℂ)
→ (∃y ∈ ℝ A = (x +
(y · i)) ↔ (ℜ
‘A) = x)) |
| 38 | 37 | exp 291 |
. . . . . . . 8
⊢ (x
∈ ℝ → (A ∈ ℂ
→ (∃y ∈ ℝ A = (x +
(y · i)) ↔ (ℜ
‘A) = x))) |
| 39 | 30, 38 | vtoclga 1387 |
. . . . . . 7
⊢ ((ℜ ‘A) ∈ ℝ → (A ∈ ℂ → (∃y ∈ ℝ A = ((ℜ ‘A) + (y ·
i)) ↔ (ℜ ‘A) =
(ℜ ‘A)))) |
| 40 | 24, 39 | mpcom 49 |
. . . . . 6
⊢ (A
∈ ℂ → (∃y ∈
ℝ A = ((ℜ ‘A) + (y ·
i)) ↔ (ℜ ‘A) =
(ℜ ‘A))) |
| 41 | 23, 40 | mpbiri 169 |
. . . . 5
⊢ (A
∈ ℂ → ∃y ∈
ℝ A = ((ℜ ‘A) + (y ·
i))) |
| 42 | | df-rex 1206 |
. . . . 5
⊢ (∃y ∈ ℝ A = ((ℜ ‘A) + (y ·
i)) ↔ ∃y(y ∈ ℝ ∧ A = ((ℜ ‘A) + (y ·
i)))) |
| 43 | 41, 42 | sylib 173 |
. . . 4
⊢ (A
∈ ℂ → ∃y(y ∈ ℝ ∧ A = ((ℜ ‘A) + (y ·
i)))) |
| 44 | 22, 43 | jca 236 |
. . 3
⊢ (A
∈ ℂ → (∃x(x ∈ ℝ ∧ A = (x +
((ℑ ‘A) · i)))
∧ ∃y(y ∈ ℝ ∧ A = ((ℜ ‘A) + (y ·
i))))) |
| 45 | | an4 388 |
. . . . 5
⊢ (((x
∈ ℝ ∧ y ∈ ℝ)
∧ (A = (x + ((ℑ ‘A) · i)) ∧ A = ((ℜ ‘A) + (y ·
i)))) ↔ ((x ∈ ℝ
∧ A = (x + ((ℑ ‘A) · i))) ∧ (y ∈ ℝ ∧ A = ((ℜ ‘A) + (y ·
i))))) |
| 46 | 45 | bi2ex 734 |
. . . 4
⊢ (∃x∃y((x ∈
ℝ ∧ y ∈ ℝ) ∧
(A = (x
+ ((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i)))) ↔ ∃x∃y((x ∈
ℝ ∧ A = (x + ((ℑ ‘A) · i))) ∧ (y ∈ ℝ ∧ A = ((ℜ ‘A) + (y ·
i))))) |
| 47 | | eeanv 980 |
. . . 4
⊢ (∃x∃y((x ∈
ℝ ∧ A = (x + ((ℑ ‘A) · i))) ∧ (y ∈ ℝ ∧ A = ((ℜ ‘A) + (y ·
i)))) ↔ (∃x(x ∈ ℝ ∧ A = (x +
((ℑ ‘A) · i)))
∧ ∃y(y ∈ ℝ ∧ A = ((ℜ ‘A) + (y ·
i))))) |
| 48 | 46, 47 | bitr 151 |
. . 3
⊢ (∃x∃y((x ∈
ℝ ∧ y ∈ ℝ) ∧
(A = (x
+ ((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i)))) ↔ (∃x(x ∈ ℝ ∧ A = (x +
((ℑ ‘A) · i)))
∧ ∃y(y ∈ ℝ ∧ A = ((ℜ ‘A) + (y ·
i))))) |
| 49 | 44, 48 | sylibr 175 |
. 2
⊢ (A
∈ ℂ → ∃x∃y((x ∈
ℝ ∧ y ∈ ℝ) ∧
(A = (x
+ ((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i))))) |
| 50 | | pm3.26 256 |
. . . . . 6
⊢ ((A =
(x + ((ℑ ‘A) · i)) ∧ A = ((ℜ ‘A) + (y ·
i))) → A = (x + ((ℑ ‘A) · i))) |
| 51 | 50 | ad2antrr 323 |
. . . . 5
⊢ ((A
∈ ℂ ∧ ((x ∈ ℝ
∧ y ∈ ℝ) ∧ (A = (x +
((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i))))) → A = (x + ((ℑ ‘A) · i))) |
| 52 | 2 | a1d 14 |
. . . . . . . . . . . . . 14
⊢ (A
∈ ℂ → (x ∈ ℝ
→ (ℑ ‘A) ∈
ℝ)) |
| 53 | 52 | ancld 246 |
. . . . . . . . . . . . 13
⊢ (A
∈ ℂ → (x ∈ ℝ
→ (x ∈ ℝ ∧ (ℑ
‘A) ∈ ℝ))) |
| 54 | 24 | a1d 14 |
. . . . . . . . . . . . . 14
⊢ (A
∈ ℂ → (y ∈ ℝ
→ (ℜ ‘A) ∈
ℝ)) |
| 55 | 54 | ancrd 247 |
. . . . . . . . . . . . 13
⊢ (A
∈ ℂ → (y ∈ ℝ
→ ((ℜ ‘A) ∈ ℝ
∧ y ∈ ℝ))) |
| 56 | 53, 55 | anim12d 431 |
. . . . . . . . . . . 12
⊢ (A
∈ ℂ → ((x ∈ ℝ
∧ y ∈ ℝ) → ((x ∈ ℝ ∧ (ℑ ‘A) ∈ ℝ) ∧ ((ℜ ‘A) ∈ ℝ ∧ y ∈ ℝ)))) |
| 57 | 56 | imp 277 |
. . . . . . . . . . 11
⊢ ((A
∈ ℂ ∧ (x ∈ ℝ
∧ y ∈ ℝ)) → ((x ∈ ℝ ∧ (ℑ ‘A) ∈ ℝ) ∧ ((ℜ ‘A) ∈ ℝ ∧ y ∈ ℝ))) |
| 58 | | crut 4531 |
. . . . . . . . . . 11
⊢ (((x
∈ ℝ ∧ (ℑ ‘A)
∈ ℝ) ∧ ((ℜ ‘A)
∈ ℝ ∧ y ∈ ℝ))
→ ((x + ((ℑ ‘A) · i)) = ((ℜ ‘A) + (y ·
i)) → (x = (ℜ
‘A) ∧ (ℑ ‘A) = y))) |
| 59 | 57, 58 | syl 12 |
. . . . . . . . . 10
⊢ ((A
∈ ℂ ∧ (x ∈ ℝ
∧ y ∈ ℝ)) → ((x + ((ℑ ‘A) · i)) = ((ℜ ‘A) + (y ·
i)) → (x = (ℜ
‘A) ∧ (ℑ ‘A) = y))) |
| 60 | | cleqid 1102 |
. . . . . . . . . . 11
⊢ A =
A |
| 61 | | cleq12 1113 |
. . . . . . . . . . 11
⊢ ((A =
(x + ((ℑ ‘A) · i)) ∧ A = ((ℜ ‘A) + (y ·
i))) → (A = A ↔ (x +
((ℑ ‘A) · i)) =
((ℜ ‘A) + (y · i)))) |
| 62 | 60, 61 | mpbii 168 |
. . . . . . . . . 10
⊢ ((A =
(x + ((ℑ ‘A) · i)) ∧ A = ((ℜ ‘A) + (y ·
i))) → (x + ((ℑ
‘A) · i)) = ((ℜ
‘A) + (y · i))) |
| 63 | 59, 62 | syl5 22 |
. . . . . . . . 9
⊢ ((A
∈ ℂ ∧ (x ∈ ℝ
∧ y ∈ ℝ)) → ((A = (x +
((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i))) → (x = (ℜ
‘A) ∧ (ℑ ‘A) = y))) |
| 64 | 63 | exp 291 |
. . . . . . . 8
⊢ (A
∈ ℂ → ((x ∈ ℝ
∧ y ∈ ℝ) → ((A = (x +
((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i))) → (x = (ℜ
‘A) ∧ (ℑ ‘A) = y)))) |
| 65 | 64 | imp32 281 |
. . . . . . 7
⊢ ((A
∈ ℂ ∧ ((x ∈ ℝ
∧ y ∈ ℝ) ∧ (A = (x +
((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i))))) → (x = (ℜ
‘A) ∧ (ℑ ‘A) = y)) |
| 66 | 65 | pm3.26d 258 |
. . . . . 6
⊢ ((A
∈ ℂ ∧ ((x ∈ ℝ
∧ y ∈ ℝ) ∧ (A = (x +
((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i))))) → x = (ℜ
‘A)) |
| 67 | 66 | opreq1d 3012 |
. . . . 5
⊢ ((A
∈ ℂ ∧ ((x ∈ ℝ
∧ y ∈ ℝ) ∧ (A = (x +
((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i))))) → (x + ((ℑ
‘A) · i)) = ((ℜ
‘A) + ((ℑ ‘A) · i))) |
| 68 | 51, 67 | eqtrd 1128 |
. . . 4
⊢ ((A
∈ ℂ ∧ ((x ∈ ℝ
∧ y ∈ ℝ) ∧ (A = (x +
((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i))))) → A = ((ℜ
‘A) + ((ℑ ‘A) · i))) |
| 69 | 68 | exp 291 |
. . 3
⊢ (A
∈ ℂ → (((x ∈ ℝ
∧ y ∈ ℝ) ∧ (A = (x +
((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i)))) → A = ((ℜ
‘A) + ((ℑ ‘A) · i)))) |
| 70 | 69 | 19.23advv 955 |
. 2
⊢ (A
∈ ℂ → (∃x∃y((x ∈
ℝ ∧ y ∈ ℝ) ∧
(A = (x
+ ((ℑ ‘A) · i))
∧ A = ((ℜ ‘A) + (y ·
i)))) → A = ((ℜ
‘A) + ((ℑ ‘A) · i)))) |
| 71 | 49, 70 | mpd 46 |
1
⊢ (A
∈ ℂ → A = ((ℜ
‘A) + ((ℑ ‘A) · i))) |