Metamath Proof Explorer


Theorem sn-0tie0

Description: Lemma for sn-mul02 . Commuted version of sn-it0e0 . (Contributed by SN, 30-Jun-2024)

Ref Expression
Assertion sn-0tie0 ⊢ 0 ⋅ i = 0

Proof

Step Hyp Ref Expression
1 0cn ⊢ 0 ∈ ℂ
2 ax-icn ⊢ i ∈ ℂ
3 1 2 mulcli ⊢ 0 ⋅ i ∈ ℂ
4 cnre ⊢ 0 ⋅ i ∈ ℂ → ∃ a ∈ ℝ ∃ b ∈ ℝ 0 ⋅ i = a + i ⁢ b
5 simplr ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i = a + i ⁢ b
6 neqne ⊢ ¬ 0 ⋅ i = 0 → 0 ⋅ i ≠ 0
7 6 adantl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ≠ 0
8 simplll ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a ∈ ℝ
9 rernegcl ⊢ a ∈ ℝ → 0 - ℝ a ∈ ℝ
10 8 9 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a ∈ ℝ
11 1red ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 ∈ ℝ
12 10 11 readdcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a + 1 ∈ ℝ
13 ax-rrecex ⊢ 0 - ℝ a + 1 ∈ ℝ ∧ 0 - ℝ a + 1 ≠ 0 → ∃ x ∈ ℝ 0 - ℝ a + 1 ⁢ x = 1
14 12 13 sylan ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 → ∃ x ∈ ℝ 0 - ℝ a + 1 ⁢ x = 1
15 2 a1i ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ∈ ℂ
16 10 recnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a ∈ ℂ
17 1cnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 ∈ ℂ
18 15 16 17 adddid ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ 0 - ℝ a + 1 = i ⁢ 0 - ℝ a + i ⋅ 1
19 sn-it1ei ⊢ i ⋅ 1 = i
20 19 oveq2i ⊢ i ⁢ 0 - ℝ a + i ⋅ 1 = i ⁢ 0 - ℝ a + i
21 18 20 eqtrdi ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ 0 - ℝ a + 1 = i ⁢ 0 - ℝ a + i
22 21 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a + 1 = 0 ⋅ i ⁢ 0 - ℝ a + i
23 0cnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ∈ ℂ
24 15 16 mulcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ 0 - ℝ a ∈ ℂ
25 23 24 15 adddid ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a + i = 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i
26 22 25 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a + 1 = 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i
27 5 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a + 0 ⋅ i = 0 - ℝ a + a + i ⁢ b
28 renegid2 ⊢ a ∈ ℝ → 0 - ℝ a + a = 0
29 28 ad3antrrr ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a + a = 0
30 29 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a + a + i ⁢ b = 0 + i ⁢ b
31 8 recnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a ∈ ℂ
32 simpllr ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → b ∈ ℝ
33 32 recnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → b ∈ ℂ
34 15 33 mulcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ b ∈ ℂ
35 16 31 34 addassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a + a + i ⁢ b = 0 - ℝ a + a + i ⁢ b
36 sn-addlid ⊢ i ⁢ b ∈ ℂ → 0 + i ⁢ b = i ⁢ b
37 34 36 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 + i ⁢ b = i ⁢ b
38 30 35 37 3eqtr3d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a + a + i ⁢ b = i ⁢ b
39 27 38 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a + 0 ⋅ i = i ⁢ b
40 39 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i = 0 ⋅ i ⁢ i ⁢ b
41 3 a1i ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ∈ ℂ
42 41 16 41 adddid ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i = 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i ⁢ 0 ⋅ i
43 23 15 16 mulassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a = 0 ⋅ i ⁢ 0 - ℝ a
44 41 23 15 mulassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⋅ 0 ⁢ i = 0 ⋅ i ⁢ 0 ⋅ i
45 sn-mul01 ⊢ 0 ⋅ i ∈ ℂ → 0 ⋅ i ⋅ 0 = 0
46 41 45 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⋅ 0 = 0
47 46 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⋅ 0 ⁢ i = 0 ⋅ i
48 44 47 eqtr3d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 ⋅ i = 0 ⋅ i
49 43 48 oveq12d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i ⁢ 0 ⋅ i = 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i
50 42 49 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i = 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i
51 23 15 34 mulassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ i ⁢ b = 0 ⋅ i ⁢ i ⁢ b
52 15 15 33 mulassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ i ⁢ b = i ⁢ i ⁢ b
53 reixi ⊢ i ⁢ i = 0 - ℝ 1
54 1re ⊢ 1 ∈ ℝ
55 rernegcl ⊢ 1 ∈ ℝ → 0 - ℝ 1 ∈ ℝ
56 54 55 ax-mp ⊢ 0 - ℝ 1 ∈ ℝ
57 53 56 eqeltri ⊢ i ⁢ i ∈ ℝ
58 57 a1i ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ i ∈ ℝ
59 58 32 remulcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ i ⁢ b ∈ ℝ
60 52 59 eqeltrrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ i ⁢ b ∈ ℝ
61 remul02 ⊢ i ⁢ i ⁢ b ∈ ℝ → 0 ⋅ i ⁢ i ⁢ b = 0
62 60 61 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ i ⁢ b = 0
63 51 62 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ i ⁢ b = 0
64 40 50 63 3eqtr3d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a + 0 ⋅ i = 0
65 26 64 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 0 - ℝ a + 1 = 0
66 65 ad2antrr ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 ⋅ i ⁢ 0 - ℝ a + 1 = 0
67 66 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 ⋅ i ⁢ 0 - ℝ a + 1 ⁢ x = 0 ⋅ x
68 0cnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 ∈ ℂ
69 2 a1i ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → i ∈ ℂ
70 10 ad2antrr ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 - ℝ a ∈ ℝ
71 70 recnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 - ℝ a ∈ ℂ
72 1cnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 1 ∈ ℂ
73 71 72 addcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 - ℝ a + 1 ∈ ℂ
74 69 73 mulcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → i ⁢ 0 - ℝ a + 1 ∈ ℂ
75 simprl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → x ∈ ℝ
76 75 recnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → x ∈ ℂ
77 68 74 76 mulassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 ⋅ i ⁢ 0 - ℝ a + 1 ⁢ x = 0 ⋅ i ⁢ 0 - ℝ a + 1 ⁢ x
78 69 73 76 mulassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → i ⁢ 0 - ℝ a + 1 ⁢ x = i ⁢ 0 - ℝ a + 1 ⁢ x
79 simprr ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 - ℝ a + 1 ⁢ x = 1
80 79 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → i ⁢ 0 - ℝ a + 1 ⁢ x = i ⋅ 1
81 80 19 eqtrdi ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → i ⁢ 0 - ℝ a + 1 ⁢ x = i
82 78 81 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → i ⁢ 0 - ℝ a + 1 ⁢ x = i
83 82 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 ⋅ i ⁢ 0 - ℝ a + 1 ⁢ x = 0 ⋅ i
84 77 83 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 ⋅ i ⁢ 0 - ℝ a + 1 ⁢ x = 0 ⋅ i
85 remul02 ⊢ x ∈ ℝ → 0 ⋅ x = 0
86 75 85 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 ⋅ x = 0
87 67 84 86 3eqtr3d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 ∧ x ∈ ℝ ∧ 0 - ℝ a + 1 ⁢ x = 1 → 0 ⋅ i = 0
88 14 87 rexlimddv ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 0 - ℝ a + 1 ≠ 0 → 0 ⋅ i = 0
89 88 ex ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a + 1 ≠ 0 → 0 ⋅ i = 0
90 89 necon1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ≠ 0 → 0 - ℝ a + 1 = 0
91 7 90 mpd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ a + 1 = 0
92 91 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a + 0 - ℝ a + 1 = a + 0
93 31 16 17 addassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a + 0 - ℝ a + 1 = a + 0 - ℝ a + 1
94 renegid ⊢ a ∈ ℝ → a + 0 - ℝ a = 0
95 8 94 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a + 0 - ℝ a = 0
96 95 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a + 0 - ℝ a + 1 = 0 + 1
97 readdlid ⊢ 1 ∈ ℝ → 0 + 1 = 1
98 54 97 ax-mp ⊢ 0 + 1 = 1
99 96 98 eqtrdi ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a + 0 - ℝ a + 1 = 1
100 93 99 eqtr3d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a + 0 - ℝ a + 1 = 1
101 readdrid ⊢ a ∈ ℝ → a + 0 = a
102 8 101 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a + 0 = a
103 92 100 102 3eqtr3rd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a = 1
104 rernegcl ⊢ b ∈ ℝ → 0 - ℝ b ∈ ℝ
105 32 104 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ b ∈ ℝ
106 11 105 readdcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + 0 - ℝ b ∈ ℝ
107 ax-rrecex ⊢ 1 + 0 - ℝ b ∈ ℝ ∧ 1 + 0 - ℝ b ≠ 0 → ∃ y ∈ ℝ 1 + 0 - ℝ b ⁢ y = 1
108 106 107 sylan ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 → ∃ y ∈ ℝ 1 + 0 - ℝ b ⁢ y = 1
109 105 recnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ b ∈ ℂ
110 15 109 mulcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ 0 - ℝ b ∈ ℂ
111 23 15 110 adddid ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i + i ⁢ 0 - ℝ b = 0 ⋅ i + 0 ⋅ i ⁢ 0 - ℝ b
112 0re ⊢ 0 ∈ ℝ
113 remul02 ⊢ 0 ∈ ℝ → 0 ⋅ 0 = 0
114 112 113 ax-mp ⊢ 0 ⋅ 0 = 0
115 114 oveq1i ⊢ 0 ⋅ 0 ⁢ i = 0 ⋅ i
116 1 1 2 mulassi ⊢ 0 ⋅ 0 ⁢ i = 0 ⋅ 0 ⋅ i
117 115 116 eqtr3i ⊢ 0 ⋅ i = 0 ⋅ 0 ⋅ i
118 117 a1i ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i = 0 ⋅ 0 ⋅ i
119 118 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i + 0 ⋅ i ⁢ 0 - ℝ b = 0 ⋅ 0 ⋅ i + 0 ⋅ i ⁢ 0 - ℝ b
120 111 119 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i + i ⁢ 0 - ℝ b = 0 ⋅ 0 ⋅ i + 0 ⋅ i ⁢ 0 - ℝ b
121 15 17 109 adddid ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ 1 + 0 - ℝ b = i ⋅ 1 + i ⁢ 0 - ℝ b
122 19 a1i ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⋅ 1 = i
123 122 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⋅ 1 + i ⁢ 0 - ℝ b = i + i ⁢ 0 - ℝ b
124 121 123 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ 1 + 0 - ℝ b = i + i ⁢ 0 - ℝ b
125 124 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 1 + 0 - ℝ b = 0 ⋅ i + i ⁢ 0 - ℝ b
126 23 41 110 adddid ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ 0 ⋅ i + i ⁢ 0 - ℝ b = 0 ⋅ 0 ⋅ i + 0 ⋅ i ⁢ 0 - ℝ b
127 120 125 126 3eqtr4d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 1 + 0 - ℝ b = 0 ⋅ 0 ⋅ i + i ⁢ 0 - ℝ b
128 103 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a + i ⁢ b = 1 + i ⁢ b
129 5 128 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i = 1 + i ⁢ b
130 129 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i + i ⁢ 0 - ℝ b = 1 + i ⁢ b + i ⁢ 0 - ℝ b
131 17 34 110 addassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + i ⁢ b + i ⁢ 0 - ℝ b = 1 + i ⁢ b + i ⁢ 0 - ℝ b
132 renegid ⊢ b ∈ ℝ → b + 0 - ℝ b = 0
133 32 132 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → b + 0 - ℝ b = 0
134 133 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ b + 0 - ℝ b = i ⋅ 0
135 15 33 109 adddid ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ b + 0 - ℝ b = i ⁢ b + i ⁢ 0 - ℝ b
136 sn-mul01 ⊢ i ∈ ℂ → i ⋅ 0 = 0
137 2 136 mp1i ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⋅ 0 = 0
138 134 135 137 3eqtr3d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ b + i ⁢ 0 - ℝ b = 0
139 138 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + i ⁢ b + i ⁢ 0 - ℝ b = 1 + 0
140 readdrid ⊢ 1 ∈ ℝ → 1 + 0 = 1
141 54 140 ax-mp ⊢ 1 + 0 = 1
142 139 141 eqtrdi ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + i ⁢ b + i ⁢ 0 - ℝ b = 1
143 131 142 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + i ⁢ b + i ⁢ 0 - ℝ b = 1
144 130 143 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i + i ⁢ 0 - ℝ b = 1
145 144 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ 0 ⋅ i + i ⁢ 0 - ℝ b = 0 ⋅ 1
146 127 145 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 1 + 0 - ℝ b = 0 ⋅ 1
147 ax-1rid ⊢ 0 ∈ ℝ → 0 ⋅ 1 = 0
148 112 147 ax-mp ⊢ 0 ⋅ 1 = 0
149 146 148 eqtrdi ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ⁢ 1 + 0 - ℝ b = 0
150 149 ad2antrr ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 0 ⋅ i ⁢ 1 + 0 - ℝ b = 0
151 150 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 0 ⋅ i ⁢ 1 + 0 - ℝ b ⁢ y = 0 ⋅ y
152 0cnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 0 ∈ ℂ
153 2 a1i ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → i ∈ ℂ
154 1cnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 1 ∈ ℂ
155 109 ad2antrr ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 0 - ℝ b ∈ ℂ
156 154 155 addcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 1 + 0 - ℝ b ∈ ℂ
157 153 156 mulcld ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → i ⁢ 1 + 0 - ℝ b ∈ ℂ
158 simprl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → y ∈ ℝ
159 158 recnd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → y ∈ ℂ
160 152 157 159 mulassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 0 ⋅ i ⁢ 1 + 0 - ℝ b ⁢ y = 0 ⋅ i ⁢ 1 + 0 - ℝ b ⁢ y
161 153 156 159 mulassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → i ⁢ 1 + 0 - ℝ b ⁢ y = i ⁢ 1 + 0 - ℝ b ⁢ y
162 simprr ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 1 + 0 - ℝ b ⁢ y = 1
163 162 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → i ⁢ 1 + 0 - ℝ b ⁢ y = i ⋅ 1
164 163 19 eqtrdi ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → i ⁢ 1 + 0 - ℝ b ⁢ y = i
165 161 164 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → i ⁢ 1 + 0 - ℝ b ⁢ y = i
166 165 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 0 ⋅ i ⁢ 1 + 0 - ℝ b ⁢ y = 0 ⋅ i
167 160 166 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 0 ⋅ i ⁢ 1 + 0 - ℝ b ⁢ y = 0 ⋅ i
168 remul02 ⊢ y ∈ ℝ → 0 ⋅ y = 0
169 158 168 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 0 ⋅ y = 0
170 151 167 169 3eqtr3d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 ∧ y ∈ ℝ ∧ 1 + 0 - ℝ b ⁢ y = 1 → 0 ⋅ i = 0
171 108 170 rexlimddv ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 ∧ 1 + 0 - ℝ b ≠ 0 → 0 ⋅ i = 0
172 171 ex ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + 0 - ℝ b ≠ 0 → 0 ⋅ i = 0
173 172 necon1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i ≠ 0 → 1 + 0 - ℝ b = 0
174 7 173 mpd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + 0 - ℝ b = 0
175 174 oveq1d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + 0 - ℝ b + b = 0 + b
176 17 109 33 addassd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + 0 - ℝ b + b = 1 + 0 - ℝ b + b
177 renegid2 ⊢ b ∈ ℝ → 0 - ℝ b + b = 0
178 32 177 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 - ℝ b + b = 0
179 178 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + 0 - ℝ b + b = 1 + 0
180 179 141 eqtrdi ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + 0 - ℝ b + b = 1
181 176 180 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 1 + 0 - ℝ b + b = 1
182 readdlid ⊢ b ∈ ℝ → 0 + b = b
183 32 182 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 + b = b
184 175 181 183 3eqtr3rd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → b = 1
185 184 oveq2d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → i ⁢ b = i ⋅ 1
186 103 185 oveq12d ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → a + i ⁢ b = 1 + i ⋅ 1
187 5 186 eqtrd ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i = 1 + i ⋅ 1
188 19 oveq2i ⊢ 1 + i ⋅ 1 = 1 + i
189 188 eqeq2i ⊢ 0 ⋅ i = 1 + i ⋅ 1 ↔ 0 ⋅ i = 1 + i
190 oveq2 ⊢ 0 ⋅ i = 1 + i → i ⁢ i ⁢ i ⁢ 0 ⋅ i = i ⁢ i ⁢ i ⁢ 1 + i
191 2 2 mulcli ⊢ i ⁢ i ∈ ℂ
192 191 2 mulcli ⊢ i ⁢ i ⁢ i ∈ ℂ
193 192 1 2 mulassi ⊢ i ⁢ i ⁢ i ⋅ 0 ⁢ i = i ⁢ i ⁢ i ⁢ 0 ⋅ i
194 sn-mul01 ⊢ i ⁢ i ⁢ i ∈ ℂ → i ⁢ i ⁢ i ⋅ 0 = 0
195 192 194 ax-mp ⊢ i ⁢ i ⁢ i ⋅ 0 = 0
196 195 oveq1i ⊢ i ⁢ i ⁢ i ⋅ 0 ⁢ i = 0 ⋅ i
197 193 196 eqtr3i ⊢ i ⁢ i ⁢ i ⁢ 0 ⋅ i = 0 ⋅ i
198 ax-1cn ⊢ 1 ∈ ℂ
199 192 198 2 adddii ⊢ i ⁢ i ⁢ i ⁢ 1 + i = i ⁢ i ⁢ i ⋅ 1 + i ⁢ i ⁢ i ⁢ i
200 191 2 198 mulassi ⊢ i ⁢ i ⁢ i ⋅ 1 = i ⁢ i ⁢ i ⋅ 1
201 19 oveq2i ⊢ i ⁢ i ⁢ i ⋅ 1 = i ⁢ i ⁢ i
202 200 201 eqtri ⊢ i ⁢ i ⁢ i ⋅ 1 = i ⁢ i ⁢ i
203 191 2 2 mulassi ⊢ i ⁢ i ⁢ i ⁢ i = i ⁢ i ⁢ i ⁢ i
204 rei4 ⊢ i ⁢ i ⁢ i ⁢ i = 1
205 203 204 eqtri ⊢ i ⁢ i ⁢ i ⁢ i = 1
206 202 205 oveq12i ⊢ i ⁢ i ⁢ i ⋅ 1 + i ⁢ i ⁢ i ⁢ i = i ⁢ i ⁢ i + 1
207 199 206 eqtri ⊢ i ⁢ i ⁢ i ⁢ 1 + i = i ⁢ i ⁢ i + 1
208 190 197 207 3eqtr3g ⊢ 0 ⋅ i = 1 + i → 0 ⋅ i = i ⁢ i ⁢ i + 1
209 54 54 readdcli ⊢ 1 + 1 ∈ ℝ
210 df-2 ⊢ 2 = 1 + 1
211 sn-0ne2 ⊢ 0 ≠ 2
212 211 necomi ⊢ 2 ≠ 0
213 210 212 eqnetrri ⊢ 1 + 1 ≠ 0
214 ax-rrecex ⊢ 1 + 1 ∈ ℝ ∧ 1 + 1 ≠ 0 → ∃ z ∈ ℝ 1 + 1 ⁢ z = 1
215 209 213 214 mp2an ⊢ ∃ z ∈ ℝ 1 + 1 ⁢ z = 1
216 192 198 addcli ⊢ i ⁢ i ⁢ i + 1 ∈ ℂ
217 198 2 216 addassi ⊢ 1 + i + i ⁢ i ⁢ i + 1 = 1 + i + i ⁢ i ⁢ i + 1
218 2 192 198 addassi ⊢ i + i ⁢ i ⁢ i + 1 = i + i ⁢ i ⁢ i + 1
219 218 oveq2i ⊢ 1 + i + i ⁢ i ⁢ i + 1 = 1 + i + i ⁢ i ⁢ i + 1
220 2 2 2 mulassi ⊢ i ⁢ i ⁢ i = i ⁢ i ⁢ i
221 220 oveq2i ⊢ i + i ⁢ i ⁢ i = i + i ⁢ i ⁢ i
222 ipiiie0 ⊢ i + i ⁢ i ⁢ i = 0
223 221 222 eqtri ⊢ i + i ⁢ i ⁢ i = 0
224 223 oveq1i ⊢ i + i ⁢ i ⁢ i + 1 = 0 + 1
225 224 98 eqtri ⊢ i + i ⁢ i ⁢ i + 1 = 1
226 225 oveq2i ⊢ 1 + i + i ⁢ i ⁢ i + 1 = 1 + 1
227 217 219 226 3eqtr2i ⊢ 1 + i + i ⁢ i ⁢ i + 1 = 1 + 1
228 227 a1i ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 1 + i + i ⁢ i ⁢ i + 1 = 1 + 1
229 3 198 198 adddii ⊢ 0 ⋅ i ⁢ 1 + 1 = 0 ⋅ i ⋅ 1 + 0 ⋅ i ⋅ 1
230 1 2 198 mulassi ⊢ 0 ⋅ i ⋅ 1 = 0 ⋅ i ⋅ 1
231 19 oveq2i ⊢ 0 ⋅ i ⋅ 1 = 0 ⋅ i
232 230 231 eqtri ⊢ 0 ⋅ i ⋅ 1 = 0 ⋅ i
233 simpl ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 0 ⋅ i = 1 + i
234 232 233 eqtrid ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 0 ⋅ i ⋅ 1 = 1 + i
235 simpr ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 0 ⋅ i = i ⁢ i ⁢ i + 1
236 232 235 eqtrid ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 0 ⋅ i ⋅ 1 = i ⁢ i ⁢ i + 1
237 234 236 oveq12d ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 0 ⋅ i ⋅ 1 + 0 ⋅ i ⋅ 1 = 1 + i + i ⁢ i ⁢ i + 1
238 229 237 eqtrid ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 0 ⋅ i ⁢ 1 + 1 = 1 + i + i ⁢ i ⁢ i + 1
239 remullid ⊢ 1 + 1 ∈ ℝ → 1 ⁢ 1 + 1 = 1 + 1
240 209 239 mp1i ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 1 ⁢ 1 + 1 = 1 + 1
241 228 238 240 3eqtr4d ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 0 ⋅ i ⁢ 1 + 1 = 1 ⁢ 1 + 1
242 241 oveq1d ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 0 ⋅ i ⁢ 1 + 1 ⁢ z = 1 ⁢ 1 + 1 ⁢ z
243 242 adantr ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 0 ⋅ i ⁢ 1 + 1 ⁢ z = 1 ⁢ 1 + 1 ⁢ z
244 3 a1i ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 0 ⋅ i ∈ ℂ
245 1cnd ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 1 ∈ ℂ
246 245 245 addcld ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 1 + 1 ∈ ℂ
247 simprl ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → z ∈ ℝ
248 247 recnd ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → z ∈ ℂ
249 244 246 248 mulassd ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 0 ⋅ i ⁢ 1 + 1 ⁢ z = 0 ⋅ i ⁢ 1 + 1 ⁢ z
250 simprr ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 1 + 1 ⁢ z = 1
251 250 oveq2d ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 0 ⋅ i ⁢ 1 + 1 ⁢ z = 0 ⋅ i ⋅ 1
252 251 232 eqtrdi ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 0 ⋅ i ⁢ 1 + 1 ⁢ z = 0 ⋅ i
253 249 252 eqtrd ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 0 ⋅ i ⁢ 1 + 1 ⁢ z = 0 ⋅ i
254 245 246 248 mulassd ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 1 ⁢ 1 + 1 ⁢ z = 1 ⁢ 1 + 1 ⁢ z
255 250 oveq2d ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 1 ⁢ 1 + 1 ⁢ z = 1 ⋅ 1
256 1t1e1ALT ⊢ 1 ⋅ 1 = 1
257 255 256 eqtrdi ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 1 ⁢ 1 + 1 ⁢ z = 1
258 254 257 eqtrd ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 1 ⁢ 1 + 1 ⁢ z = 1
259 243 253 258 3eqtr3d ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 ∧ z ∈ ℝ ∧ 1 + 1 ⁢ z = 1 → 0 ⋅ i = 1
260 259 rexlimdvaa ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → ∃ z ∈ ℝ 1 + 1 ⁢ z = 1 → 0 ⋅ i = 1
261 215 260 mpi ⊢ 0 ⋅ i = 1 + i ∧ 0 ⋅ i = i ⁢ i ⁢ i + 1 → 0 ⋅ i = 1
262 208 261 mpdan ⊢ 0 ⋅ i = 1 + i → 0 ⋅ i = 1
263 189 262 sylbi ⊢ 0 ⋅ i = 1 + i ⋅ 1 → 0 ⋅ i = 1
264 oveq2 ⊢ 0 ⋅ i = 1 → 0 ⋅ 0 ⋅ i = 0 ⋅ 1
265 116 115 eqtr3i ⊢ 0 ⋅ 0 ⋅ i = 0 ⋅ i
266 264 265 148 3eqtr3g ⊢ 0 ⋅ i = 1 → 0 ⋅ i = 0
267 263 266 syl ⊢ 0 ⋅ i = 1 + i ⋅ 1 → 0 ⋅ i = 0
268 187 267 syl ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b ∧ ¬ 0 ⋅ i = 0 → 0 ⋅ i = 0
269 268 pm2.18da ⊢ a ∈ ℝ ∧ b ∈ ℝ ∧ 0 ⋅ i = a + i ⁢ b → 0 ⋅ i = 0
270 269 ex ⊢ a ∈ ℝ ∧ b ∈ ℝ → 0 ⋅ i = a + i ⁢ b → 0 ⋅ i = 0
271 270 rexlimivv ⊢ ∃ a ∈ ℝ ∃ b ∈ ℝ 0 ⋅ i = a + i ⁢ b → 0 ⋅ i = 0
272 3 4 271 mp2b ⊢ 0 ⋅ i = 0