Proof of Theorem ipdirilem
| Step | Hyp | Ref
| Expression |
| 1 | | 2thalfe1 12343 |
. . . . . 6
⊢ (2
· (1 / 2)) = 1 |
| 2 | 1 | oveq1i 7420 |
. . . . 5
⊢ ((2
· (1 / 2))𝑆(𝐴𝐺𝐵)) = (1𝑆(𝐴𝐺𝐵)) |
| 3 | | ip1i.9 |
. . . . . . 7
⊢ 𝑈 ∈
CPreHilOLD |
| 4 | 3 | phnvi 31168 |
. . . . . 6
⊢ 𝑈 ∈ NrmCVec |
| 5 | | 2cn 12311 |
. . . . . . 7
⊢ 2 ∈
ℂ |
| 6 | | halfcn 12453 |
. . . . . . 7
⊢ (1 / 2)
∈ ℂ |
| 7 | | ipdiri.8 |
. . . . . . . 8
⊢ 𝐴 ∈ 𝑋 |
| 8 | | ipdiri.9 |
. . . . . . . 8
⊢ 𝐵 ∈ 𝑋 |
| 9 | | ip1i.1 |
. . . . . . . . 9
⊢ 𝑋 = (BaseSet‘𝑈) |
| 10 | | ip1i.2 |
. . . . . . . . 9
⊢ 𝐺 = ( +𝑣
‘𝑈) |
| 11 | 9, 10 | nvgcl 30972 |
. . . . . . . 8
⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝐺𝐵) ∈ 𝑋) |
| 12 | 4, 7, 8, 11 | mp3an 1490 |
. . . . . . 7
⊢ (𝐴𝐺𝐵) ∈ 𝑋 |
| 13 | 5, 6, 12 | 3pm3.2i 1358 |
. . . . . 6
⊢ (2 ∈
ℂ ∧ (1 / 2) ∈ ℂ ∧ (𝐴𝐺𝐵) ∈ 𝑋) |
| 14 | | ip1i.4 |
. . . . . . 7
⊢ 𝑆 = (
·𝑠OLD ‘𝑈) |
| 15 | 9, 14 | nvsass 30980 |
. . . . . 6
⊢ ((𝑈 ∈ NrmCVec ∧ (2 ∈
ℂ ∧ (1 / 2) ∈ ℂ ∧ (𝐴𝐺𝐵) ∈ 𝑋)) → ((2 · (1 / 2))𝑆(𝐴𝐺𝐵)) = (2𝑆((1 / 2)𝑆(𝐴𝐺𝐵)))) |
| 16 | 4, 13, 15 | mp2an 704 |
. . . . 5
⊢ ((2
· (1 / 2))𝑆(𝐴𝐺𝐵)) = (2𝑆((1 / 2)𝑆(𝐴𝐺𝐵))) |
| 17 | 9, 14 | nvsid 30979 |
. . . . . 6
⊢ ((𝑈 ∈ NrmCVec ∧ (𝐴𝐺𝐵) ∈ 𝑋) → (1𝑆(𝐴𝐺𝐵)) = (𝐴𝐺𝐵)) |
| 18 | 4, 12, 17 | mp2an 704 |
. . . . 5
⊢ (1𝑆(𝐴𝐺𝐵)) = (𝐴𝐺𝐵) |
| 19 | 2, 16, 18 | 3eqtr3i 2794 |
. . . 4
⊢ (2𝑆((1 / 2)𝑆(𝐴𝐺𝐵))) = (𝐴𝐺𝐵) |
| 20 | 19 | oveq1i 7420 |
. . 3
⊢ ((2𝑆((1 / 2)𝑆(𝐴𝐺𝐵)))𝑃𝐶) = ((𝐴𝐺𝐵)𝑃𝐶) |
| 21 | | ip1i.7 |
. . . 4
⊢ 𝑃 =
(·𝑖OLD‘𝑈) |
| 22 | 9, 14 | nvscl 30978 |
. . . . 5
⊢ ((𝑈 ∈ NrmCVec ∧ (1 / 2)
∈ ℂ ∧ (𝐴𝐺𝐵) ∈ 𝑋) → ((1 / 2)𝑆(𝐴𝐺𝐵)) ∈ 𝑋) |
| 23 | 4, 6, 12, 22 | mp3an 1490 |
. . . 4
⊢ ((1 /
2)𝑆(𝐴𝐺𝐵)) ∈ 𝑋 |
| 24 | | ipdiri.10 |
. . . 4
⊢ 𝐶 ∈ 𝑋 |
| 25 | 9, 10, 14, 21, 3, 23, 24 | ip2i 31180 |
. . 3
⊢ ((2𝑆((1 / 2)𝑆(𝐴𝐺𝐵)))𝑃𝐶) = (2 · (((1 / 2)𝑆(𝐴𝐺𝐵))𝑃𝐶)) |
| 26 | 20, 25 | eqtr3i 2788 |
. 2
⊢ ((𝐴𝐺𝐵)𝑃𝐶) = (2 · (((1 / 2)𝑆(𝐴𝐺𝐵))𝑃𝐶)) |
| 27 | | neg1cn 12198 |
. . . . . 6
⊢ -1 ∈
ℂ |
| 28 | 9, 14 | nvscl 30978 |
. . . . . 6
⊢ ((𝑈 ∈ NrmCVec ∧ -1 ∈
ℂ ∧ 𝐵 ∈
𝑋) → (-1𝑆𝐵) ∈ 𝑋) |
| 29 | 4, 27, 8, 28 | mp3an 1490 |
. . . . 5
⊢ (-1𝑆𝐵) ∈ 𝑋 |
| 30 | 9, 10 | nvgcl 30972 |
. . . . 5
⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ (-1𝑆𝐵) ∈ 𝑋) → (𝐴𝐺(-1𝑆𝐵)) ∈ 𝑋) |
| 31 | 4, 7, 29, 30 | mp3an 1490 |
. . . 4
⊢ (𝐴𝐺(-1𝑆𝐵)) ∈ 𝑋 |
| 32 | 9, 14 | nvscl 30978 |
. . . 4
⊢ ((𝑈 ∈ NrmCVec ∧ (1 / 2)
∈ ℂ ∧ (𝐴𝐺(-1𝑆𝐵)) ∈ 𝑋) → ((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵))) ∈ 𝑋) |
| 33 | 4, 6, 31, 32 | mp3an 1490 |
. . 3
⊢ ((1 /
2)𝑆(𝐴𝐺(-1𝑆𝐵))) ∈ 𝑋 |
| 34 | 9, 10, 14, 21, 3, 23, 33, 24 | ip1i 31179 |
. 2
⊢ (((((1 /
2)𝑆(𝐴𝐺𝐵))𝐺((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵))))𝑃𝐶) + ((((1 / 2)𝑆(𝐴𝐺𝐵))𝐺(-1𝑆((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵)))))𝑃𝐶)) = (2 · (((1 / 2)𝑆(𝐴𝐺𝐵))𝑃𝐶)) |
| 35 | | eqid 2763 |
. . . . . . . . . . . 12
⊢
(1st ‘𝑈) = (1st ‘𝑈) |
| 36 | 35 | nvvc 30967 |
. . . . . . . . . . 11
⊢ (𝑈 ∈ NrmCVec →
(1st ‘𝑈)
∈ CVecOLD) |
| 37 | 4, 36 | ax-mp 5 |
. . . . . . . . . 10
⊢
(1st ‘𝑈) ∈ CVecOLD |
| 38 | 10 | vafval 30955 |
. . . . . . . . . . 11
⊢ 𝐺 = (1st
‘(1st ‘𝑈)) |
| 39 | 38 | vcablo 30921 |
. . . . . . . . . 10
⊢
((1st ‘𝑈) ∈ CVecOLD → 𝐺 ∈ AbelOp) |
| 40 | 37, 39 | ax-mp 5 |
. . . . . . . . 9
⊢ 𝐺 ∈ AbelOp |
| 41 | 7, 8 | pm3.2i 475 |
. . . . . . . . 9
⊢ (𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) |
| 42 | 7, 29 | pm3.2i 475 |
. . . . . . . . 9
⊢ (𝐴 ∈ 𝑋 ∧ (-1𝑆𝐵) ∈ 𝑋) |
| 43 | 9, 10 | bafval 30956 |
. . . . . . . . . 10
⊢ 𝑋 = ran 𝐺 |
| 44 | 43 | ablo4 30902 |
. . . . . . . . 9
⊢ ((𝐺 ∈ AbelOp ∧ (𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ (𝐴 ∈ 𝑋 ∧ (-1𝑆𝐵) ∈ 𝑋)) → ((𝐴𝐺𝐵)𝐺(𝐴𝐺(-1𝑆𝐵))) = ((𝐴𝐺𝐴)𝐺(𝐵𝐺(-1𝑆𝐵)))) |
| 45 | 40, 41, 42, 44 | mp3an 1490 |
. . . . . . . 8
⊢ ((𝐴𝐺𝐵)𝐺(𝐴𝐺(-1𝑆𝐵))) = ((𝐴𝐺𝐴)𝐺(𝐵𝐺(-1𝑆𝐵))) |
| 46 | 14 | smfval 30957 |
. . . . . . . . . . 11
⊢ 𝑆 = (2nd
‘(1st ‘𝑈)) |
| 47 | 38, 46, 43 | vc2OLD 30920 |
. . . . . . . . . 10
⊢
(((1st ‘𝑈) ∈ CVecOLD ∧ 𝐴 ∈ 𝑋) → (𝐴𝐺𝐴) = (2𝑆𝐴)) |
| 48 | 37, 7, 47 | mp2an 704 |
. . . . . . . . 9
⊢ (𝐴𝐺𝐴) = (2𝑆𝐴) |
| 49 | | eqid 2763 |
. . . . . . . . . . 11
⊢
(0vec‘𝑈) = (0vec‘𝑈) |
| 50 | 9, 10, 14, 49 | nvrinv 31003 |
. . . . . . . . . 10
⊢ ((𝑈 ∈ NrmCVec ∧ 𝐵 ∈ 𝑋) → (𝐵𝐺(-1𝑆𝐵)) = (0vec‘𝑈)) |
| 51 | 4, 8, 50 | mp2an 704 |
. . . . . . . . 9
⊢ (𝐵𝐺(-1𝑆𝐵)) = (0vec‘𝑈) |
| 52 | 48, 51 | oveq12i 7422 |
. . . . . . . 8
⊢ ((𝐴𝐺𝐴)𝐺(𝐵𝐺(-1𝑆𝐵))) = ((2𝑆𝐴)𝐺(0vec‘𝑈)) |
| 53 | 9, 14 | nvscl 30978 |
. . . . . . . . . 10
⊢ ((𝑈 ∈ NrmCVec ∧ 2 ∈
ℂ ∧ 𝐴 ∈
𝑋) → (2𝑆𝐴) ∈ 𝑋) |
| 54 | 4, 5, 7, 53 | mp3an 1490 |
. . . . . . . . 9
⊢ (2𝑆𝐴) ∈ 𝑋 |
| 55 | 9, 10, 49 | nv0rid 30987 |
. . . . . . . . 9
⊢ ((𝑈 ∈ NrmCVec ∧ (2𝑆𝐴) ∈ 𝑋) → ((2𝑆𝐴)𝐺(0vec‘𝑈)) = (2𝑆𝐴)) |
| 56 | 4, 54, 55 | mp2an 704 |
. . . . . . . 8
⊢ ((2𝑆𝐴)𝐺(0vec‘𝑈)) = (2𝑆𝐴) |
| 57 | 45, 52, 56 | 3eqtri 2790 |
. . . . . . 7
⊢ ((𝐴𝐺𝐵)𝐺(𝐴𝐺(-1𝑆𝐵))) = (2𝑆𝐴) |
| 58 | 57 | oveq2i 7421 |
. . . . . 6
⊢ ((1 /
2)𝑆((𝐴𝐺𝐵)𝐺(𝐴𝐺(-1𝑆𝐵)))) = ((1 / 2)𝑆(2𝑆𝐴)) |
| 59 | 6, 5, 7 | 3pm3.2i 1358 |
. . . . . . 7
⊢ ((1 / 2)
∈ ℂ ∧ 2 ∈ ℂ ∧ 𝐴 ∈ 𝑋) |
| 60 | 9, 14 | nvsass 30980 |
. . . . . . 7
⊢ ((𝑈 ∈ NrmCVec ∧ ((1 / 2)
∈ ℂ ∧ 2 ∈ ℂ ∧ 𝐴 ∈ 𝑋)) → (((1 / 2) · 2)𝑆𝐴) = ((1 / 2)𝑆(2𝑆𝐴))) |
| 61 | 4, 59, 60 | mp2an 704 |
. . . . . 6
⊢ (((1 / 2)
· 2)𝑆𝐴) = ((1 / 2)𝑆(2𝑆𝐴)) |
| 62 | 58, 61 | eqtr4i 2789 |
. . . . 5
⊢ ((1 /
2)𝑆((𝐴𝐺𝐵)𝐺(𝐴𝐺(-1𝑆𝐵)))) = (((1 / 2) · 2)𝑆𝐴) |
| 63 | 6, 12, 31 | 3pm3.2i 1358 |
. . . . . 6
⊢ ((1 / 2)
∈ ℂ ∧ (𝐴𝐺𝐵) ∈ 𝑋 ∧ (𝐴𝐺(-1𝑆𝐵)) ∈ 𝑋) |
| 64 | 9, 10, 14 | nvdi 30982 |
. . . . . 6
⊢ ((𝑈 ∈ NrmCVec ∧ ((1 / 2)
∈ ℂ ∧ (𝐴𝐺𝐵) ∈ 𝑋 ∧ (𝐴𝐺(-1𝑆𝐵)) ∈ 𝑋)) → ((1 / 2)𝑆((𝐴𝐺𝐵)𝐺(𝐴𝐺(-1𝑆𝐵)))) = (((1 / 2)𝑆(𝐴𝐺𝐵))𝐺((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵))))) |
| 65 | 4, 63, 64 | mp2an 704 |
. . . . 5
⊢ ((1 /
2)𝑆((𝐴𝐺𝐵)𝐺(𝐴𝐺(-1𝑆𝐵)))) = (((1 / 2)𝑆(𝐴𝐺𝐵))𝐺((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵)))) |
| 66 | | ax-1cn 11153 |
. . . . . . . 8
⊢ 1 ∈
ℂ |
| 67 | | 2ne0 12342 |
. . . . . . . 8
⊢ 2 ≠
0 |
| 68 | 66, 5, 67 | divcan1i 11954 |
. . . . . . 7
⊢ ((1 / 2)
· 2) = 1 |
| 69 | 68 | oveq1i 7420 |
. . . . . 6
⊢ (((1 / 2)
· 2)𝑆𝐴) = (1𝑆𝐴) |
| 70 | 9, 14 | nvsid 30979 |
. . . . . . 7
⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (1𝑆𝐴) = 𝐴) |
| 71 | 4, 7, 70 | mp2an 704 |
. . . . . 6
⊢ (1𝑆𝐴) = 𝐴 |
| 72 | 69, 71 | eqtri 2786 |
. . . . 5
⊢ (((1 / 2)
· 2)𝑆𝐴) = 𝐴 |
| 73 | 62, 65, 72 | 3eqtr3i 2794 |
. . . 4
⊢ (((1 /
2)𝑆(𝐴𝐺𝐵))𝐺((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵)))) = 𝐴 |
| 74 | 73 | oveq1i 7420 |
. . 3
⊢ ((((1 /
2)𝑆(𝐴𝐺𝐵))𝐺((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵))))𝑃𝐶) = (𝐴𝑃𝐶) |
| 75 | 27, 6 | mulcomi 11212 |
. . . . . . . . 9
⊢ (-1
· (1 / 2)) = ((1 / 2) · -1) |
| 76 | 75 | oveq1i 7420 |
. . . . . . . 8
⊢ ((-1
· (1 / 2))𝑆(𝐴𝐺(-1𝑆𝐵))) = (((1 / 2) · -1)𝑆(𝐴𝐺(-1𝑆𝐵))) |
| 77 | 27, 6, 31 | 3pm3.2i 1358 |
. . . . . . . . 9
⊢ (-1
∈ ℂ ∧ (1 / 2) ∈ ℂ ∧ (𝐴𝐺(-1𝑆𝐵)) ∈ 𝑋) |
| 78 | 9, 14 | nvsass 30980 |
. . . . . . . . 9
⊢ ((𝑈 ∈ NrmCVec ∧ (-1 ∈
ℂ ∧ (1 / 2) ∈ ℂ ∧ (𝐴𝐺(-1𝑆𝐵)) ∈ 𝑋)) → ((-1 · (1 / 2))𝑆(𝐴𝐺(-1𝑆𝐵))) = (-1𝑆((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵))))) |
| 79 | 4, 77, 78 | mp2an 704 |
. . . . . . . 8
⊢ ((-1
· (1 / 2))𝑆(𝐴𝐺(-1𝑆𝐵))) = (-1𝑆((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵)))) |
| 80 | 6, 27, 31 | 3pm3.2i 1358 |
. . . . . . . . . 10
⊢ ((1 / 2)
∈ ℂ ∧ -1 ∈ ℂ ∧ (𝐴𝐺(-1𝑆𝐵)) ∈ 𝑋) |
| 81 | 9, 14 | nvsass 30980 |
. . . . . . . . . 10
⊢ ((𝑈 ∈ NrmCVec ∧ ((1 / 2)
∈ ℂ ∧ -1 ∈ ℂ ∧ (𝐴𝐺(-1𝑆𝐵)) ∈ 𝑋)) → (((1 / 2) · -1)𝑆(𝐴𝐺(-1𝑆𝐵))) = ((1 / 2)𝑆(-1𝑆(𝐴𝐺(-1𝑆𝐵))))) |
| 82 | 4, 80, 81 | mp2an 704 |
. . . . . . . . 9
⊢ (((1 / 2)
· -1)𝑆(𝐴𝐺(-1𝑆𝐵))) = ((1 / 2)𝑆(-1𝑆(𝐴𝐺(-1𝑆𝐵)))) |
| 83 | 27, 7, 29 | 3pm3.2i 1358 |
. . . . . . . . . . . 12
⊢ (-1
∈ ℂ ∧ 𝐴
∈ 𝑋 ∧ (-1𝑆𝐵) ∈ 𝑋) |
| 84 | 9, 10, 14 | nvdi 30982 |
. . . . . . . . . . . 12
⊢ ((𝑈 ∈ NrmCVec ∧ (-1 ∈
ℂ ∧ 𝐴 ∈
𝑋 ∧ (-1𝑆𝐵) ∈ 𝑋)) → (-1𝑆(𝐴𝐺(-1𝑆𝐵))) = ((-1𝑆𝐴)𝐺(-1𝑆(-1𝑆𝐵)))) |
| 85 | 4, 83, 84 | mp2an 704 |
. . . . . . . . . . 11
⊢ (-1𝑆(𝐴𝐺(-1𝑆𝐵))) = ((-1𝑆𝐴)𝐺(-1𝑆(-1𝑆𝐵))) |
| 86 | | neg1mulneg1e1 12451 |
. . . . . . . . . . . . . 14
⊢ (-1
· -1) = 1 |
| 87 | 86 | oveq1i 7420 |
. . . . . . . . . . . . 13
⊢ ((-1
· -1)𝑆𝐵) = (1𝑆𝐵) |
| 88 | 27, 27, 8 | 3pm3.2i 1358 |
. . . . . . . . . . . . . 14
⊢ (-1
∈ ℂ ∧ -1 ∈ ℂ ∧ 𝐵 ∈ 𝑋) |
| 89 | 9, 14 | nvsass 30980 |
. . . . . . . . . . . . . 14
⊢ ((𝑈 ∈ NrmCVec ∧ (-1 ∈
ℂ ∧ -1 ∈ ℂ ∧ 𝐵 ∈ 𝑋)) → ((-1 · -1)𝑆𝐵) = (-1𝑆(-1𝑆𝐵))) |
| 90 | 4, 88, 89 | mp2an 704 |
. . . . . . . . . . . . 13
⊢ ((-1
· -1)𝑆𝐵) = (-1𝑆(-1𝑆𝐵)) |
| 91 | 9, 14 | nvsid 30979 |
. . . . . . . . . . . . . 14
⊢ ((𝑈 ∈ NrmCVec ∧ 𝐵 ∈ 𝑋) → (1𝑆𝐵) = 𝐵) |
| 92 | 4, 8, 91 | mp2an 704 |
. . . . . . . . . . . . 13
⊢ (1𝑆𝐵) = 𝐵 |
| 93 | 87, 90, 92 | 3eqtr3i 2794 |
. . . . . . . . . . . 12
⊢ (-1𝑆(-1𝑆𝐵)) = 𝐵 |
| 94 | 93 | oveq2i 7421 |
. . . . . . . . . . 11
⊢ ((-1𝑆𝐴)𝐺(-1𝑆(-1𝑆𝐵))) = ((-1𝑆𝐴)𝐺𝐵) |
| 95 | 85, 94 | eqtri 2786 |
. . . . . . . . . 10
⊢ (-1𝑆(𝐴𝐺(-1𝑆𝐵))) = ((-1𝑆𝐴)𝐺𝐵) |
| 96 | 95 | oveq2i 7421 |
. . . . . . . . 9
⊢ ((1 /
2)𝑆(-1𝑆(𝐴𝐺(-1𝑆𝐵)))) = ((1 / 2)𝑆((-1𝑆𝐴)𝐺𝐵)) |
| 97 | 82, 96 | eqtri 2786 |
. . . . . . . 8
⊢ (((1 / 2)
· -1)𝑆(𝐴𝐺(-1𝑆𝐵))) = ((1 / 2)𝑆((-1𝑆𝐴)𝐺𝐵)) |
| 98 | 76, 79, 97 | 3eqtr3i 2794 |
. . . . . . 7
⊢ (-1𝑆((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵)))) = ((1 / 2)𝑆((-1𝑆𝐴)𝐺𝐵)) |
| 99 | 98 | oveq2i 7421 |
. . . . . 6
⊢ (((1 /
2)𝑆(𝐴𝐺𝐵))𝐺(-1𝑆((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵))))) = (((1 / 2)𝑆(𝐴𝐺𝐵))𝐺((1 / 2)𝑆((-1𝑆𝐴)𝐺𝐵))) |
| 100 | 9, 14 | nvscl 30978 |
. . . . . . . . . 10
⊢ ((𝑈 ∈ NrmCVec ∧ -1 ∈
ℂ ∧ 𝐴 ∈
𝑋) → (-1𝑆𝐴) ∈ 𝑋) |
| 101 | 4, 27, 7, 100 | mp3an 1490 |
. . . . . . . . 9
⊢ (-1𝑆𝐴) ∈ 𝑋 |
| 102 | 9, 10 | nvgcl 30972 |
. . . . . . . . 9
⊢ ((𝑈 ∈ NrmCVec ∧ (-1𝑆𝐴) ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → ((-1𝑆𝐴)𝐺𝐵) ∈ 𝑋) |
| 103 | 4, 101, 8, 102 | mp3an 1490 |
. . . . . . . 8
⊢ ((-1𝑆𝐴)𝐺𝐵) ∈ 𝑋 |
| 104 | 6, 12, 103 | 3pm3.2i 1358 |
. . . . . . 7
⊢ ((1 / 2)
∈ ℂ ∧ (𝐴𝐺𝐵) ∈ 𝑋 ∧ ((-1𝑆𝐴)𝐺𝐵) ∈ 𝑋) |
| 105 | 9, 10, 14 | nvdi 30982 |
. . . . . . 7
⊢ ((𝑈 ∈ NrmCVec ∧ ((1 / 2)
∈ ℂ ∧ (𝐴𝐺𝐵) ∈ 𝑋 ∧ ((-1𝑆𝐴)𝐺𝐵) ∈ 𝑋)) → ((1 / 2)𝑆((𝐴𝐺𝐵)𝐺((-1𝑆𝐴)𝐺𝐵))) = (((1 / 2)𝑆(𝐴𝐺𝐵))𝐺((1 / 2)𝑆((-1𝑆𝐴)𝐺𝐵)))) |
| 106 | 4, 104, 105 | mp2an 704 |
. . . . . 6
⊢ ((1 /
2)𝑆((𝐴𝐺𝐵)𝐺((-1𝑆𝐴)𝐺𝐵))) = (((1 / 2)𝑆(𝐴𝐺𝐵))𝐺((1 / 2)𝑆((-1𝑆𝐴)𝐺𝐵))) |
| 107 | 99, 106 | eqtr4i 2789 |
. . . . 5
⊢ (((1 /
2)𝑆(𝐴𝐺𝐵))𝐺(-1𝑆((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵))))) = ((1 / 2)𝑆((𝐴𝐺𝐵)𝐺((-1𝑆𝐴)𝐺𝐵))) |
| 108 | 101, 8 | pm3.2i 475 |
. . . . . . . . 9
⊢ ((-1𝑆𝐴) ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) |
| 109 | 43 | ablo4 30902 |
. . . . . . . . 9
⊢ ((𝐺 ∈ AbelOp ∧ (𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ ((-1𝑆𝐴) ∈ 𝑋 ∧ 𝐵 ∈ 𝑋)) → ((𝐴𝐺𝐵)𝐺((-1𝑆𝐴)𝐺𝐵)) = ((𝐴𝐺(-1𝑆𝐴))𝐺(𝐵𝐺𝐵))) |
| 110 | 40, 41, 108, 109 | mp3an 1490 |
. . . . . . . 8
⊢ ((𝐴𝐺𝐵)𝐺((-1𝑆𝐴)𝐺𝐵)) = ((𝐴𝐺(-1𝑆𝐴))𝐺(𝐵𝐺𝐵)) |
| 111 | 9, 10, 14, 49 | nvrinv 31003 |
. . . . . . . . . . 11
⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝐴𝐺(-1𝑆𝐴)) = (0vec‘𝑈)) |
| 112 | 4, 7, 111 | mp2an 704 |
. . . . . . . . . 10
⊢ (𝐴𝐺(-1𝑆𝐴)) = (0vec‘𝑈) |
| 113 | 112 | oveq1i 7420 |
. . . . . . . . 9
⊢ ((𝐴𝐺(-1𝑆𝐴))𝐺(𝐵𝐺𝐵)) = ((0vec‘𝑈)𝐺(𝐵𝐺𝐵)) |
| 114 | 9, 10 | nvgcl 30972 |
. . . . . . . . . . 11
⊢ ((𝑈 ∈ NrmCVec ∧ 𝐵 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐵𝐺𝐵) ∈ 𝑋) |
| 115 | 4, 8, 8, 114 | mp3an 1490 |
. . . . . . . . . 10
⊢ (𝐵𝐺𝐵) ∈ 𝑋 |
| 116 | 9, 10, 49 | nv0lid 30988 |
. . . . . . . . . 10
⊢ ((𝑈 ∈ NrmCVec ∧ (𝐵𝐺𝐵) ∈ 𝑋) → ((0vec‘𝑈)𝐺(𝐵𝐺𝐵)) = (𝐵𝐺𝐵)) |
| 117 | 4, 115, 116 | mp2an 704 |
. . . . . . . . 9
⊢
((0vec‘𝑈)𝐺(𝐵𝐺𝐵)) = (𝐵𝐺𝐵) |
| 118 | 113, 117 | eqtri 2786 |
. . . . . . . 8
⊢ ((𝐴𝐺(-1𝑆𝐴))𝐺(𝐵𝐺𝐵)) = (𝐵𝐺𝐵) |
| 119 | 38, 46, 43 | vc2OLD 30920 |
. . . . . . . . 9
⊢
(((1st ‘𝑈) ∈ CVecOLD ∧ 𝐵 ∈ 𝑋) → (𝐵𝐺𝐵) = (2𝑆𝐵)) |
| 120 | 37, 8, 119 | mp2an 704 |
. . . . . . . 8
⊢ (𝐵𝐺𝐵) = (2𝑆𝐵) |
| 121 | 110, 118,
120 | 3eqtri 2790 |
. . . . . . 7
⊢ ((𝐴𝐺𝐵)𝐺((-1𝑆𝐴)𝐺𝐵)) = (2𝑆𝐵) |
| 122 | 121 | oveq2i 7421 |
. . . . . 6
⊢ ((1 /
2)𝑆((𝐴𝐺𝐵)𝐺((-1𝑆𝐴)𝐺𝐵))) = ((1 / 2)𝑆(2𝑆𝐵)) |
| 123 | 6, 5, 8 | 3pm3.2i 1358 |
. . . . . . 7
⊢ ((1 / 2)
∈ ℂ ∧ 2 ∈ ℂ ∧ 𝐵 ∈ 𝑋) |
| 124 | 9, 14 | nvsass 30980 |
. . . . . . 7
⊢ ((𝑈 ∈ NrmCVec ∧ ((1 / 2)
∈ ℂ ∧ 2 ∈ ℂ ∧ 𝐵 ∈ 𝑋)) → (((1 / 2) · 2)𝑆𝐵) = ((1 / 2)𝑆(2𝑆𝐵))) |
| 125 | 4, 123, 124 | mp2an 704 |
. . . . . 6
⊢ (((1 / 2)
· 2)𝑆𝐵) = ((1 / 2)𝑆(2𝑆𝐵)) |
| 126 | 68 | oveq1i 7420 |
. . . . . 6
⊢ (((1 / 2)
· 2)𝑆𝐵) = (1𝑆𝐵) |
| 127 | 122, 125,
126 | 3eqtr2i 2792 |
. . . . 5
⊢ ((1 /
2)𝑆((𝐴𝐺𝐵)𝐺((-1𝑆𝐴)𝐺𝐵))) = (1𝑆𝐵) |
| 128 | 107, 127,
92 | 3eqtri 2790 |
. . . 4
⊢ (((1 /
2)𝑆(𝐴𝐺𝐵))𝐺(-1𝑆((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵))))) = 𝐵 |
| 129 | 128 | oveq1i 7420 |
. . 3
⊢ ((((1 /
2)𝑆(𝐴𝐺𝐵))𝐺(-1𝑆((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵)))))𝑃𝐶) = (𝐵𝑃𝐶) |
| 130 | 74, 129 | oveq12i 7422 |
. 2
⊢ (((((1 /
2)𝑆(𝐴𝐺𝐵))𝐺((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵))))𝑃𝐶) + ((((1 / 2)𝑆(𝐴𝐺𝐵))𝐺(-1𝑆((1 / 2)𝑆(𝐴𝐺(-1𝑆𝐵)))))𝑃𝐶)) = ((𝐴𝑃𝐶) + (𝐵𝑃𝐶)) |
| 131 | 26, 34, 130 | 3eqtr2i 2792 |
1
⊢ ((𝐴𝐺𝐵)𝑃𝐶) = ((𝐴𝑃𝐶) + (𝐵𝑃𝐶)) |