Proof of Theorem normlem7t
| Step | Hyp | Ref
| Expression |
| 1 | | fveq2 2832 |
. . . . 5
⊢ (S =
if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) → (∗ ‘S) = (∗ ‘if((S ∈ ℂ ∧ (abs ‘S) = 1), S,
1))) |
| 2 | 1 | opreq1d 3012 |
. . . 4
⊢ (S =
if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) → ((∗ ‘S) · (A
·i B)) =
((∗ ‘if((S ∈ ℂ
∧ (abs ‘S) = 1), S, 1)) · (A ·i B))) |
| 3 | | opreq1 3006 |
. . . 4
⊢ (S =
if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) → (S
· (B
·i A)) =
(if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) · (B ·i A))) |
| 4 | 2, 3 | opreq12d 3014 |
. . 3
⊢ (S =
if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) → (((∗ ‘S) · (A
·i B)) +
(S · (B ·i A))) = (((∗ ‘if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1))
· (A
·i B)) +
(if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) · (B ·i A)))) |
| 5 | 4 | breq1d 2071 |
. 2
⊢ (S =
if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) → ((((∗ ‘S) · (A
·i B)) +
(S · (B ·i A))) ≤ (2 · ((√ ‘(B ·i B)) · (√ ‘(A ·i A)))) ↔ (((∗ ‘if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1))
· (A
·i B)) +
(if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) · (B ·i A))) ≤ (2 · ((√ ‘(B ·i B)) · (√ ‘(A ·i A)))))) |
| 6 | | eleq1 1149 |
. . . . . 6
⊢ (S =
if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) → (S
∈ ℂ ↔ if((S ∈ ℂ
∧ (abs ‘S) = 1), S, 1) ∈ ℂ)) |
| 7 | | fveq2 2832 |
. . . . . . 7
⊢ (S =
if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) → (abs ‘S) = (abs ‘if((S ∈ ℂ ∧ (abs ‘S) = 1), S,
1))) |
| 8 | 7 | cleq1d 1109 |
. . . . . 6
⊢ (S =
if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) → ((abs ‘S) = 1 ↔ (abs ‘if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1))
= 1)) |
| 9 | 6, 8 | anbi12d 476 |
. . . . 5
⊢ (S =
if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) → ((S
∈ ℂ ∧ (abs ‘S) = 1)
↔ (if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) ∈ ℂ ∧ (abs ‘if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1))
= 1))) |
| 10 | | eleq1 1149 |
. . . . . 6
⊢ (1 = if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1)
→ (1 ∈ ℂ ↔ if((S
∈ ℂ ∧ (abs ‘S) = 1),
S, 1) ∈ ℂ)) |
| 11 | | fveq2 2832 |
. . . . . . 7
⊢ (1 = if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1)
→ (abs ‘1) = (abs ‘if((S
∈ ℂ ∧ (abs ‘S) = 1),
S, 1))) |
| 12 | 11 | cleq1d 1109 |
. . . . . 6
⊢ (1 = if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1)
→ ((abs ‘1) = 1 ↔ (abs ‘if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1))
= 1)) |
| 13 | 10, 12 | anbi12d 476 |
. . . . 5
⊢ (1 = if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1)
→ ((1 ∈ ℂ ∧ (abs ‘1) = 1) ↔ (if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1)
∈ ℂ ∧ (abs ‘if((S
∈ ℂ ∧ (abs ‘S) = 1),
S, 1)) = 1))) |
| 14 | | 1cn 4101 |
. . . . . 6
⊢ 1 ∈ ℂ |
| 15 | | ax0re 4063 |
. . . . . . . 8
⊢ 0 ∈ ℝ |
| 16 | | ax1re 4064 |
. . . . . . . 8
⊢ 1 ∈ ℝ |
| 17 | | lt01 4377 |
. . . . . . . 8
⊢ 0 < 1 |
| 18 | 15, 16, 17 | ltlei 4303 |
. . . . . . 7
⊢ 0 ≤ 1 |
| 19 | 16 | absid 4850 |
. . . . . . 7
⊢ (0 ≤ 1 → (abs ‘1) =
1) |
| 20 | 18, 19 | ax-mp 6 |
. . . . . 6
⊢ (abs ‘1) = 1 |
| 21 | 14, 20 | pm3.2i 234 |
. . . . 5
⊢ (1 ∈ ℂ ∧ (abs ‘1) =
1) |
| 22 | 9, 13, 21 | elimhyp 1790 |
. . . 4
⊢ (if((S
∈ ℂ ∧ (abs ‘S) = 1),
S, 1) ∈ ℂ ∧ (abs
‘if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1)) = 1) |
| 23 | 22 | pm3.26i 257 |
. . 3
⊢ if((S
∈ ℂ ∧ (abs ‘S) = 1),
S, 1) ∈ ℂ |
| 24 | | normlem8.1 |
. . 3
⊢ A
∈ ℋ |
| 25 | | normlem8.2 |
. . 3
⊢ B
∈ ℋ |
| 26 | 22 | pm3.27i 261 |
. . 3
⊢ (abs ‘if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1))
= 1 |
| 27 | 23, 24, 25, 26 | normlem7 5069 |
. 2
⊢ (((∗ ‘if((S ∈ ℂ ∧ (abs ‘S) = 1), S, 1))
· (A
·i B)) +
(if((S ∈ ℂ ∧ (abs
‘S) = 1), S, 1) · (B ·i A))) ≤ (2 · ((√ ‘(B ·i B)) · (√ ‘(A ·i A)))) |
| 28 | 5, 27 | dedth 1784 |
1
⊢ ((S
∈ ℂ ∧ (abs ‘S) = 1)
→ (((∗ ‘S) ·
(A ·i
B)) + (S · (B
·i A)))
≤ (2 · ((√ ‘(B
·i B))
· (√ ‘(A
·i A))))) |