| Step | Hyp | Ref
| Expression |
| 1 | | nnuz 13005 |
. . 3
⊢ ℕ =
(ℤ≥‘1) |
| 2 | | 1zzd 12728 |
. . 3
⊢ (𝐴 ∈ 𝑆 → 1 ∈ ℤ) |
| 3 | | neg1cn 12306 |
. . . 4
⊢ -1
∈ ℂ |
| 4 | 3 | a1i 11 |
. . 3
⊢ (𝐴 ∈ 𝑆 → -1 ∈ ℂ) |
| 5 | | ax-1cn 11259 |
. . . . . 6
⊢ 1 ∈
ℂ |
| 6 | | logtayl2.s |
. . . . . . . . 9
⊢ 𝑆 = (1(ball‘(abs ∘
− ))1) |
| 7 | 6 | eleq2i 2852 |
. . . . . . . 8
⊢ (𝐴 ∈ 𝑆 ↔ 𝐴 ∈ (1(ball‘(abs ∘ −
))1)) |
| 8 | | cnxmet 25092 |
. . . . . . . . 9
⊢ (abs
∘ − ) ∈ (∞Met‘ℂ) |
| 9 | | 1xr 11369 |
. . . . . . . . 9
⊢ 1 ∈
ℝ* |
| 10 | | elbl 24708 |
. . . . . . . . 9
⊢ (((abs
∘ − ) ∈ (∞Met‘ℂ) ∧ 1 ∈ ℂ
∧ 1 ∈ ℝ*) → (𝐴 ∈ (1(ball‘(abs ∘ −
))1) ↔ (𝐴 ∈
ℂ ∧ (1(abs ∘ − )𝐴) < 1))) |
| 11 | 8, 5, 9, 10 | mp3an 1490 |
. . . . . . . 8
⊢ (𝐴 ∈ (1(ball‘(abs
∘ − ))1) ↔ (𝐴 ∈ ℂ ∧ (1(abs ∘ −
)𝐴) <
1)) |
| 12 | 7, 11 | bitri 278 |
. . . . . . 7
⊢ (𝐴 ∈ 𝑆 ↔ (𝐴 ∈ ℂ ∧ (1(abs ∘ −
)𝐴) <
1)) |
| 13 | 12 | simplbi 502 |
. . . . . 6
⊢ (𝐴 ∈ 𝑆 → 𝐴 ∈ ℂ) |
| 14 | | subcl 11557 |
. . . . . 6
⊢ ((1
∈ ℂ ∧ 𝐴
∈ ℂ) → (1 − 𝐴) ∈ ℂ) |
| 15 | 5, 13, 14 | sylancr 599 |
. . . . 5
⊢ (𝐴 ∈ 𝑆 → (1 − 𝐴) ∈ ℂ) |
| 16 | | eqid 2760 |
. . . . . . . 8
⊢ (abs
∘ − ) = (abs ∘ − ) |
| 17 | 16 | cnmetdval 25090 |
. . . . . . 7
⊢ ((1
∈ ℂ ∧ 𝐴
∈ ℂ) → (1(abs ∘ − )𝐴) = (abs‘(1 − 𝐴))) |
| 18 | 5, 13, 17 | sylancr 599 |
. . . . . 6
⊢ (𝐴 ∈ 𝑆 → (1(abs ∘ − )𝐴) = (abs‘(1 − 𝐴))) |
| 19 | 12 | simprbi 503 |
. . . . . 6
⊢ (𝐴 ∈ 𝑆 → (1(abs ∘ − )𝐴) < 1) |
| 20 | 18, 19 | eqbrtrrd 5128 |
. . . . 5
⊢ (𝐴 ∈ 𝑆 → (abs‘(1 − 𝐴)) < 1) |
| 21 | | logtayl 26989 |
. . . . 5
⊢ (((1
− 𝐴) ∈ ℂ
∧ (abs‘(1 − 𝐴)) < 1) → seq1( + , (𝑘 ∈ ℕ ↦ (((1
− 𝐴)↑𝑘) / 𝑘))) ⇝ -(log‘(1 − (1 −
𝐴)))) |
| 22 | 15, 20, 21 | syl2anc 596 |
. . . 4
⊢ (𝐴 ∈ 𝑆 → seq1( + , (𝑘 ∈ ℕ ↦ (((1 − 𝐴)↑𝑘) / 𝑘))) ⇝ -(log‘(1 − (1 −
𝐴)))) |
| 23 | | nncan 11588 |
. . . . . . 7
⊢ ((1
∈ ℂ ∧ 𝐴
∈ ℂ) → (1 − (1 − 𝐴)) = 𝐴) |
| 24 | 5, 13, 23 | sylancr 599 |
. . . . . 6
⊢ (𝐴 ∈ 𝑆 → (1 − (1 − 𝐴)) = 𝐴) |
| 25 | 24 | fveq2d 6889 |
. . . . 5
⊢ (𝐴 ∈ 𝑆 → (log‘(1 − (1 −
𝐴))) = (log‘𝐴)) |
| 26 | 25 | negeqd 11552 |
. . . 4
⊢ (𝐴 ∈ 𝑆 → -(log‘(1 − (1 −
𝐴))) = -(log‘𝐴)) |
| 27 | 22, 26 | breqtrd 5130 |
. . 3
⊢ (𝐴 ∈ 𝑆 → seq1( + , (𝑘 ∈ ℕ ↦ (((1 − 𝐴)↑𝑘) / 𝑘))) ⇝ -(log‘𝐴)) |
| 28 | | oveq2 7428 |
. . . . . . 7
⊢ (𝑘 = 𝑛 → ((1 − 𝐴)↑𝑘) = ((1 − 𝐴)↑𝑛)) |
| 29 | | id 23 |
. . . . . . 7
⊢ (𝑘 = 𝑛 → 𝑘 = 𝑛) |
| 30 | 28, 29 | oveq12d 7438 |
. . . . . 6
⊢ (𝑘 = 𝑛 → (((1 − 𝐴)↑𝑘) / 𝑘) = (((1 − 𝐴)↑𝑛) / 𝑛)) |
| 31 | | eqid 2760 |
. . . . . 6
⊢ (𝑘 ∈ ℕ ↦ (((1
− 𝐴)↑𝑘) / 𝑘)) = (𝑘 ∈ ℕ ↦ (((1 − 𝐴)↑𝑘) / 𝑘)) |
| 32 | | ovex 7453 |
. . . . . 6
⊢ (((1
− 𝐴)↑𝑛) / 𝑛) ∈ V |
| 33 | 30, 31, 32 | fvmpt 6993 |
. . . . 5
⊢ (𝑛 ∈ ℕ → ((𝑘 ∈ ℕ ↦ (((1
− 𝐴)↑𝑘) / 𝑘))‘𝑛) = (((1 − 𝐴)↑𝑛) / 𝑛)) |
| 34 | 33 | adantl 487 |
. . . 4
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((𝑘 ∈ ℕ ↦ (((1 − 𝐴)↑𝑘) / 𝑘))‘𝑛) = (((1 − 𝐴)↑𝑛) / 𝑛)) |
| 35 | | nnnn0 12614 |
. . . . . 6
⊢ (𝑛 ∈ ℕ → 𝑛 ∈
ℕ0) |
| 36 | | expcl 14223 |
. . . . . 6
⊢ (((1
− 𝐴) ∈ ℂ
∧ 𝑛 ∈
ℕ0) → ((1 − 𝐴)↑𝑛) ∈ ℂ) |
| 37 | 15, 35, 36 | syl2an 608 |
. . . . 5
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((1 − 𝐴)↑𝑛) ∈ ℂ) |
| 38 | | nncn 12344 |
. . . . . 6
⊢ (𝑛 ∈ ℕ → 𝑛 ∈
ℂ) |
| 39 | 38 | adantl 487 |
. . . . 5
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℂ) |
| 40 | | nnne0 12373 |
. . . . . 6
⊢ (𝑛 ∈ ℕ → 𝑛 ≠ 0) |
| 41 | 40 | adantl 487 |
. . . . 5
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → 𝑛 ≠ 0) |
| 42 | 37, 39, 41 | divcld 12094 |
. . . 4
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → (((1 − 𝐴)↑𝑛) / 𝑛) ∈ ℂ) |
| 43 | 34, 42 | eqeltrd 2860 |
. . 3
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((𝑘 ∈ ℕ ↦ (((1 − 𝐴)↑𝑘) / 𝑘))‘𝑛) ∈ ℂ) |
| 44 | 37, 39, 41 | divnegd 12107 |
. . . . . 6
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → -(((1 − 𝐴)↑𝑛) / 𝑛) = ( -((1 − 𝐴)↑𝑛) / 𝑛)) |
| 45 | 42 | mulm1d 11769 |
. . . . . 6
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ( -1 · (((1
− 𝐴)↑𝑛) / 𝑛)) = -(((1 − 𝐴)↑𝑛) / 𝑛)) |
| 46 | 35 | adantl 487 |
. . . . . . . . . 10
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℕ0) |
| 47 | | expcl 14223 |
. . . . . . . . . 10
⊢ (( -1
∈ ℂ ∧ 𝑛
∈ ℕ0) → ( -1↑𝑛) ∈ ℂ) |
| 48 | 3, 46, 47 | sylancr 599 |
. . . . . . . . 9
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ( -1↑𝑛) ∈
ℂ) |
| 49 | | subcl 11557 |
. . . . . . . . . . 11
⊢ ((𝐴 ∈ ℂ ∧ 1 ∈
ℂ) → (𝐴 −
1) ∈ ℂ) |
| 50 | 13, 5, 49 | sylancl 598 |
. . . . . . . . . 10
⊢ (𝐴 ∈ 𝑆 → (𝐴 − 1) ∈ ℂ) |
| 51 | | expcl 14223 |
. . . . . . . . . 10
⊢ (((𝐴 − 1) ∈ ℂ ∧
𝑛 ∈
ℕ0) → ((𝐴 − 1)↑𝑛) ∈ ℂ) |
| 52 | 50, 35, 51 | syl2an 608 |
. . . . . . . . 9
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((𝐴 − 1)↑𝑛) ∈ ℂ) |
| 53 | 48, 52 | mulneg1d 11770 |
. . . . . . . 8
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ( -( -1↑𝑛) · ((𝐴 − 1)↑𝑛)) = -(( -1↑𝑛) · ((𝐴 − 1)↑𝑛))) |
| 54 | 3 | a1i 11 |
. . . . . . . . . . 11
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → -1 ∈
ℂ) |
| 55 | | neg1ne0 12308 |
. . . . . . . . . . . 12
⊢ -1 ≠
0 |
| 56 | 55 | a1i 11 |
. . . . . . . . . . 11
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → -1 ≠
0) |
| 57 | | nnz 12715 |
. . . . . . . . . . . 12
⊢ (𝑛 ∈ ℕ → 𝑛 ∈
ℤ) |
| 58 | 57 | adantl 487 |
. . . . . . . . . . 11
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℤ) |
| 59 | 54, 56, 58 | expm1d 14300 |
. . . . . . . . . 10
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ( -1↑(𝑛 − 1)) = (( -1↑𝑛) / -1)) |
| 60 | 5 | a1i 11 |
. . . . . . . . . . 11
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → 1 ∈
ℂ) |
| 61 | | ax-1ne0 11270 |
. . . . . . . . . . . 12
⊢ 1 ≠
0 |
| 62 | 61 | a1i 11 |
. . . . . . . . . . 11
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → 1 ≠
0) |
| 63 | 48, 60, 62 | divneg2d 12108 |
. . . . . . . . . 10
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → -(( -1↑𝑛) / 1) = (( -1↑𝑛) / -1)) |
| 64 | 48 | div1d 12086 |
. . . . . . . . . . 11
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → (( -1↑𝑛) / 1) = ( -1↑𝑛)) |
| 65 | 64 | negeqd 11552 |
. . . . . . . . . 10
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → -(( -1↑𝑛) / 1) = -( -1↑𝑛)) |
| 66 | 59, 63, 65 | 3eqtr2d 2801 |
. . . . . . . . 9
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ( -1↑(𝑛 − 1)) = -( -1↑𝑛)) |
| 67 | 66 | oveq1d 7435 |
. . . . . . . 8
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → (( -1↑(𝑛 − 1)) · ((𝐴 − 1)↑𝑛)) = ( -( -1↑𝑛) · ((𝐴 − 1)↑𝑛))) |
| 68 | 50 | mulm1d 11769 |
. . . . . . . . . . . . 13
⊢ (𝐴 ∈ 𝑆 → ( -1 · (𝐴 − 1)) = -(𝐴 − 1)) |
| 69 | | negsubdi2 11618 |
. . . . . . . . . . . . . 14
⊢ ((𝐴 ∈ ℂ ∧ 1 ∈
ℂ) → -(𝐴 −
1) = (1 − 𝐴)) |
| 70 | 13, 5, 69 | sylancl 598 |
. . . . . . . . . . . . 13
⊢ (𝐴 ∈ 𝑆 → -(𝐴 − 1) = (1 − 𝐴)) |
| 71 | 68, 70 | eqtr2d 2796 |
. . . . . . . . . . . 12
⊢ (𝐴 ∈ 𝑆 → (1 − 𝐴) = ( -1 · (𝐴 − 1))) |
| 72 | 71 | oveq1d 7435 |
. . . . . . . . . . 11
⊢ (𝐴 ∈ 𝑆 → ((1 − 𝐴)↑𝑛) = (( -1 · (𝐴 − 1))↑𝑛)) |
| 73 | 72 | adantr 486 |
. . . . . . . . . 10
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((1 − 𝐴)↑𝑛) = (( -1 · (𝐴 − 1))↑𝑛)) |
| 74 | | mulexp 14245 |
. . . . . . . . . . 11
⊢ (( -1
∈ ℂ ∧ (𝐴
− 1) ∈ ℂ ∧ 𝑛 ∈ ℕ0) → (( -1
· (𝐴 −
1))↑𝑛) = ((
-1↑𝑛) · ((𝐴 − 1)↑𝑛))) |
| 75 | 3, 50, 35, 74 | mp3an3an 1496 |
. . . . . . . . . 10
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → (( -1 · (𝐴 − 1))↑𝑛) = (( -1↑𝑛) · ((𝐴 − 1)↑𝑛))) |
| 76 | 73, 75 | eqtrd 2795 |
. . . . . . . . 9
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((1 − 𝐴)↑𝑛) = (( -1↑𝑛) · ((𝐴 − 1)↑𝑛))) |
| 77 | 76 | negeqd 11552 |
. . . . . . . 8
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → -((1 − 𝐴)↑𝑛) = -(( -1↑𝑛) · ((𝐴 − 1)↑𝑛))) |
| 78 | 53, 67, 77 | 3eqtr4d 2805 |
. . . . . . 7
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → (( -1↑(𝑛 − 1)) · ((𝐴 − 1)↑𝑛)) = -((1 − 𝐴)↑𝑛)) |
| 79 | 78 | oveq1d 7435 |
. . . . . 6
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((( -1↑(𝑛 − 1)) · ((𝐴 − 1)↑𝑛)) / 𝑛) = ( -((1 − 𝐴)↑𝑛) / 𝑛)) |
| 80 | 44, 45, 79 | 3eqtr4d 2805 |
. . . . 5
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ( -1 · (((1
− 𝐴)↑𝑛) / 𝑛)) = ((( -1↑(𝑛 − 1)) · ((𝐴 − 1)↑𝑛)) / 𝑛)) |
| 81 | | nnm1nn0 12648 |
. . . . . . . 8
⊢ (𝑛 ∈ ℕ → (𝑛 − 1) ∈
ℕ0) |
| 82 | 81 | adantl 487 |
. . . . . . 7
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → (𝑛 − 1) ∈
ℕ0) |
| 83 | | expcl 14223 |
. . . . . . 7
⊢ (( -1
∈ ℂ ∧ (𝑛
− 1) ∈ ℕ0) → ( -1↑(𝑛 − 1)) ∈ ℂ) |
| 84 | 3, 82, 83 | sylancr 599 |
. . . . . 6
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ( -1↑(𝑛 − 1)) ∈
ℂ) |
| 85 | 84, 52, 39, 41 | div23d 12131 |
. . . . 5
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((( -1↑(𝑛 − 1)) · ((𝐴 − 1)↑𝑛)) / 𝑛) = ((( -1↑(𝑛 − 1)) / 𝑛) · ((𝐴 − 1)↑𝑛))) |
| 86 | 80, 85 | eqtr2d 2796 |
. . . 4
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((( -1↑(𝑛 − 1)) / 𝑛) · ((𝐴 − 1)↑𝑛)) = ( -1 · (((1 − 𝐴)↑𝑛) / 𝑛))) |
| 87 | | oveq1 7427 |
. . . . . . . . 9
⊢ (𝑘 = 𝑛 → (𝑘 − 1) = (𝑛 − 1)) |
| 88 | 87 | oveq2d 7436 |
. . . . . . . 8
⊢ (𝑘 = 𝑛 → ( -1↑(𝑘 − 1)) = ( -1↑(𝑛 − 1))) |
| 89 | 88, 29 | oveq12d 7438 |
. . . . . . 7
⊢ (𝑘 = 𝑛 → (( -1↑(𝑘 − 1)) / 𝑘) = (( -1↑(𝑛 − 1)) / 𝑛)) |
| 90 | | oveq2 7428 |
. . . . . . 7
⊢ (𝑘 = 𝑛 → ((𝐴 − 1)↑𝑘) = ((𝐴 − 1)↑𝑛)) |
| 91 | 89, 90 | oveq12d 7438 |
. . . . . 6
⊢ (𝑘 = 𝑛 → ((( -1↑(𝑘 − 1)) / 𝑘) · ((𝐴 − 1)↑𝑘)) = ((( -1↑(𝑛 − 1)) / 𝑛) · ((𝐴 − 1)↑𝑛))) |
| 92 | | eqid 2760 |
. . . . . 6
⊢ (𝑘 ∈ ℕ ↦ (((
-1↑(𝑘 − 1)) /
𝑘) · ((𝐴 − 1)↑𝑘))) = (𝑘 ∈ ℕ ↦ ((( -1↑(𝑘 − 1)) / 𝑘) · ((𝐴 − 1)↑𝑘))) |
| 93 | | ovex 7453 |
. . . . . 6
⊢ (((
-1↑(𝑛 − 1)) /
𝑛) · ((𝐴 − 1)↑𝑛)) ∈ V |
| 94 | 91, 92, 93 | fvmpt 6993 |
. . . . 5
⊢ (𝑛 ∈ ℕ → ((𝑘 ∈ ℕ ↦ (((
-1↑(𝑘 − 1)) /
𝑘) · ((𝐴 − 1)↑𝑘)))‘𝑛) = ((( -1↑(𝑛 − 1)) / 𝑛) · ((𝐴 − 1)↑𝑛))) |
| 95 | 94 | adantl 487 |
. . . 4
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((𝑘 ∈ ℕ ↦ ((( -1↑(𝑘 − 1)) / 𝑘) · ((𝐴 − 1)↑𝑘)))‘𝑛) = ((( -1↑(𝑛 − 1)) / 𝑛) · ((𝐴 − 1)↑𝑛))) |
| 96 | 34 | oveq2d 7436 |
. . . 4
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ( -1 · ((𝑘 ∈ ℕ ↦ (((1
− 𝐴)↑𝑘) / 𝑘))‘𝑛)) = ( -1 · (((1 − 𝐴)↑𝑛) / 𝑛))) |
| 97 | 86, 95, 96 | 3eqtr4d 2805 |
. . 3
⊢ ((𝐴 ∈ 𝑆 ∧ 𝑛 ∈ ℕ) → ((𝑘 ∈ ℕ ↦ ((( -1↑(𝑘 − 1)) / 𝑘) · ((𝐴 − 1)↑𝑘)))‘𝑛) = ( -1 · ((𝑘 ∈ ℕ ↦ (((1 − 𝐴)↑𝑘) / 𝑘))‘𝑛))) |
| 98 | 1, 2, 4, 27, 43, 97 | isermulc2 15826 |
. 2
⊢ (𝐴 ∈ 𝑆 → seq1( + , (𝑘 ∈ ℕ ↦ ((( -1↑(𝑘 − 1)) / 𝑘) · ((𝐴 − 1)↑𝑘)))) ⇝ ( -1 · -(log‘𝐴))) |
| 99 | 6 | dvlog2lem 26981 |
. . . . . . . 8
⊢ 𝑆 ⊆ (ℂ ∖
(-∞(,]0)) |
| 100 | 99 | sseli 3904 |
. . . . . . 7
⊢ (𝐴 ∈ 𝑆 → 𝐴 ∈ (ℂ ∖
(-∞(,]0))) |
| 101 | | eqid 2760 |
. . . . . . . 8
⊢ (ℂ
∖ (-∞(,]0)) = (ℂ ∖ (-∞(,]0)) |
| 102 | 101 | logdmn0 26969 |
. . . . . . 7
⊢ (𝐴 ∈ (ℂ ∖
(-∞(,]0)) → 𝐴
≠ 0) |
| 103 | 100, 102 | syl 18 |
. . . . . 6
⊢ (𝐴 ∈ 𝑆 → 𝐴 ≠ 0) |
| 104 | 13, 103 | logcld 26899 |
. . . . 5
⊢ (𝐴 ∈ 𝑆 → (log‘𝐴) ∈ ℂ) |
| 105 | 104 | negcld 11657 |
. . . 4
⊢ (𝐴 ∈ 𝑆 → -(log‘𝐴) ∈ ℂ) |
| 106 | 105 | mulm1d 11769 |
. . 3
⊢ (𝐴 ∈ 𝑆 → ( -1 · -(log‘𝐴)) = - -(log‘𝐴)) |
| 107 | 104 | negnegd 11661 |
. . 3
⊢ (𝐴 ∈ 𝑆 → - -(log‘𝐴) = (log‘𝐴)) |
| 108 | 106, 107 | eqtrd 2795 |
. 2
⊢ (𝐴 ∈ 𝑆 → ( -1 · -(log‘𝐴)) = (log‘𝐴)) |
| 109 | 98, 108 | breqtrd 5130 |
1
⊢ (𝐴 ∈ 𝑆 → seq1( + , (𝑘 ∈ ℕ ↦ ((( -1↑(𝑘 − 1)) / 𝑘) · ((𝐴 − 1)↑𝑘)))) ⇝ (log‘𝐴)) |