Proof of Theorem expaddt
| Step | Hyp | Ref
| Expression |
| 1 | | opreq2 3007 |
. . . . . . . 8
⊢ (x = 1
→ (B + x) = (B +
1)) |
| 2 | 1 | opreq2d 3013 |
. . . . . . 7
⊢ (x = 1
→ (A↑(B + x)) =
(A↑(B + 1))) |
| 3 | | opreq2 3007 |
. . . . . . . 8
⊢ (x = 1
→ (A↑x) = (A↑1)) |
| 4 | 3 | opreq2d 3013 |
. . . . . . 7
⊢ (x = 1
→ ((A↑B) · (A↑x)) =
((A↑B) · (A↑1))) |
| 5 | 2, 4 | cleq12d 1115 |
. . . . . 6
⊢ (x = 1
→ ((A↑(B + x)) =
((A↑B) · (A↑x))
↔ (A↑(B + 1)) = ((A↑B)
· (A↑1)))) |
| 6 | 5 | imbi2d 464 |
. . . . 5
⊢ (x = 1
→ (((A ∈ ℂ ∧ B ∈ ℕ) → (A↑(B +
x)) = ((A↑B)
· (A↑x))) ↔ ((A
∈ ℂ ∧ B ∈ ℕ)
→ (A↑(B + 1)) = ((A↑B)
· (A↑1))))) |
| 7 | | opreq2 3007 |
. . . . . . . 8
⊢ (x =
y → (B + x) =
(B + y)) |
| 8 | 7 | opreq2d 3013 |
. . . . . . 7
⊢ (x =
y → (A↑(B +
x)) = (A↑(B +
y))) |
| 9 | | opreq2 3007 |
. . . . . . . 8
⊢ (x =
y → (A↑x) =
(A↑y)) |
| 10 | 9 | opreq2d 3013 |
. . . . . . 7
⊢ (x =
y → ((A↑B)
· (A↑x)) = ((A↑B)
· (A↑y))) |
| 11 | 8, 10 | cleq12d 1115 |
. . . . . 6
⊢ (x =
y → ((A↑(B +
x)) = ((A↑B)
· (A↑x)) ↔ (A↑(B +
y)) = ((A↑B)
· (A↑y)))) |
| 12 | 11 | imbi2d 464 |
. . . . 5
⊢ (x =
y → (((A ∈ ℂ ∧ B ∈ ℕ) → (A↑(B +
x)) = ((A↑B)
· (A↑x))) ↔ ((A
∈ ℂ ∧ B ∈ ℕ)
→ (A↑(B + y)) =
((A↑B) · (A↑y))))) |
| 13 | | opreq2 3007 |
. . . . . . . 8
⊢ (x =
(y + 1) → (B + x) =
(B + (y
+ 1))) |
| 14 | 13 | opreq2d 3013 |
. . . . . . 7
⊢ (x =
(y + 1) → (A↑(B +
x)) = (A↑(B +
(y + 1)))) |
| 15 | | opreq2 3007 |
. . . . . . . 8
⊢ (x =
(y + 1) → (A↑x) =
(A↑(y + 1))) |
| 16 | 15 | opreq2d 3013 |
. . . . . . 7
⊢ (x =
(y + 1) → ((A↑B)
· (A↑x)) = ((A↑B)
· (A↑(y + 1)))) |
| 17 | 14, 16 | cleq12d 1115 |
. . . . . 6
⊢ (x =
(y + 1) → ((A↑(B +
x)) = ((A↑B)
· (A↑x)) ↔ (A↑(B +
(y + 1))) = ((A↑B)
· (A↑(y + 1))))) |
| 18 | 17 | imbi2d 464 |
. . . . 5
⊢ (x =
(y + 1) → (((A ∈ ℂ ∧ B ∈ ℕ) → (A↑(B +
x)) = ((A↑B)
· (A↑x))) ↔ ((A
∈ ℂ ∧ B ∈ ℕ)
→ (A↑(B + (y + 1))) =
((A↑B) · (A↑(y +
1)))))) |
| 19 | | opreq2 3007 |
. . . . . . . 8
⊢ (x =
C → (B + x) =
(B + C)) |
| 20 | 19 | opreq2d 3013 |
. . . . . . 7
⊢ (x =
C → (A↑(B +
x)) = (A↑(B +
C))) |
| 21 | | opreq2 3007 |
. . . . . . . 8
⊢ (x =
C → (A↑x) =
(A↑C)) |
| 22 | 21 | opreq2d 3013 |
. . . . . . 7
⊢ (x =
C → ((A↑B)
· (A↑x)) = ((A↑B)
· (A↑C))) |
| 23 | 20, 22 | cleq12d 1115 |
. . . . . 6
⊢ (x =
C → ((A↑(B +
x)) = ((A↑B)
· (A↑x)) ↔ (A↑(B +
C)) = ((A↑B)
· (A↑C)))) |
| 24 | 23 | imbi2d 464 |
. . . . 5
⊢ (x =
C → (((A ∈ ℂ ∧ B ∈ ℕ) → (A↑(B +
x)) = ((A↑B)
· (A↑x))) ↔ ((A
∈ ℂ ∧ B ∈ ℕ)
→ (A↑(B + C)) =
((A↑B) · (A↑C))))) |
| 25 | | expp1t 4678 |
. . . . . 6
⊢ ((A
∈ ℂ ∧ B ∈ ℕ)
→ (A↑(B + 1)) = ((A↑B)
· A)) |
| 26 | | exp1t 4679 |
. . . . . . . 8
⊢ (A
∈ ℂ → (A↑1) = A) |
| 27 | 26 | adantr 306 |
. . . . . . 7
⊢ ((A
∈ ℂ ∧ B ∈ ℕ)
→ (A↑1) = A) |
| 28 | 27 | opreq2d 3013 |
. . . . . 6
⊢ ((A
∈ ℂ ∧ B ∈ ℕ)
→ ((A↑B) · (A↑1)) = ((A↑B)
· A)) |
| 29 | 25, 28 | eqtr4d 1131 |
. . . . 5
⊢ ((A
∈ ℂ ∧ B ∈ ℕ)
→ (A↑(B + 1)) = ((A↑B)
· (A↑1))) |
| 30 | | 1cn 4101 |
. . . . . . . . . . . . . . 15
⊢ 1 ∈ ℂ |
| 31 | | axaddass 4072 |
. . . . . . . . . . . . . . 15
⊢ ((B
∈ ℂ ∧ y ∈ ℂ ∧
1 ∈ ℂ) → ((B + y) + 1) = (B +
(y + 1))) |
| 32 | 30, 31 | mp3an3 641 |
. . . . . . . . . . . . . 14
⊢ ((B
∈ ℂ ∧ y ∈ ℂ)
→ ((B + y) + 1) = (B +
(y + 1))) |
| 33 | | nncnt 4428 |
. . . . . . . . . . . . . 14
⊢ (B
∈ ℕ → B ∈
ℂ) |
| 34 | | nncnt 4428 |
. . . . . . . . . . . . . 14
⊢ (y
∈ ℕ → y ∈
ℂ) |
| 35 | 32, 33, 34 | syl2an 349 |
. . . . . . . . . . . . 13
⊢ ((B
∈ ℕ ∧ y ∈ ℕ)
→ ((B + y) + 1) = (B +
(y + 1))) |
| 36 | 35 | adantll 309 |
. . . . . . . . . . . 12
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → ((B + y) + 1) =
(B + (y
+ 1))) |
| 37 | 36 | opreq2d 3013 |
. . . . . . . . . . 11
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → (A↑((B +
y) + 1)) = (A↑(B +
(y + 1)))) |
| 38 | | expp1t 4678 |
. . . . . . . . . . . 12
⊢ ((A
∈ ℂ ∧ (B + y) ∈ ℕ) → (A↑((B +
y) + 1)) = ((A↑(B +
y)) · A)) |
| 39 | | pm3.26 256 |
. . . . . . . . . . . . 13
⊢ ((A
∈ ℂ ∧ B ∈ ℕ)
→ A ∈ ℂ) |
| 40 | 39 | adantr 306 |
. . . . . . . . . . . 12
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → A ∈ ℂ) |
| 41 | | nnaddclt 4436 |
. . . . . . . . . . . . 13
⊢ ((B
∈ ℕ ∧ y ∈ ℕ)
→ (B + y) ∈ ℕ) |
| 42 | 41 | adantll 309 |
. . . . . . . . . . . 12
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → (B + y) ∈
ℕ) |
| 43 | 38, 40, 42 | sylanc 361 |
. . . . . . . . . . 11
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → (A↑((B +
y) + 1)) = ((A↑(B +
y)) · A)) |
| 44 | 37, 43 | eqtr3d 1130 |
. . . . . . . . . 10
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → (A↑(B +
(y + 1))) = ((A↑(B +
y)) · A)) |
| 45 | | expp1t 4678 |
. . . . . . . . . . . . 13
⊢ ((A
∈ ℂ ∧ y ∈ ℕ)
→ (A↑(y + 1)) = ((A↑y)
· A)) |
| 46 | 45 | adantlr 310 |
. . . . . . . . . . . 12
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → (A↑(y + 1))
= ((A↑y) · A)) |
| 47 | 46 | opreq2d 3013 |
. . . . . . . . . . 11
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → ((A↑B)
· (A↑(y + 1))) = ((A↑B)
· ((A↑y) · A))) |
| 48 | | axmulass 4073 |
. . . . . . . . . . . 12
⊢ (((A↑B) ∈
ℂ ∧ (A↑y) ∈ ℂ ∧ A ∈ ℂ) → (((A↑B)
· (A↑y)) · A)
= ((A↑B) · ((A↑y)
· A))) |
| 49 | | expclt 4696 |
. . . . . . . . . . . . 13
⊢ ((A
∈ ℂ ∧ B ∈ ℕ)
→ (A↑B) ∈ ℂ) |
| 50 | 49 | adantr 306 |
. . . . . . . . . . . 12
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → (A↑B) ∈
ℂ) |
| 51 | | expclt 4696 |
. . . . . . . . . . . . 13
⊢ ((A
∈ ℂ ∧ y ∈ ℕ)
→ (A↑y) ∈ ℂ) |
| 52 | 51 | adantlr 310 |
. . . . . . . . . . . 12
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → (A↑y) ∈
ℂ) |
| 53 | 48, 50, 52, 40 | syl3anc 629 |
. . . . . . . . . . 11
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → (((A↑B)
· (A↑y)) · A)
= ((A↑B) · ((A↑y)
· A))) |
| 54 | 47, 53 | eqtr4d 1131 |
. . . . . . . . . 10
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → ((A↑B)
· (A↑(y + 1))) = (((A↑B)
· (A↑y)) · A)) |
| 55 | 44, 54 | cleq12d 1115 |
. . . . . . . . 9
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → ((A↑(B +
(y + 1))) = ((A↑B)
· (A↑(y + 1))) ↔ ((A↑(B +
y)) · A) = (((A↑B)
· (A↑y)) · A))) |
| 56 | | opreq1 3006 |
. . . . . . . . 9
⊢ ((A↑(B +
y)) = ((A↑B)
· (A↑y)) → ((A↑(B +
y)) · A) = (((A↑B)
· (A↑y)) · A)) |
| 57 | 55, 56 | syl5bir 184 |
. . . . . . . 8
⊢ (((A
∈ ℂ ∧ B ∈ ℕ)
∧ y ∈ ℕ) → ((A↑(B +
y)) = ((A↑B)
· (A↑y)) → (A↑(B +
(y + 1))) = ((A↑B)
· (A↑(y + 1))))) |
| 58 | 57 | exp 291 |
. . . . . . 7
⊢ ((A
∈ ℂ ∧ B ∈ ℕ)
→ (y ∈ ℕ → ((A↑(B +
y)) = ((A↑B)
· (A↑y)) → (A↑(B +
(y + 1))) = ((A↑B)
· (A↑(y + 1)))))) |
| 59 | 58 | com12 13 |
. . . . . 6
⊢ (y
∈ ℕ → ((A ∈ ℂ
∧ B ∈ ℕ) → ((A↑(B +
y)) = ((A↑B)
· (A↑y)) → (A↑(B +
(y + 1))) = ((A↑B)
· (A↑(y + 1)))))) |
| 60 | 59 | a2d 15 |
. . . . 5
⊢ (y
∈ ℕ → (((A ∈ ℂ
∧ B ∈ ℕ) → (A↑(B +
y)) = ((A↑B)
· (A↑y))) → ((A
∈ ℂ ∧ B ∈ ℕ)
→ (A↑(B + (y + 1))) =
((A↑B) · (A↑(y +
1)))))) |
| 61 | 6, 12, 18, 24, 29, 60 | nnind 4434 |
. . . 4
⊢ (C
∈ ℕ → ((A ∈ ℂ
∧ B ∈ ℕ) → (A↑(B +
C)) = ((A↑B)
· (A↑C)))) |
| 62 | 61 | exp3a 292 |
. . 3
⊢ (C
∈ ℕ → (A ∈ ℂ
→ (B ∈ ℕ → (A↑(B +
C)) = ((A↑B)
· (A↑C))))) |
| 63 | 62 | com3l 34 |
. 2
⊢ (A
∈ ℂ → (B ∈ ℕ
→ (C ∈ ℕ → (A↑(B +
C)) = ((A↑B)
· (A↑C))))) |
| 64 | 63 | 3imp 608 |
1
⊢ ((A
∈ ℂ ∧ B ∈ ℕ ∧
C ∈ ℕ) → (A↑(B +
C)) = ((A↑B)
· (A↑C))) |