| Step | Hyp | Ref | Expression | 
|---|
| 1 |  | oveq2 7439 | . . . . . . 7
⊢ (𝑗 = 0 → (𝑀 + 𝑗) = (𝑀 + 0)) | 
| 2 | 1 | oveq2d 7447 | . . . . . 6
⊢ (𝑗 = 0 → (𝐴↑(𝑀 + 𝑗)) = (𝐴↑(𝑀 + 0))) | 
| 3 |  | oveq2 7439 | . . . . . . 7
⊢ (𝑗 = 0 → (𝐴↑𝑗) = (𝐴↑0)) | 
| 4 | 3 | oveq2d 7447 | . . . . . 6
⊢ (𝑗 = 0 → ((𝐴↑𝑀) · (𝐴↑𝑗)) = ((𝐴↑𝑀) · (𝐴↑0))) | 
| 5 | 2, 4 | eqeq12d 2753 | . . . . 5
⊢ (𝑗 = 0 → ((𝐴↑(𝑀 + 𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑗)) ↔ (𝐴↑(𝑀 + 0)) = ((𝐴↑𝑀) · (𝐴↑0)))) | 
| 6 | 5 | imbi2d 340 | . . . 4
⊢ (𝑗 = 0 → (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0) → (𝐴↑(𝑀 + 𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑗))) ↔ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0) → (𝐴↑(𝑀 + 0)) = ((𝐴↑𝑀) · (𝐴↑0))))) | 
| 7 |  | oveq2 7439 | . . . . . . 7
⊢ (𝑗 = 𝑘 → (𝑀 + 𝑗) = (𝑀 + 𝑘)) | 
| 8 | 7 | oveq2d 7447 | . . . . . 6
⊢ (𝑗 = 𝑘 → (𝐴↑(𝑀 + 𝑗)) = (𝐴↑(𝑀 + 𝑘))) | 
| 9 |  | oveq2 7439 | . . . . . . 7
⊢ (𝑗 = 𝑘 → (𝐴↑𝑗) = (𝐴↑𝑘)) | 
| 10 | 9 | oveq2d 7447 | . . . . . 6
⊢ (𝑗 = 𝑘 → ((𝐴↑𝑀) · (𝐴↑𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑘))) | 
| 11 | 8, 10 | eqeq12d 2753 | . . . . 5
⊢ (𝑗 = 𝑘 → ((𝐴↑(𝑀 + 𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑗)) ↔ (𝐴↑(𝑀 + 𝑘)) = ((𝐴↑𝑀) · (𝐴↑𝑘)))) | 
| 12 | 11 | imbi2d 340 | . . . 4
⊢ (𝑗 = 𝑘 → (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0) → (𝐴↑(𝑀 + 𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑗))) ↔ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0) → (𝐴↑(𝑀 + 𝑘)) = ((𝐴↑𝑀) · (𝐴↑𝑘))))) | 
| 13 |  | oveq2 7439 | . . . . . . 7
⊢ (𝑗 = (𝑘 + 1) → (𝑀 + 𝑗) = (𝑀 + (𝑘 + 1))) | 
| 14 | 13 | oveq2d 7447 | . . . . . 6
⊢ (𝑗 = (𝑘 + 1) → (𝐴↑(𝑀 + 𝑗)) = (𝐴↑(𝑀 + (𝑘 + 1)))) | 
| 15 |  | oveq2 7439 | . . . . . . 7
⊢ (𝑗 = (𝑘 + 1) → (𝐴↑𝑗) = (𝐴↑(𝑘 + 1))) | 
| 16 | 15 | oveq2d 7447 | . . . . . 6
⊢ (𝑗 = (𝑘 + 1) → ((𝐴↑𝑀) · (𝐴↑𝑗)) = ((𝐴↑𝑀) · (𝐴↑(𝑘 + 1)))) | 
| 17 | 14, 16 | eqeq12d 2753 | . . . . 5
⊢ (𝑗 = (𝑘 + 1) → ((𝐴↑(𝑀 + 𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑗)) ↔ (𝐴↑(𝑀 + (𝑘 + 1))) = ((𝐴↑𝑀) · (𝐴↑(𝑘 + 1))))) | 
| 18 | 17 | imbi2d 340 | . . . 4
⊢ (𝑗 = (𝑘 + 1) → (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0) → (𝐴↑(𝑀 + 𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑗))) ↔ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0) → (𝐴↑(𝑀 + (𝑘 + 1))) = ((𝐴↑𝑀) · (𝐴↑(𝑘 + 1)))))) | 
| 19 |  | oveq2 7439 | . . . . . . 7
⊢ (𝑗 = 𝑁 → (𝑀 + 𝑗) = (𝑀 + 𝑁)) | 
| 20 | 19 | oveq2d 7447 | . . . . . 6
⊢ (𝑗 = 𝑁 → (𝐴↑(𝑀 + 𝑗)) = (𝐴↑(𝑀 + 𝑁))) | 
| 21 |  | oveq2 7439 | . . . . . . 7
⊢ (𝑗 = 𝑁 → (𝐴↑𝑗) = (𝐴↑𝑁)) | 
| 22 | 21 | oveq2d 7447 | . . . . . 6
⊢ (𝑗 = 𝑁 → ((𝐴↑𝑀) · (𝐴↑𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑁))) | 
| 23 | 20, 22 | eqeq12d 2753 | . . . . 5
⊢ (𝑗 = 𝑁 → ((𝐴↑(𝑀 + 𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑗)) ↔ (𝐴↑(𝑀 + 𝑁)) = ((𝐴↑𝑀) · (𝐴↑𝑁)))) | 
| 24 | 23 | imbi2d 340 | . . . 4
⊢ (𝑗 = 𝑁 → (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0) → (𝐴↑(𝑀 + 𝑗)) = ((𝐴↑𝑀) · (𝐴↑𝑗))) ↔ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0) → (𝐴↑(𝑀 + 𝑁)) = ((𝐴↑𝑀) · (𝐴↑𝑁))))) | 
| 25 |  | nn0cn 12536 | . . . . . . . . 9
⊢ (𝑀 ∈ ℕ0
→ 𝑀 ∈
ℂ) | 
| 26 | 25 | addridd 11461 | . . . . . . . 8
⊢ (𝑀 ∈ ℕ0
→ (𝑀 + 0) = 𝑀) | 
| 27 | 26 | adantl 481 | . . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
→ (𝑀 + 0) = 𝑀) | 
| 28 | 27 | oveq2d 7447 | . . . . . 6
⊢ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
→ (𝐴↑(𝑀 + 0)) = (𝐴↑𝑀)) | 
| 29 |  | expcl 14120 | . . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
→ (𝐴↑𝑀) ∈
ℂ) | 
| 30 | 29 | mulridd 11278 | . . . . . 6
⊢ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
→ ((𝐴↑𝑀) · 1) = (𝐴↑𝑀)) | 
| 31 | 28, 30 | eqtr4d 2780 | . . . . 5
⊢ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
→ (𝐴↑(𝑀 + 0)) = ((𝐴↑𝑀) · 1)) | 
| 32 |  | exp0 14106 | . . . . . . 7
⊢ (𝐴 ∈ ℂ → (𝐴↑0) = 1) | 
| 33 | 32 | adantr 480 | . . . . . 6
⊢ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
→ (𝐴↑0) =
1) | 
| 34 | 33 | oveq2d 7447 | . . . . 5
⊢ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
→ ((𝐴↑𝑀) · (𝐴↑0)) = ((𝐴↑𝑀) · 1)) | 
| 35 | 31, 34 | eqtr4d 2780 | . . . 4
⊢ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
→ (𝐴↑(𝑀 + 0)) = ((𝐴↑𝑀) · (𝐴↑0))) | 
| 36 |  | oveq1 7438 | . . . . . . 7
⊢ ((𝐴↑(𝑀 + 𝑘)) = ((𝐴↑𝑀) · (𝐴↑𝑘)) → ((𝐴↑(𝑀 + 𝑘)) · 𝐴) = (((𝐴↑𝑀) · (𝐴↑𝑘)) · 𝐴)) | 
| 37 |  | nn0cn 12536 | . . . . . . . . . . . 12
⊢ (𝑘 ∈ ℕ0
→ 𝑘 ∈
ℂ) | 
| 38 |  | ax-1cn 11213 | . . . . . . . . . . . . 13
⊢ 1 ∈
ℂ | 
| 39 |  | addass 11242 | . . . . . . . . . . . . 13
⊢ ((𝑀 ∈ ℂ ∧ 𝑘 ∈ ℂ ∧ 1 ∈
ℂ) → ((𝑀 + 𝑘) + 1) = (𝑀 + (𝑘 + 1))) | 
| 40 | 38, 39 | mp3an3 1452 | . . . . . . . . . . . 12
⊢ ((𝑀 ∈ ℂ ∧ 𝑘 ∈ ℂ) → ((𝑀 + 𝑘) + 1) = (𝑀 + (𝑘 + 1))) | 
| 41 | 25, 37, 40 | syl2an 596 | . . . . . . . . . . 11
⊢ ((𝑀 ∈ ℕ0
∧ 𝑘 ∈
ℕ0) → ((𝑀 + 𝑘) + 1) = (𝑀 + (𝑘 + 1))) | 
| 42 | 41 | adantll 714 | . . . . . . . . . 10
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → ((𝑀 + 𝑘) + 1) = (𝑀 + (𝑘 + 1))) | 
| 43 | 42 | oveq2d 7447 | . . . . . . . . 9
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → (𝐴↑((𝑀 + 𝑘) + 1)) = (𝐴↑(𝑀 + (𝑘 + 1)))) | 
| 44 |  | simpll 767 | . . . . . . . . . 10
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → 𝐴 ∈ ℂ) | 
| 45 |  | nn0addcl 12561 | . . . . . . . . . . 11
⊢ ((𝑀 ∈ ℕ0
∧ 𝑘 ∈
ℕ0) → (𝑀 + 𝑘) ∈
ℕ0) | 
| 46 | 45 | adantll 714 | . . . . . . . . . 10
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → (𝑀 + 𝑘) ∈
ℕ0) | 
| 47 |  | expp1 14109 | . . . . . . . . . 10
⊢ ((𝐴 ∈ ℂ ∧ (𝑀 + 𝑘) ∈ ℕ0) → (𝐴↑((𝑀 + 𝑘) + 1)) = ((𝐴↑(𝑀 + 𝑘)) · 𝐴)) | 
| 48 | 44, 46, 47 | syl2anc 584 | . . . . . . . . 9
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → (𝐴↑((𝑀 + 𝑘) + 1)) = ((𝐴↑(𝑀 + 𝑘)) · 𝐴)) | 
| 49 | 43, 48 | eqtr3d 2779 | . . . . . . . 8
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → (𝐴↑(𝑀 + (𝑘 + 1))) = ((𝐴↑(𝑀 + 𝑘)) · 𝐴)) | 
| 50 |  | expp1 14109 | . . . . . . . . . . 11
⊢ ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℕ0)
→ (𝐴↑(𝑘 + 1)) = ((𝐴↑𝑘) · 𝐴)) | 
| 51 | 50 | adantlr 715 | . . . . . . . . . 10
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → (𝐴↑(𝑘 + 1)) = ((𝐴↑𝑘) · 𝐴)) | 
| 52 | 51 | oveq2d 7447 | . . . . . . . . 9
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → ((𝐴↑𝑀) · (𝐴↑(𝑘 + 1))) = ((𝐴↑𝑀) · ((𝐴↑𝑘) · 𝐴))) | 
| 53 | 29 | adantr 480 | . . . . . . . . . 10
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → (𝐴↑𝑀) ∈ ℂ) | 
| 54 |  | expcl 14120 | . . . . . . . . . . 11
⊢ ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℕ0)
→ (𝐴↑𝑘) ∈
ℂ) | 
| 55 | 54 | adantlr 715 | . . . . . . . . . 10
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → (𝐴↑𝑘) ∈ ℂ) | 
| 56 | 53, 55, 44 | mulassd 11284 | . . . . . . . . 9
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → (((𝐴↑𝑀) · (𝐴↑𝑘)) · 𝐴) = ((𝐴↑𝑀) · ((𝐴↑𝑘) · 𝐴))) | 
| 57 | 52, 56 | eqtr4d 2780 | . . . . . . . 8
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → ((𝐴↑𝑀) · (𝐴↑(𝑘 + 1))) = (((𝐴↑𝑀) · (𝐴↑𝑘)) · 𝐴)) | 
| 58 | 49, 57 | eqeq12d 2753 | . . . . . . 7
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → ((𝐴↑(𝑀 + (𝑘 + 1))) = ((𝐴↑𝑀) · (𝐴↑(𝑘 + 1))) ↔ ((𝐴↑(𝑀 + 𝑘)) · 𝐴) = (((𝐴↑𝑀) · (𝐴↑𝑘)) · 𝐴))) | 
| 59 | 36, 58 | imbitrrid 246 | . . . . . 6
⊢ (((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0)
∧ 𝑘 ∈
ℕ0) → ((𝐴↑(𝑀 + 𝑘)) = ((𝐴↑𝑀) · (𝐴↑𝑘)) → (𝐴↑(𝑀 + (𝑘 + 1))) = ((𝐴↑𝑀) · (𝐴↑(𝑘 + 1))))) | 
| 60 | 59 | expcom 413 | . . . . 5
⊢ (𝑘 ∈ ℕ0
→ ((𝐴 ∈ ℂ
∧ 𝑀 ∈
ℕ0) → ((𝐴↑(𝑀 + 𝑘)) = ((𝐴↑𝑀) · (𝐴↑𝑘)) → (𝐴↑(𝑀 + (𝑘 + 1))) = ((𝐴↑𝑀) · (𝐴↑(𝑘 + 1)))))) | 
| 61 | 60 | a2d 29 | . . . 4
⊢ (𝑘 ∈ ℕ0
→ (((𝐴 ∈ ℂ
∧ 𝑀 ∈
ℕ0) → (𝐴↑(𝑀 + 𝑘)) = ((𝐴↑𝑀) · (𝐴↑𝑘))) → ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0) → (𝐴↑(𝑀 + (𝑘 + 1))) = ((𝐴↑𝑀) · (𝐴↑(𝑘 + 1)))))) | 
| 62 | 6, 12, 18, 24, 35, 61 | nn0ind 12713 | . . 3
⊢ (𝑁 ∈ ℕ0
→ ((𝐴 ∈ ℂ
∧ 𝑀 ∈
ℕ0) → (𝐴↑(𝑀 + 𝑁)) = ((𝐴↑𝑀) · (𝐴↑𝑁)))) | 
| 63 | 62 | expdcom 414 | . 2
⊢ (𝐴 ∈ ℂ → (𝑀 ∈ ℕ0
→ (𝑁 ∈
ℕ0 → (𝐴↑(𝑀 + 𝑁)) = ((𝐴↑𝑀) · (𝐴↑𝑁))))) | 
| 64 | 63 | 3imp 1111 | 1
⊢ ((𝐴 ∈ ℂ ∧ 𝑀 ∈ ℕ0
∧ 𝑁 ∈
ℕ0) → (𝐴↑(𝑀 + 𝑁)) = ((𝐴↑𝑀) · (𝐴↑𝑁))) |