| Step | Hyp | Ref
| Expression |
| 1 | | fwddifnp1.1 |
. . . . . . 7
⊢ (𝜑 → 𝑁 ∈
ℕ0) |
| 2 | | elfzelz 12342 |
. . . . . . 7
⊢ (𝑘 ∈ (0...(𝑁 + 1)) → 𝑘 ∈ ℤ) |
| 3 | | bcpasc 13108 |
. . . . . . 7
⊢ ((𝑁 ∈ ℕ0
∧ 𝑘 ∈ ℤ)
→ ((𝑁C𝑘) + (𝑁C(𝑘 − 1))) = ((𝑁 + 1)C𝑘)) |
| 4 | 1, 2, 3 | syl2an 494 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁C𝑘) + (𝑁C(𝑘 − 1))) = ((𝑁 + 1)C𝑘)) |
| 5 | 4 | oveq1d 6665 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (((𝑁C𝑘) + (𝑁C(𝑘 − 1))) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = (((𝑁 + 1)C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) |
| 6 | | bccl 13109 |
. . . . . . . . . . 11
⊢ ((𝑁 ∈ ℕ0
∧ 𝑘 ∈ ℤ)
→ (𝑁C𝑘) ∈
ℕ0) |
| 7 | 1, 2, 6 | syl2an 494 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (𝑁C𝑘) ∈
ℕ0) |
| 8 | 7 | nn0cnd 11353 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (𝑁C𝑘) ∈ ℂ) |
| 9 | | peano2zm 11420 |
. . . . . . . . . . . 12
⊢ (𝑘 ∈ ℤ → (𝑘 − 1) ∈
ℤ) |
| 10 | 2, 9 | syl 17 |
. . . . . . . . . . 11
⊢ (𝑘 ∈ (0...(𝑁 + 1)) → (𝑘 − 1) ∈ ℤ) |
| 11 | | bccl 13109 |
. . . . . . . . . . 11
⊢ ((𝑁 ∈ ℕ0
∧ (𝑘 − 1) ∈
ℤ) → (𝑁C(𝑘 − 1)) ∈
ℕ0) |
| 12 | 1, 10, 11 | syl2an 494 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (𝑁C(𝑘 − 1)) ∈
ℕ0) |
| 13 | 12 | nn0cnd 11353 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (𝑁C(𝑘 − 1)) ∈ ℂ) |
| 14 | 8, 13 | addcomd 10238 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁C𝑘) + (𝑁C(𝑘 − 1))) = ((𝑁C(𝑘 − 1)) + (𝑁C𝑘))) |
| 15 | 14 | oveq1d 6665 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (((𝑁C𝑘) + (𝑁C(𝑘 − 1))) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = (((𝑁C(𝑘 − 1)) + (𝑁C𝑘)) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) |
| 16 | | peano2nn0 11333 |
. . . . . . . . . . . . . 14
⊢ (𝑁 ∈ ℕ0
→ (𝑁 + 1) ∈
ℕ0) |
| 17 | 1, 16 | syl 17 |
. . . . . . . . . . . . 13
⊢ (𝜑 → (𝑁 + 1) ∈
ℕ0) |
| 18 | 17 | nn0zd 11480 |
. . . . . . . . . . . 12
⊢ (𝜑 → (𝑁 + 1) ∈ ℤ) |
| 19 | | zsubcl 11419 |
. . . . . . . . . . . 12
⊢ (((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ) → ((𝑁 + 1) − 𝑘) ∈ ℤ) |
| 20 | 18, 2, 19 | syl2an 494 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁 + 1) − 𝑘) ∈ ℤ) |
| 21 | | m1expcl 12883 |
. . . . . . . . . . 11
⊢ (((𝑁 + 1) − 𝑘) ∈ ℤ → (-1↑((𝑁 + 1) − 𝑘)) ∈ ℤ) |
| 22 | 20, 21 | syl 17 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑((𝑁 + 1) − 𝑘)) ∈ ℤ) |
| 23 | 22 | zcnd 11483 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑((𝑁 + 1) − 𝑘)) ∈ ℂ) |
| 24 | | fwddifnp1.3 |
. . . . . . . . . . 11
⊢ (𝜑 → 𝐹:𝐴⟶ℂ) |
| 25 | 24 | adantr 481 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → 𝐹:𝐴⟶ℂ) |
| 26 | | fwddifnp1.5 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (𝑋 + 𝑘) ∈ 𝐴) |
| 27 | 25, 26 | ffvelrnd 6360 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (𝐹‘(𝑋 + 𝑘)) ∈ ℂ) |
| 28 | 23, 27 | mulcld 10060 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘))) ∈ ℂ) |
| 29 | 13, 8, 28 | adddird 10065 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (((𝑁C(𝑘 − 1)) + (𝑁C𝑘)) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = (((𝑁C(𝑘 − 1)) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) + ((𝑁C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 30 | 15, 29 | eqtrd 2656 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (((𝑁C𝑘) + (𝑁C(𝑘 − 1))) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = (((𝑁C(𝑘 − 1)) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) + ((𝑁C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 31 | 1 | adantr 481 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → 𝑁 ∈
ℕ0) |
| 32 | 31 | nn0cnd 11353 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → 𝑁 ∈ ℂ) |
| 33 | 2 | adantl 482 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → 𝑘 ∈ ℤ) |
| 34 | 33 | zcnd 11483 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → 𝑘 ∈ ℂ) |
| 35 | | 1cnd 10056 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → 1 ∈
ℂ) |
| 36 | 32, 34, 35 | subsub3d 10422 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (𝑁 − (𝑘 − 1)) = ((𝑁 + 1) − 𝑘)) |
| 37 | 36 | eqcomd 2628 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁 + 1) − 𝑘) = (𝑁 − (𝑘 − 1))) |
| 38 | 37 | oveq2d 6666 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑((𝑁 + 1) − 𝑘)) = (-1↑(𝑁 − (𝑘 − 1)))) |
| 39 | 38 | oveq1d 6665 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘))) = ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) |
| 40 | 39 | oveq2d 6666 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁C(𝑘 − 1)) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = ((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘))))) |
| 41 | 32, 35, 34 | addsubd 10413 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁 + 1) − 𝑘) = ((𝑁 − 𝑘) + 1)) |
| 42 | 41 | oveq2d 6666 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑((𝑁 + 1) − 𝑘)) = (-1↑((𝑁 − 𝑘) + 1))) |
| 43 | | neg1cn 11124 |
. . . . . . . . . . . . . . 15
⊢ -1 ∈
ℂ |
| 44 | 43 | a1i 11 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → -1 ∈
ℂ) |
| 45 | | neg1ne0 11126 |
. . . . . . . . . . . . . . 15
⊢ -1 ≠
0 |
| 46 | 45 | a1i 11 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → -1 ≠ 0) |
| 47 | 1 | nn0zd 11480 |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → 𝑁 ∈ ℤ) |
| 48 | | zsubcl 11419 |
. . . . . . . . . . . . . . 15
⊢ ((𝑁 ∈ ℤ ∧ 𝑘 ∈ ℤ) → (𝑁 − 𝑘) ∈ ℤ) |
| 49 | 47, 2, 48 | syl2an 494 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (𝑁 − 𝑘) ∈ ℤ) |
| 50 | 44, 46, 49 | expp1zd 13017 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑((𝑁 − 𝑘) + 1)) = ((-1↑(𝑁 − 𝑘)) · -1)) |
| 51 | 42, 50 | eqtrd 2656 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑((𝑁 + 1) − 𝑘)) = ((-1↑(𝑁 − 𝑘)) · -1)) |
| 52 | | m1expcl 12883 |
. . . . . . . . . . . . . . 15
⊢ ((𝑁 − 𝑘) ∈ ℤ → (-1↑(𝑁 − 𝑘)) ∈ ℤ) |
| 53 | 49, 52 | syl 17 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑(𝑁 − 𝑘)) ∈ ℤ) |
| 54 | 53 | zcnd 11483 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑(𝑁 − 𝑘)) ∈ ℂ) |
| 55 | 54, 44 | mulcomd 10061 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((-1↑(𝑁 − 𝑘)) · -1) = (-1 ·
(-1↑(𝑁 − 𝑘)))) |
| 56 | 54 | mulm1d 10482 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1 · (-1↑(𝑁 − 𝑘))) = -(-1↑(𝑁 − 𝑘))) |
| 57 | 51, 55, 56 | 3eqtrd 2660 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑((𝑁 + 1) − 𝑘)) = -(-1↑(𝑁 − 𝑘))) |
| 58 | 57 | oveq1d 6665 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘))) = (-(-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) |
| 59 | 54, 27 | mulneg1d 10483 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-(-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))) = -((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) |
| 60 | 58, 59 | eqtrd 2656 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘))) = -((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) |
| 61 | 60 | oveq2d 6666 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = ((𝑁C𝑘) · -((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) |
| 62 | 54, 27 | mulcld 10060 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))) ∈ ℂ) |
| 63 | 8, 62 | mulneg2d 10484 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁C𝑘) · -((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = -((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) |
| 64 | 61, 63 | eqtrd 2656 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = -((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) |
| 65 | 40, 64 | oveq12d 6668 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (((𝑁C(𝑘 − 1)) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) + ((𝑁C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) = (((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) + -((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 66 | | zsubcl 11419 |
. . . . . . . . . . . 12
⊢ ((𝑁 ∈ ℤ ∧ (𝑘 − 1) ∈ ℤ)
→ (𝑁 − (𝑘 − 1)) ∈
ℤ) |
| 67 | 47, 10, 66 | syl2an 494 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (𝑁 − (𝑘 − 1)) ∈ ℤ) |
| 68 | | m1expcl 12883 |
. . . . . . . . . . 11
⊢ ((𝑁 − (𝑘 − 1)) ∈ ℤ →
(-1↑(𝑁 − (𝑘 − 1))) ∈
ℤ) |
| 69 | 67, 68 | syl 17 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑(𝑁 − (𝑘 − 1))) ∈
ℤ) |
| 70 | 69 | zcnd 11483 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (-1↑(𝑁 − (𝑘 − 1))) ∈
ℂ) |
| 71 | 70, 27 | mulcld 10060 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘))) ∈ ℂ) |
| 72 | 13, 71 | mulcld 10060 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) ∈ ℂ) |
| 73 | 8, 62 | mulcld 10060 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → ((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) ∈ ℂ) |
| 74 | 72, 73 | negsubd 10398 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) + -((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) = (((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) − ((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 75 | 30, 65, 74 | 3eqtrd 2660 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (((𝑁C𝑘) + (𝑁C(𝑘 − 1))) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = (((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) − ((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 76 | 5, 75 | eqtr3d 2658 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ (0...(𝑁 + 1))) → (((𝑁 + 1)C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = (((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) − ((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 77 | 76 | sumeq2dv 14433 |
. . 3
⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 + 1))(((𝑁 + 1)C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = Σ𝑘 ∈ (0...(𝑁 + 1))(((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) − ((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 78 | | fzfid 12772 |
. . . 4
⊢ (𝜑 → (0...(𝑁 + 1)) ∈ Fin) |
| 79 | 78, 72, 73 | fsumsub 14520 |
. . 3
⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 + 1))(((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) − ((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) = (Σ𝑘 ∈ (0...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) − Σ𝑘 ∈ (0...(𝑁 + 1))((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 80 | | nn0uz 11722 |
. . . . . . . 8
⊢
ℕ0 = (ℤ≥‘0) |
| 81 | 17, 80 | syl6eleq 2711 |
. . . . . . 7
⊢ (𝜑 → (𝑁 + 1) ∈
(ℤ≥‘0)) |
| 82 | | oveq1 6657 |
. . . . . . . . 9
⊢ (𝑘 = 0 → (𝑘 − 1) = (0 − 1)) |
| 83 | 82 | oveq2d 6666 |
. . . . . . . 8
⊢ (𝑘 = 0 → (𝑁C(𝑘 − 1)) = (𝑁C(0 − 1))) |
| 84 | 82 | oveq2d 6666 |
. . . . . . . . . 10
⊢ (𝑘 = 0 → (𝑁 − (𝑘 − 1)) = (𝑁 − (0 − 1))) |
| 85 | 84 | oveq2d 6666 |
. . . . . . . . 9
⊢ (𝑘 = 0 → (-1↑(𝑁 − (𝑘 − 1))) = (-1↑(𝑁 − (0 − 1)))) |
| 86 | | oveq2 6658 |
. . . . . . . . . 10
⊢ (𝑘 = 0 → (𝑋 + 𝑘) = (𝑋 + 0)) |
| 87 | 86 | fveq2d 6195 |
. . . . . . . . 9
⊢ (𝑘 = 0 → (𝐹‘(𝑋 + 𝑘)) = (𝐹‘(𝑋 + 0))) |
| 88 | 85, 87 | oveq12d 6668 |
. . . . . . . 8
⊢ (𝑘 = 0 → ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘))) = ((-1↑(𝑁 − (0 − 1))) · (𝐹‘(𝑋 + 0)))) |
| 89 | 83, 88 | oveq12d 6668 |
. . . . . . 7
⊢ (𝑘 = 0 → ((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) = ((𝑁C(0 − 1)) · ((-1↑(𝑁 − (0 − 1)))
· (𝐹‘(𝑋 + 0))))) |
| 90 | 81, 72, 89 | fsum1p 14482 |
. . . . . 6
⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) = (((𝑁C(0 − 1)) · ((-1↑(𝑁 − (0 − 1)))
· (𝐹‘(𝑋 + 0)))) + Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))))) |
| 91 | | df-neg 10269 |
. . . . . . . . . . 11
⊢ -1 = (0
− 1) |
| 92 | 91 | oveq2i 6661 |
. . . . . . . . . 10
⊢ (𝑁C-1) = (𝑁C(0 − 1)) |
| 93 | | bcneg1 31622 |
. . . . . . . . . . 11
⊢ (𝑁 ∈ ℕ0
→ (𝑁C-1) =
0) |
| 94 | 1, 93 | syl 17 |
. . . . . . . . . 10
⊢ (𝜑 → (𝑁C-1) = 0) |
| 95 | 92, 94 | syl5eqr 2670 |
. . . . . . . . 9
⊢ (𝜑 → (𝑁C(0 − 1)) = 0) |
| 96 | 95 | oveq1d 6665 |
. . . . . . . 8
⊢ (𝜑 → ((𝑁C(0 − 1)) · ((-1↑(𝑁 − (0 − 1)))
· (𝐹‘(𝑋 + 0)))) = (0 ·
((-1↑(𝑁 − (0
− 1))) · (𝐹‘(𝑋 + 0))))) |
| 97 | | 0z 11388 |
. . . . . . . . . . . . . . 15
⊢ 0 ∈
ℤ |
| 98 | | 1z 11407 |
. . . . . . . . . . . . . . 15
⊢ 1 ∈
ℤ |
| 99 | | zsubcl 11419 |
. . . . . . . . . . . . . . 15
⊢ ((0
∈ ℤ ∧ 1 ∈ ℤ) → (0 − 1) ∈
ℤ) |
| 100 | 97, 98, 99 | mp2an 708 |
. . . . . . . . . . . . . 14
⊢ (0
− 1) ∈ ℤ |
| 101 | 100 | a1i 11 |
. . . . . . . . . . . . 13
⊢ (𝜑 → (0 − 1) ∈
ℤ) |
| 102 | 47, 101 | zsubcld 11487 |
. . . . . . . . . . . 12
⊢ (𝜑 → (𝑁 − (0 − 1)) ∈
ℤ) |
| 103 | | m1expcl 12883 |
. . . . . . . . . . . 12
⊢ ((𝑁 − (0 − 1)) ∈
ℤ → (-1↑(𝑁
− (0 − 1))) ∈ ℤ) |
| 104 | 102, 103 | syl 17 |
. . . . . . . . . . 11
⊢ (𝜑 → (-1↑(𝑁 − (0 − 1))) ∈
ℤ) |
| 105 | 104 | zcnd 11483 |
. . . . . . . . . 10
⊢ (𝜑 → (-1↑(𝑁 − (0 − 1))) ∈
ℂ) |
| 106 | | eluzfz1 12348 |
. . . . . . . . . . . . 13
⊢ ((𝑁 + 1) ∈
(ℤ≥‘0) → 0 ∈ (0...(𝑁 + 1))) |
| 107 | 81, 106 | syl 17 |
. . . . . . . . . . . 12
⊢ (𝜑 → 0 ∈ (0...(𝑁 + 1))) |
| 108 | 26 | ralrimiva 2966 |
. . . . . . . . . . . 12
⊢ (𝜑 → ∀𝑘 ∈ (0...(𝑁 + 1))(𝑋 + 𝑘) ∈ 𝐴) |
| 109 | 86 | eleq1d 2686 |
. . . . . . . . . . . . 13
⊢ (𝑘 = 0 → ((𝑋 + 𝑘) ∈ 𝐴 ↔ (𝑋 + 0) ∈ 𝐴)) |
| 110 | 109 | rspcva 3307 |
. . . . . . . . . . . 12
⊢ ((0
∈ (0...(𝑁 + 1)) ∧
∀𝑘 ∈
(0...(𝑁 + 1))(𝑋 + 𝑘) ∈ 𝐴) → (𝑋 + 0) ∈ 𝐴) |
| 111 | 107, 108,
110 | syl2anc 693 |
. . . . . . . . . . 11
⊢ (𝜑 → (𝑋 + 0) ∈ 𝐴) |
| 112 | 24, 111 | ffvelrnd 6360 |
. . . . . . . . . 10
⊢ (𝜑 → (𝐹‘(𝑋 + 0)) ∈ ℂ) |
| 113 | 105, 112 | mulcld 10060 |
. . . . . . . . 9
⊢ (𝜑 → ((-1↑(𝑁 − (0 − 1)))
· (𝐹‘(𝑋 + 0))) ∈
ℂ) |
| 114 | 113 | mul02d 10234 |
. . . . . . . 8
⊢ (𝜑 → (0 ·
((-1↑(𝑁 − (0
− 1))) · (𝐹‘(𝑋 + 0)))) = 0) |
| 115 | 96, 114 | eqtrd 2656 |
. . . . . . 7
⊢ (𝜑 → ((𝑁C(0 − 1)) · ((-1↑(𝑁 − (0 − 1)))
· (𝐹‘(𝑋 + 0)))) = 0) |
| 116 | 115 | oveq1d 6665 |
. . . . . 6
⊢ (𝜑 → (((𝑁C(0 − 1)) · ((-1↑(𝑁 − (0 − 1)))
· (𝐹‘(𝑋 + 0)))) + Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘))))) = (0 + Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))))) |
| 117 | | fzfid 12772 |
. . . . . . . 8
⊢ (𝜑 → ((0 + 1)...(𝑁 + 1)) ∈
Fin) |
| 118 | | olc 399 |
. . . . . . . . . 10
⊢ (𝑘 ∈ ((0 + 1)...(𝑁 + 1)) → (𝑘 = 0 ∨ 𝑘 ∈ ((0 + 1)...(𝑁 + 1)))) |
| 119 | | elfzp12 12419 |
. . . . . . . . . . . 12
⊢ ((𝑁 + 1) ∈
(ℤ≥‘0) → (𝑘 ∈ (0...(𝑁 + 1)) ↔ (𝑘 = 0 ∨ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))))) |
| 120 | 81, 119 | syl 17 |
. . . . . . . . . . 11
⊢ (𝜑 → (𝑘 ∈ (0...(𝑁 + 1)) ↔ (𝑘 = 0 ∨ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))))) |
| 121 | 120 | biimpar 502 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ (𝑘 = 0 ∨ 𝑘 ∈ ((0 + 1)...(𝑁 + 1)))) → 𝑘 ∈ (0...(𝑁 + 1))) |
| 122 | 118, 121 | sylan2 491 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))) → 𝑘 ∈ (0...(𝑁 + 1))) |
| 123 | 122, 72 | syldan 487 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))) → ((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) ∈ ℂ) |
| 124 | 117, 123 | fsumcl 14464 |
. . . . . . 7
⊢ (𝜑 → Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) ∈ ℂ) |
| 125 | 124 | addid2d 10237 |
. . . . . 6
⊢ (𝜑 → (0 + Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘))))) = Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘))))) |
| 126 | 90, 116, 125 | 3eqtrd 2660 |
. . . . 5
⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) = Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘))))) |
| 127 | | fwddifnp1.4 |
. . . . . . . . . . 11
⊢ (𝜑 → 𝑋 ∈ ℂ) |
| 128 | 127 | adantr 481 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))) → 𝑋 ∈ ℂ) |
| 129 | | 1cnd 10056 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))) → 1 ∈
ℂ) |
| 130 | | elfzelz 12342 |
. . . . . . . . . . . 12
⊢ (𝑘 ∈ ((0 + 1)...(𝑁 + 1)) → 𝑘 ∈ ℤ) |
| 131 | 130 | zcnd 11483 |
. . . . . . . . . . 11
⊢ (𝑘 ∈ ((0 + 1)...(𝑁 + 1)) → 𝑘 ∈ ℂ) |
| 132 | 131 | adantl 482 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))) → 𝑘 ∈ ℂ) |
| 133 | 128, 129,
132 | ppncand 10432 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))) → ((𝑋 + 1) + (𝑘 − 1)) = (𝑋 + 𝑘)) |
| 134 | 133 | fveq2d 6195 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))) → (𝐹‘((𝑋 + 1) + (𝑘 − 1))) = (𝐹‘(𝑋 + 𝑘))) |
| 135 | 134 | oveq2d 6666 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))) → ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘((𝑋 + 1) + (𝑘 − 1)))) = ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) |
| 136 | 135 | oveq2d 6666 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑘 ∈ ((0 + 1)...(𝑁 + 1))) → ((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘((𝑋 + 1) + (𝑘 − 1))))) = ((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘))))) |
| 137 | 136 | sumeq2dv 14433 |
. . . . 5
⊢ (𝜑 → Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘((𝑋 + 1) + (𝑘 − 1))))) = Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘))))) |
| 138 | | oveq2 6658 |
. . . . . . . 8
⊢ (𝑗 = 𝑘 → (𝑁C𝑗) = (𝑁C𝑘)) |
| 139 | | oveq2 6658 |
. . . . . . . . . 10
⊢ (𝑗 = 𝑘 → (𝑁 − 𝑗) = (𝑁 − 𝑘)) |
| 140 | 139 | oveq2d 6666 |
. . . . . . . . 9
⊢ (𝑗 = 𝑘 → (-1↑(𝑁 − 𝑗)) = (-1↑(𝑁 − 𝑘))) |
| 141 | | oveq2 6658 |
. . . . . . . . . 10
⊢ (𝑗 = 𝑘 → ((𝑋 + 1) + 𝑗) = ((𝑋 + 1) + 𝑘)) |
| 142 | 141 | fveq2d 6195 |
. . . . . . . . 9
⊢ (𝑗 = 𝑘 → (𝐹‘((𝑋 + 1) + 𝑗)) = (𝐹‘((𝑋 + 1) + 𝑘))) |
| 143 | 140, 142 | oveq12d 6668 |
. . . . . . . 8
⊢ (𝑗 = 𝑘 → ((-1↑(𝑁 − 𝑗)) · (𝐹‘((𝑋 + 1) + 𝑗))) = ((-1↑(𝑁 − 𝑘)) · (𝐹‘((𝑋 + 1) + 𝑘)))) |
| 144 | 138, 143 | oveq12d 6668 |
. . . . . . 7
⊢ (𝑗 = 𝑘 → ((𝑁C𝑗) · ((-1↑(𝑁 − 𝑗)) · (𝐹‘((𝑋 + 1) + 𝑗)))) = ((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘((𝑋 + 1) + 𝑘))))) |
| 145 | 144 | cbvsumv 14426 |
. . . . . 6
⊢
Σ𝑗 ∈
(0...𝑁)((𝑁C𝑗) · ((-1↑(𝑁 − 𝑗)) · (𝐹‘((𝑋 + 1) + 𝑗)))) = Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘((𝑋 + 1) + 𝑘)))) |
| 146 | | 1zzd 11408 |
. . . . . . 7
⊢ (𝜑 → 1 ∈
ℤ) |
| 147 | | 0zd 11389 |
. . . . . . 7
⊢ (𝜑 → 0 ∈
ℤ) |
| 148 | | elfzelz 12342 |
. . . . . . . . 9
⊢ (𝑗 ∈ (0...𝑁) → 𝑗 ∈ ℤ) |
| 149 | | bccl 13109 |
. . . . . . . . . 10
⊢ ((𝑁 ∈ ℕ0
∧ 𝑗 ∈ ℤ)
→ (𝑁C𝑗) ∈
ℕ0) |
| 150 | 149 | nn0cnd 11353 |
. . . . . . . . 9
⊢ ((𝑁 ∈ ℕ0
∧ 𝑗 ∈ ℤ)
→ (𝑁C𝑗) ∈
ℂ) |
| 151 | 1, 148, 150 | syl2an 494 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → (𝑁C𝑗) ∈ ℂ) |
| 152 | | zsubcl 11419 |
. . . . . . . . . . . 12
⊢ ((𝑁 ∈ ℤ ∧ 𝑗 ∈ ℤ) → (𝑁 − 𝑗) ∈ ℤ) |
| 153 | 47, 148, 152 | syl2an 494 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → (𝑁 − 𝑗) ∈ ℤ) |
| 154 | | m1expcl 12883 |
. . . . . . . . . . 11
⊢ ((𝑁 − 𝑗) ∈ ℤ → (-1↑(𝑁 − 𝑗)) ∈ ℤ) |
| 155 | 153, 154 | syl 17 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → (-1↑(𝑁 − 𝑗)) ∈ ℤ) |
| 156 | 155 | zcnd 11483 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → (-1↑(𝑁 − 𝑗)) ∈ ℂ) |
| 157 | 24 | adantr 481 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → 𝐹:𝐴⟶ℂ) |
| 158 | 127 | adantr 481 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → 𝑋 ∈ ℂ) |
| 159 | | 1cnd 10056 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → 1 ∈ ℂ) |
| 160 | 148 | zcnd 11483 |
. . . . . . . . . . . . . 14
⊢ (𝑗 ∈ (0...𝑁) → 𝑗 ∈ ℂ) |
| 161 | 160 | adantl 482 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → 𝑗 ∈ ℂ) |
| 162 | 158, 159,
161 | addassd 10062 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → ((𝑋 + 1) + 𝑗) = (𝑋 + (1 + 𝑗))) |
| 163 | 159, 161 | addcomd 10238 |
. . . . . . . . . . . . 13
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → (1 + 𝑗) = (𝑗 + 1)) |
| 164 | 163 | oveq2d 6666 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → (𝑋 + (1 + 𝑗)) = (𝑋 + (𝑗 + 1))) |
| 165 | 162, 164 | eqtrd 2656 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → ((𝑋 + 1) + 𝑗) = (𝑋 + (𝑗 + 1))) |
| 166 | | fzp1elp1 12394 |
. . . . . . . . . . . 12
⊢ (𝑗 ∈ (0...𝑁) → (𝑗 + 1) ∈ (0...(𝑁 + 1))) |
| 167 | | oveq2 6658 |
. . . . . . . . . . . . . . . 16
⊢ (𝑘 = (𝑗 + 1) → (𝑋 + 𝑘) = (𝑋 + (𝑗 + 1))) |
| 168 | 167 | eleq1d 2686 |
. . . . . . . . . . . . . . 15
⊢ (𝑘 = (𝑗 + 1) → ((𝑋 + 𝑘) ∈ 𝐴 ↔ (𝑋 + (𝑗 + 1)) ∈ 𝐴)) |
| 169 | 168 | rspccv 3306 |
. . . . . . . . . . . . . 14
⊢
(∀𝑘 ∈
(0...(𝑁 + 1))(𝑋 + 𝑘) ∈ 𝐴 → ((𝑗 + 1) ∈ (0...(𝑁 + 1)) → (𝑋 + (𝑗 + 1)) ∈ 𝐴)) |
| 170 | 108, 169 | syl 17 |
. . . . . . . . . . . . 13
⊢ (𝜑 → ((𝑗 + 1) ∈ (0...(𝑁 + 1)) → (𝑋 + (𝑗 + 1)) ∈ 𝐴)) |
| 171 | 170 | imp 445 |
. . . . . . . . . . . 12
⊢ ((𝜑 ∧ (𝑗 + 1) ∈ (0...(𝑁 + 1))) → (𝑋 + (𝑗 + 1)) ∈ 𝐴) |
| 172 | 166, 171 | sylan2 491 |
. . . . . . . . . . 11
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → (𝑋 + (𝑗 + 1)) ∈ 𝐴) |
| 173 | 165, 172 | eqeltrd 2701 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → ((𝑋 + 1) + 𝑗) ∈ 𝐴) |
| 174 | 157, 173 | ffvelrnd 6360 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → (𝐹‘((𝑋 + 1) + 𝑗)) ∈ ℂ) |
| 175 | 156, 174 | mulcld 10060 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → ((-1↑(𝑁 − 𝑗)) · (𝐹‘((𝑋 + 1) + 𝑗))) ∈ ℂ) |
| 176 | 151, 175 | mulcld 10060 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑗 ∈ (0...𝑁)) → ((𝑁C𝑗) · ((-1↑(𝑁 − 𝑗)) · (𝐹‘((𝑋 + 1) + 𝑗)))) ∈ ℂ) |
| 177 | | oveq2 6658 |
. . . . . . . 8
⊢ (𝑗 = (𝑘 − 1) → (𝑁C𝑗) = (𝑁C(𝑘 − 1))) |
| 178 | | oveq2 6658 |
. . . . . . . . . 10
⊢ (𝑗 = (𝑘 − 1) → (𝑁 − 𝑗) = (𝑁 − (𝑘 − 1))) |
| 179 | 178 | oveq2d 6666 |
. . . . . . . . 9
⊢ (𝑗 = (𝑘 − 1) → (-1↑(𝑁 − 𝑗)) = (-1↑(𝑁 − (𝑘 − 1)))) |
| 180 | | oveq2 6658 |
. . . . . . . . . 10
⊢ (𝑗 = (𝑘 − 1) → ((𝑋 + 1) + 𝑗) = ((𝑋 + 1) + (𝑘 − 1))) |
| 181 | 180 | fveq2d 6195 |
. . . . . . . . 9
⊢ (𝑗 = (𝑘 − 1) → (𝐹‘((𝑋 + 1) + 𝑗)) = (𝐹‘((𝑋 + 1) + (𝑘 − 1)))) |
| 182 | 179, 181 | oveq12d 6668 |
. . . . . . . 8
⊢ (𝑗 = (𝑘 − 1) → ((-1↑(𝑁 − 𝑗)) · (𝐹‘((𝑋 + 1) + 𝑗))) = ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘((𝑋 + 1) + (𝑘 − 1))))) |
| 183 | 177, 182 | oveq12d 6668 |
. . . . . . 7
⊢ (𝑗 = (𝑘 − 1) → ((𝑁C𝑗) · ((-1↑(𝑁 − 𝑗)) · (𝐹‘((𝑋 + 1) + 𝑗)))) = ((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘((𝑋 + 1) + (𝑘 − 1)))))) |
| 184 | 146, 147,
47, 176, 183 | fsumshft 14512 |
. . . . . 6
⊢ (𝜑 → Σ𝑗 ∈ (0...𝑁)((𝑁C𝑗) · ((-1↑(𝑁 − 𝑗)) · (𝐹‘((𝑋 + 1) + 𝑗)))) = Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘((𝑋 + 1) + (𝑘 − 1)))))) |
| 185 | 145, 184 | syl5reqr 2671 |
. . . . 5
⊢ (𝜑 → Σ𝑘 ∈ ((0 + 1)...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘((𝑋 + 1) + (𝑘 − 1))))) = Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘((𝑋 + 1) + 𝑘))))) |
| 186 | 126, 137,
185 | 3eqtr2d 2662 |
. . . 4
⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) = Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘((𝑋 + 1) + 𝑘))))) |
| 187 | 1, 80 | syl6eleq 2711 |
. . . . . 6
⊢ (𝜑 → 𝑁 ∈
(ℤ≥‘0)) |
| 188 | | oveq2 6658 |
. . . . . . 7
⊢ (𝑘 = (𝑁 + 1) → (𝑁C𝑘) = (𝑁C(𝑁 + 1))) |
| 189 | | oveq2 6658 |
. . . . . . . . 9
⊢ (𝑘 = (𝑁 + 1) → (𝑁 − 𝑘) = (𝑁 − (𝑁 + 1))) |
| 190 | 189 | oveq2d 6666 |
. . . . . . . 8
⊢ (𝑘 = (𝑁 + 1) → (-1↑(𝑁 − 𝑘)) = (-1↑(𝑁 − (𝑁 + 1)))) |
| 191 | | oveq2 6658 |
. . . . . . . . 9
⊢ (𝑘 = (𝑁 + 1) → (𝑋 + 𝑘) = (𝑋 + (𝑁 + 1))) |
| 192 | 191 | fveq2d 6195 |
. . . . . . . 8
⊢ (𝑘 = (𝑁 + 1) → (𝐹‘(𝑋 + 𝑘)) = (𝐹‘(𝑋 + (𝑁 + 1)))) |
| 193 | 190, 192 | oveq12d 6668 |
. . . . . . 7
⊢ (𝑘 = (𝑁 + 1) → ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))) = ((-1↑(𝑁 − (𝑁 + 1))) · (𝐹‘(𝑋 + (𝑁 + 1))))) |
| 194 | 188, 193 | oveq12d 6668 |
. . . . . 6
⊢ (𝑘 = (𝑁 + 1) → ((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = ((𝑁C(𝑁 + 1)) · ((-1↑(𝑁 − (𝑁 + 1))) · (𝐹‘(𝑋 + (𝑁 + 1)))))) |
| 195 | 187, 73, 194 | fsump1 14487 |
. . . . 5
⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 + 1))((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = (Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) + ((𝑁C(𝑁 + 1)) · ((-1↑(𝑁 − (𝑁 + 1))) · (𝐹‘(𝑋 + (𝑁 + 1))))))) |
| 196 | | bcval 13091 |
. . . . . . . . . 10
⊢ ((𝑁 ∈ ℕ0
∧ (𝑁 + 1) ∈
ℤ) → (𝑁C(𝑁 + 1)) = if((𝑁 + 1) ∈ (0...𝑁), ((!‘𝑁) / ((!‘(𝑁 − (𝑁 + 1))) · (!‘(𝑁 + 1)))), 0)) |
| 197 | 1, 18, 196 | syl2anc 693 |
. . . . . . . . 9
⊢ (𝜑 → (𝑁C(𝑁 + 1)) = if((𝑁 + 1) ∈ (0...𝑁), ((!‘𝑁) / ((!‘(𝑁 − (𝑁 + 1))) · (!‘(𝑁 + 1)))), 0)) |
| 198 | | fzp1nel 12424 |
. . . . . . . . . 10
⊢ ¬
(𝑁 + 1) ∈ (0...𝑁) |
| 199 | 198 | iffalsei 4096 |
. . . . . . . . 9
⊢ if((𝑁 + 1) ∈ (0...𝑁), ((!‘𝑁) / ((!‘(𝑁 − (𝑁 + 1))) · (!‘(𝑁 + 1)))), 0) = 0 |
| 200 | 197, 199 | syl6eq 2672 |
. . . . . . . 8
⊢ (𝜑 → (𝑁C(𝑁 + 1)) = 0) |
| 201 | 200 | oveq1d 6665 |
. . . . . . 7
⊢ (𝜑 → ((𝑁C(𝑁 + 1)) · ((-1↑(𝑁 − (𝑁 + 1))) · (𝐹‘(𝑋 + (𝑁 + 1))))) = (0 · ((-1↑(𝑁 − (𝑁 + 1))) · (𝐹‘(𝑋 + (𝑁 + 1)))))) |
| 202 | 47, 18 | zsubcld 11487 |
. . . . . . . . . 10
⊢ (𝜑 → (𝑁 − (𝑁 + 1)) ∈ ℤ) |
| 203 | | m1expcl 12883 |
. . . . . . . . . . 11
⊢ ((𝑁 − (𝑁 + 1)) ∈ ℤ → (-1↑(𝑁 − (𝑁 + 1))) ∈ ℤ) |
| 204 | 203 | zcnd 11483 |
. . . . . . . . . 10
⊢ ((𝑁 − (𝑁 + 1)) ∈ ℤ → (-1↑(𝑁 − (𝑁 + 1))) ∈ ℂ) |
| 205 | 202, 204 | syl 17 |
. . . . . . . . 9
⊢ (𝜑 → (-1↑(𝑁 − (𝑁 + 1))) ∈ ℂ) |
| 206 | | eluzfz2 12349 |
. . . . . . . . . . . 12
⊢ ((𝑁 + 1) ∈
(ℤ≥‘0) → (𝑁 + 1) ∈ (0...(𝑁 + 1))) |
| 207 | 81, 206 | syl 17 |
. . . . . . . . . . 11
⊢ (𝜑 → (𝑁 + 1) ∈ (0...(𝑁 + 1))) |
| 208 | 191 | eleq1d 2686 |
. . . . . . . . . . . 12
⊢ (𝑘 = (𝑁 + 1) → ((𝑋 + 𝑘) ∈ 𝐴 ↔ (𝑋 + (𝑁 + 1)) ∈ 𝐴)) |
| 209 | 208 | rspcv 3305 |
. . . . . . . . . . 11
⊢ ((𝑁 + 1) ∈ (0...(𝑁 + 1)) → (∀𝑘 ∈ (0...(𝑁 + 1))(𝑋 + 𝑘) ∈ 𝐴 → (𝑋 + (𝑁 + 1)) ∈ 𝐴)) |
| 210 | 207, 108,
209 | sylc 65 |
. . . . . . . . . 10
⊢ (𝜑 → (𝑋 + (𝑁 + 1)) ∈ 𝐴) |
| 211 | 24, 210 | ffvelrnd 6360 |
. . . . . . . . 9
⊢ (𝜑 → (𝐹‘(𝑋 + (𝑁 + 1))) ∈ ℂ) |
| 212 | 205, 211 | mulcld 10060 |
. . . . . . . 8
⊢ (𝜑 → ((-1↑(𝑁 − (𝑁 + 1))) · (𝐹‘(𝑋 + (𝑁 + 1)))) ∈ ℂ) |
| 213 | 212 | mul02d 10234 |
. . . . . . 7
⊢ (𝜑 → (0 ·
((-1↑(𝑁 − (𝑁 + 1))) · (𝐹‘(𝑋 + (𝑁 + 1))))) = 0) |
| 214 | 201, 213 | eqtrd 2656 |
. . . . . 6
⊢ (𝜑 → ((𝑁C(𝑁 + 1)) · ((-1↑(𝑁 − (𝑁 + 1))) · (𝐹‘(𝑋 + (𝑁 + 1))))) = 0) |
| 215 | 214 | oveq2d 6666 |
. . . . 5
⊢ (𝜑 → (Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) + ((𝑁C(𝑁 + 1)) · ((-1↑(𝑁 − (𝑁 + 1))) · (𝐹‘(𝑋 + (𝑁 + 1)))))) = (Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) + 0)) |
| 216 | | fzfid 12772 |
. . . . . . 7
⊢ (𝜑 → (0...𝑁) ∈ Fin) |
| 217 | | fzelp1 12393 |
. . . . . . . 8
⊢ (𝑘 ∈ (0...𝑁) → 𝑘 ∈ (0...(𝑁 + 1))) |
| 218 | 217, 73 | sylan2 491 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → ((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) ∈ ℂ) |
| 219 | 216, 218 | fsumcl 14464 |
. . . . . 6
⊢ (𝜑 → Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) ∈ ℂ) |
| 220 | 219 | addid1d 10236 |
. . . . 5
⊢ (𝜑 → (Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) + 0) = Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) |
| 221 | 195, 215,
220 | 3eqtrd 2660 |
. . . 4
⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 + 1))((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) |
| 222 | 186, 221 | oveq12d 6668 |
. . 3
⊢ (𝜑 → (Σ𝑘 ∈ (0...(𝑁 + 1))((𝑁C(𝑘 − 1)) · ((-1↑(𝑁 − (𝑘 − 1))) · (𝐹‘(𝑋 + 𝑘)))) − Σ𝑘 ∈ (0...(𝑁 + 1))((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) = (Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘((𝑋 + 1) + 𝑘)))) − Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 223 | 77, 79, 222 | 3eqtrd 2660 |
. 2
⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 + 1))(((𝑁 + 1)C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))) = (Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘((𝑋 + 1) + 𝑘)))) − Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 224 | | fwddifnp1.2 |
. . 3
⊢ (𝜑 → 𝐴 ⊆ ℂ) |
| 225 | 17, 224, 24, 127, 26 | fwddifnval 32270 |
. 2
⊢ (𝜑 → (((𝑁 + 1) △n 𝐹)‘𝑋) = Σ𝑘 ∈ (0...(𝑁 + 1))(((𝑁 + 1)C𝑘) · ((-1↑((𝑁 + 1) − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) |
| 226 | | peano2cn 10208 |
. . . . 5
⊢ (𝑋 ∈ ℂ → (𝑋 + 1) ∈
ℂ) |
| 227 | 127, 226 | syl 17 |
. . . 4
⊢ (𝜑 → (𝑋 + 1) ∈ ℂ) |
| 228 | 127 | adantr 481 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝑋 ∈ ℂ) |
| 229 | | 1cnd 10056 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 1 ∈ ℂ) |
| 230 | | elfzelz 12342 |
. . . . . . . . 9
⊢ (𝑘 ∈ (0...𝑁) → 𝑘 ∈ ℤ) |
| 231 | 230 | zcnd 11483 |
. . . . . . . 8
⊢ (𝑘 ∈ (0...𝑁) → 𝑘 ∈ ℂ) |
| 232 | 231 | adantl 482 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝑘 ∈ ℂ) |
| 233 | 228, 229,
232 | addassd 10062 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → ((𝑋 + 1) + 𝑘) = (𝑋 + (1 + 𝑘))) |
| 234 | 229, 232 | addcomd 10238 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → (1 + 𝑘) = (𝑘 + 1)) |
| 235 | 234 | oveq2d 6666 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → (𝑋 + (1 + 𝑘)) = (𝑋 + (𝑘 + 1))) |
| 236 | 233, 235 | eqtrd 2656 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → ((𝑋 + 1) + 𝑘) = (𝑋 + (𝑘 + 1))) |
| 237 | | fzp1elp1 12394 |
. . . . . 6
⊢ (𝑘 ∈ (0...𝑁) → (𝑘 + 1) ∈ (0...(𝑁 + 1))) |
| 238 | | oveq1 6657 |
. . . . . . . . . 10
⊢ (𝑗 = 𝑘 → (𝑗 + 1) = (𝑘 + 1)) |
| 239 | 238 | eleq1d 2686 |
. . . . . . . . 9
⊢ (𝑗 = 𝑘 → ((𝑗 + 1) ∈ (0...(𝑁 + 1)) ↔ (𝑘 + 1) ∈ (0...(𝑁 + 1)))) |
| 240 | 239 | anbi2d 740 |
. . . . . . . 8
⊢ (𝑗 = 𝑘 → ((𝜑 ∧ (𝑗 + 1) ∈ (0...(𝑁 + 1))) ↔ (𝜑 ∧ (𝑘 + 1) ∈ (0...(𝑁 + 1))))) |
| 241 | 238 | oveq2d 6666 |
. . . . . . . . 9
⊢ (𝑗 = 𝑘 → (𝑋 + (𝑗 + 1)) = (𝑋 + (𝑘 + 1))) |
| 242 | 241 | eleq1d 2686 |
. . . . . . . 8
⊢ (𝑗 = 𝑘 → ((𝑋 + (𝑗 + 1)) ∈ 𝐴 ↔ (𝑋 + (𝑘 + 1)) ∈ 𝐴)) |
| 243 | 240, 242 | imbi12d 334 |
. . . . . . 7
⊢ (𝑗 = 𝑘 → (((𝜑 ∧ (𝑗 + 1) ∈ (0...(𝑁 + 1))) → (𝑋 + (𝑗 + 1)) ∈ 𝐴) ↔ ((𝜑 ∧ (𝑘 + 1) ∈ (0...(𝑁 + 1))) → (𝑋 + (𝑘 + 1)) ∈ 𝐴))) |
| 244 | 243, 171 | chvarv 2263 |
. . . . . 6
⊢ ((𝜑 ∧ (𝑘 + 1) ∈ (0...(𝑁 + 1))) → (𝑋 + (𝑘 + 1)) ∈ 𝐴) |
| 245 | 237, 244 | sylan2 491 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → (𝑋 + (𝑘 + 1)) ∈ 𝐴) |
| 246 | 236, 245 | eqeltrd 2701 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → ((𝑋 + 1) + 𝑘) ∈ 𝐴) |
| 247 | 1, 224, 24, 227, 246 | fwddifnval 32270 |
. . 3
⊢ (𝜑 → ((𝑁 △n 𝐹)‘(𝑋 + 1)) = Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘((𝑋 + 1) + 𝑘))))) |
| 248 | 217, 26 | sylan2 491 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → (𝑋 + 𝑘) ∈ 𝐴) |
| 249 | 1, 224, 24, 127, 248 | fwddifnval 32270 |
. . 3
⊢ (𝜑 → ((𝑁 △n 𝐹)‘𝑋) = Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘))))) |
| 250 | 247, 249 | oveq12d 6668 |
. 2
⊢ (𝜑 → (((𝑁 △n 𝐹)‘(𝑋 + 1)) − ((𝑁 △n 𝐹)‘𝑋)) = (Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘((𝑋 + 1) + 𝑘)))) − Σ𝑘 ∈ (0...𝑁)((𝑁C𝑘) · ((-1↑(𝑁 − 𝑘)) · (𝐹‘(𝑋 + 𝑘)))))) |
| 251 | 223, 225,
250 | 3eqtr4d 2666 |
1
⊢ (𝜑 → (((𝑁 + 1) △n 𝐹)‘𝑋) = (((𝑁 △n 𝐹)‘(𝑋 + 1)) − ((𝑁 △n 𝐹)‘𝑋))) |