basellem2 - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > basellem2		Structured version Visualization version GIF version

Theorem basellem2 27020

Description: Lemma for basel 27028. Show that 𝑃 is a polynomial of degree 𝑀, and compute its coefficient function. (Contributed by Mario Carneiro, 30-Jul-2014.)

**Hypotheses**
Ref	Expression
basel.n	⊢ 𝑁 = ((2 · 𝑀) + 1)
basel.p	⊢ 𝑃 = (𝑡 ∈ ℂ ↦ Σ𝑗 ∈ (0...𝑀)(((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) · (𝑡↑𝑗)))

**Assertion**
Ref	Expression
basellem2	⊢ (𝑀 ∈ ℕ → (𝑃 ∈ (Poly‘ℂ) ∧ (deg‘𝑃) = 𝑀 ∧ (coeff‘𝑃) = (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))))

Distinct variable groups: 𝑡,𝑗,𝑛,𝑀 𝑗,𝑁,𝑛,𝑡 𝑃,𝑛 Allowed substitution hints: 𝑃(𝑡,𝑗)

**Proof of Theorem basellem2**
Step	Hyp	Ref	Expression
1		basel.p	. . 3 ⊢ 𝑃 = (𝑡 ∈ ℂ ↦ Σ𝑗 ∈ (0...𝑀)(((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) · (𝑡↑𝑗)))
2		ssidd 3954	. . . 4 ⊢ (𝑀 ∈ ℕ → ℂ ⊆ ℂ)
3		nnnn0 12395	. . . 4 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℕ₀)
4		elfznn0 13522	. . . . . . 7 ⊢ (𝑗 ∈ (0...𝑀) → 𝑗 ∈ ℕ₀)
5		oveq2 7360	. . . . . . . . . 10 ⊢ (𝑛 = 𝑗 → (2 · 𝑛) = (2 · 𝑗))
6	5	oveq2d 7368	. . . . . . . . 9 ⊢ (𝑛 = 𝑗 → (𝑁C(2 · 𝑛)) = (𝑁C(2 · 𝑗)))
7		oveq2 7360	. . . . . . . . . 10 ⊢ (𝑛 = 𝑗 → (𝑀 − 𝑛) = (𝑀 − 𝑗))
8	7	oveq2d 7368	. . . . . . . . 9 ⊢ (𝑛 = 𝑗 → (-1↑(𝑀 − 𝑛)) = (-1↑(𝑀 − 𝑗)))
9	6, 8	oveq12d 7370	. . . . . . . 8 ⊢ (𝑛 = 𝑗 → ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))) = ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))))
10		eqid 2733	. . . . . . . 8 ⊢ (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))) = (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))
11		ovex 7385	. . . . . . . 8 ⊢ ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) ∈ V
12	9, 10, 11	fvmpt 6935	. . . . . . 7 ⊢ (𝑗 ∈ ℕ₀ → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) = ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))))
13	4, 12	syl 17	. . . . . 6 ⊢ (𝑗 ∈ (0...𝑀) → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) = ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))))
14	13	adantl 481	. . . . 5 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ (0...𝑀)) → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) = ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))))
15		basel.n	. . . . . . . . . . . 12 ⊢ 𝑁 = ((2 · 𝑀) + 1)
16		2nn 12205	. . . . . . . . . . . . . 14 ⊢ 2 ∈ ℕ
17		nnmulcl 12156	. . . . . . . . . . . . . 14 ⊢ ((2 ∈ ℕ ∧ 𝑀 ∈ ℕ) → (2 · 𝑀) ∈ ℕ)
18	16, 17	mpan 690	. . . . . . . . . . . . 13 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ∈ ℕ)
19	18	peano2nnd 12149	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ ℕ → ((2 · 𝑀) + 1) ∈ ℕ)
20	15, 19	eqeltrid 2837	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℕ → 𝑁 ∈ ℕ)
21	20	nnnn0d 12449	. . . . . . . . . 10 ⊢ (𝑀 ∈ ℕ → 𝑁 ∈ ℕ₀)
22		2z 12510	. . . . . . . . . . 11 ⊢ 2 ∈ ℤ
23		nn0z 12499	. . . . . . . . . . 11 ⊢ (𝑛 ∈ ℕ₀ → 𝑛 ∈ ℤ)
24		zmulcl 12527	. . . . . . . . . . 11 ⊢ ((2 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (2 · 𝑛) ∈ ℤ)
25	22, 23, 24	sylancr 587	. . . . . . . . . 10 ⊢ (𝑛 ∈ ℕ₀ → (2 · 𝑛) ∈ ℤ)
26		bccl 14231	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ₀ ∧ (2 · 𝑛) ∈ ℤ) → (𝑁C(2 · 𝑛)) ∈ ℕ₀)
27	21, 25, 26	syl2an 596	. . . . . . . . 9 ⊢ ((𝑀 ∈ ℕ ∧ 𝑛 ∈ ℕ₀) → (𝑁C(2 · 𝑛)) ∈ ℕ₀)
28	27	nn0cnd 12451	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ ∧ 𝑛 ∈ ℕ₀) → (𝑁C(2 · 𝑛)) ∈ ℂ)
29		neg1cn 12117	. . . . . . . . 9 ⊢ -1 ∈ ℂ
30		neg1ne0 12119	. . . . . . . . 9 ⊢ -1 ≠ 0
31		nnz 12496	. . . . . . . . . 10 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℤ)
32		zsubcl 12520	. . . . . . . . . 10 ⊢ ((𝑀 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (𝑀 − 𝑛) ∈ ℤ)
33	31, 23, 32	syl2an 596	. . . . . . . . 9 ⊢ ((𝑀 ∈ ℕ ∧ 𝑛 ∈ ℕ₀) → (𝑀 − 𝑛) ∈ ℤ)
34		expclz 13993	. . . . . . . . 9 ⊢ ((-1 ∈ ℂ ∧ -1 ≠ 0 ∧ (𝑀 − 𝑛) ∈ ℤ) → (-1↑(𝑀 − 𝑛)) ∈ ℂ)
35	29, 30, 33, 34	mp3an12i 1467	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ ∧ 𝑛 ∈ ℕ₀) → (-1↑(𝑀 − 𝑛)) ∈ ℂ)
36	28, 35	mulcld 11139	. . . . . . 7 ⊢ ((𝑀 ∈ ℕ ∧ 𝑛 ∈ ℕ₀) → ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))) ∈ ℂ)
37	36	fmpttd 7054	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))):ℕ₀⟶ℂ)
38		ffvelcdm 7020	. . . . . 6 ⊢ (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))):ℕ₀⟶ℂ ∧ 𝑗 ∈ ℕ₀) → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) ∈ ℂ)
39	37, 4, 38	syl2an 596	. . . . 5 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ (0...𝑀)) → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) ∈ ℂ)
40	14, 39	eqeltrrd 2834	. . . 4 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ (0...𝑀)) → ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) ∈ ℂ)
41	2, 3, 40	elplyd 26135	. . 3 ⊢ (𝑀 ∈ ℕ → (𝑡 ∈ ℂ ↦ Σ𝑗 ∈ (0...𝑀)(((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) · (𝑡↑𝑗))) ∈ (Poly‘ℂ))
42	1, 41	eqeltrid 2837	. 2 ⊢ (𝑀 ∈ ℕ → 𝑃 ∈ (Poly‘ℂ))
43		nnre 12139	. . . . . . . 8 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℝ)
44		nn0re 12397	. . . . . . . 8 ⊢ (𝑗 ∈ ℕ₀ → 𝑗 ∈ ℝ)
45		ltnle 11199	. . . . . . . 8 ⊢ ((𝑀 ∈ ℝ ∧ 𝑗 ∈ ℝ) → (𝑀 < 𝑗 ↔ ¬ 𝑗 ≤ 𝑀))
46	43, 44, 45	syl2an 596	. . . . . . 7 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) → (𝑀 < 𝑗 ↔ ¬ 𝑗 ≤ 𝑀))
47	12	ad2antlr 727	. . . . . . . . 9 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) = ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))))
48	21	ad2antrr 726	. . . . . . . . . . 11 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 𝑁 ∈ ℕ₀)
49		nn0z 12499	. . . . . . . . . . . . 13 ⊢ (𝑗 ∈ ℕ₀ → 𝑗 ∈ ℤ)
50	49	ad2antlr 727	. . . . . . . . . . . 12 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 𝑗 ∈ ℤ)
51		zmulcl 12527	. . . . . . . . . . . 12 ⊢ ((2 ∈ ℤ ∧ 𝑗 ∈ ℤ) → (2 · 𝑗) ∈ ℤ)
52	22, 50, 51	sylancr 587	. . . . . . . . . . 11 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · 𝑗) ∈ ℤ)
53		ax-1cn 11071	. . . . . . . . . . . . . . . . 17 ⊢ 1 ∈ ℂ
54	53	2timesi 12265	. . . . . . . . . . . . . . . 16 ⊢ (2 · 1) = (1 + 1)
55	54	oveq2i 7363	. . . . . . . . . . . . . . 15 ⊢ ((2 · 𝑀) + (2 · 1)) = ((2 · 𝑀) + (1 + 1))
56		2cnd 12210	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 2 ∈ ℂ)
57		nncn 12140	. . . . . . . . . . . . . . . . 17 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℂ)
58	57	ad2antrr 726	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 𝑀 ∈ ℂ)
59	53	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 1 ∈ ℂ)
60	56, 58, 59	adddid 11143	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · (𝑀 + 1)) = ((2 · 𝑀) + (2 · 1)))
61	15	oveq1i 7362	. . . . . . . . . . . . . . . 16 ⊢ (𝑁 + 1) = (((2 · 𝑀) + 1) + 1)
62	18	ad2antrr 726	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · 𝑀) ∈ ℕ)
63	62	nncnd 12148	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · 𝑀) ∈ ℂ)
64	63, 59, 59	addassd 11141	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (((2 · 𝑀) + 1) + 1) = ((2 · 𝑀) + (1 + 1)))
65	61, 64	eqtrid 2780	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (𝑁 + 1) = ((2 · 𝑀) + (1 + 1)))
66	55, 60, 65	3eqtr4a 2794	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · (𝑀 + 1)) = (𝑁 + 1))
67		zltp1le 12528	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑀 ∈ ℤ ∧ 𝑗 ∈ ℤ) → (𝑀 < 𝑗 ↔ (𝑀 + 1) ≤ 𝑗))
68	31, 49, 67	syl2an 596	. . . . . . . . . . . . . . . 16 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) → (𝑀 < 𝑗 ↔ (𝑀 + 1) ≤ 𝑗))
69	68	biimpa 476	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (𝑀 + 1) ≤ 𝑗)
70	43	ad2antrr 726	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 𝑀 ∈ ℝ)
71		peano2re 11293	. . . . . . . . . . . . . . . . 17 ⊢ (𝑀 ∈ ℝ → (𝑀 + 1) ∈ ℝ)
72	70, 71	syl 17	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (𝑀 + 1) ∈ ℝ)
73	44	ad2antlr 727	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 𝑗 ∈ ℝ)
74		2re 12206	. . . . . . . . . . . . . . . . . 18 ⊢ 2 ∈ ℝ
75		2pos 12235	. . . . . . . . . . . . . . . . . 18 ⊢ 0 < 2
76	74, 75	pm3.2i 470	. . . . . . . . . . . . . . . . 17 ⊢ (2 ∈ ℝ ∧ 0 < 2)
77	76	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 ∈ ℝ ∧ 0 < 2))
78		lemul2 11981	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 + 1) ∈ ℝ ∧ 𝑗 ∈ ℝ ∧ (2 ∈ ℝ ∧ 0 < 2)) → ((𝑀 + 1) ≤ 𝑗 ↔ (2 · (𝑀 + 1)) ≤ (2 · 𝑗)))
79	72, 73, 77, 78	syl3anc 1373	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → ((𝑀 + 1) ≤ 𝑗 ↔ (2 · (𝑀 + 1)) ≤ (2 · 𝑗)))
80	69, 79	mpbid 232	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · (𝑀 + 1)) ≤ (2 · 𝑗))
81	66, 80	eqbrtrrd 5117	. . . . . . . . . . . . 13 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (𝑁 + 1) ≤ (2 · 𝑗))
82	20	nnzd 12501	. . . . . . . . . . . . . . 15 ⊢ (𝑀 ∈ ℕ → 𝑁 ∈ ℤ)
83	82	ad2antrr 726	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 𝑁 ∈ ℤ)
84		zltp1le 12528	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℤ ∧ (2 · 𝑗) ∈ ℤ) → (𝑁 < (2 · 𝑗) ↔ (𝑁 + 1) ≤ (2 · 𝑗)))
85	83, 52, 84	syl2anc 584	. . . . . . . . . . . . 13 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (𝑁 < (2 · 𝑗) ↔ (𝑁 + 1) ≤ (2 · 𝑗)))
86	81, 85	mpbird 257	. . . . . . . . . . . 12 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 𝑁 < (2 · 𝑗))
87	86	olcd 874	. . . . . . . . . . 11 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → ((2 · 𝑗) < 0 ∨ 𝑁 < (2 · 𝑗)))
88		bcval4 14216	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ₀ ∧ (2 · 𝑗) ∈ ℤ ∧ ((2 · 𝑗) < 0 ∨ 𝑁 < (2 · 𝑗))) → (𝑁C(2 · 𝑗)) = 0)
89	48, 52, 87, 88	syl3anc 1373	. . . . . . . . . 10 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (𝑁C(2 · 𝑗)) = 0)
90	89	oveq1d 7367	. . . . . . . . 9 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) = (0 · (-1↑(𝑀 − 𝑗))))
91		zsubcl 12520	. . . . . . . . . . . . 13 ⊢ ((𝑀 ∈ ℤ ∧ 𝑗 ∈ ℤ) → (𝑀 − 𝑗) ∈ ℤ)
92	31, 49, 91	syl2an 596	. . . . . . . . . . . 12 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) → (𝑀 − 𝑗) ∈ ℤ)
93		expclz 13993	. . . . . . . . . . . 12 ⊢ ((-1 ∈ ℂ ∧ -1 ≠ 0 ∧ (𝑀 − 𝑗) ∈ ℤ) → (-1↑(𝑀 − 𝑗)) ∈ ℂ)
94	29, 30, 92, 93	mp3an12i 1467	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) → (-1↑(𝑀 − 𝑗)) ∈ ℂ)
95	94	adantr 480	. . . . . . . . . 10 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (-1↑(𝑀 − 𝑗)) ∈ ℂ)
96	95	mul02d 11318	. . . . . . . . 9 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (0 · (-1↑(𝑀 − 𝑗))) = 0)
97	47, 90, 96	3eqtrd 2772	. . . . . . . 8 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) = 0)
98	97	ex 412	. . . . . . 7 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) → (𝑀 < 𝑗 → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) = 0))
99	46, 98	sylbird 260	. . . . . 6 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) → (¬ 𝑗 ≤ 𝑀 → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) = 0))
100	99	necon1ad 2946	. . . . 5 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) → (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) ≠ 0 → 𝑗 ≤ 𝑀))
101	100	ralrimiva 3125	. . . 4 ⊢ (𝑀 ∈ ℕ → ∀𝑗 ∈ ℕ₀ (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) ≠ 0 → 𝑗 ≤ 𝑀))
102		plyco0 26125	. . . . 5 ⊢ ((𝑀 ∈ ℕ₀ ∧ (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))):ℕ₀⟶ℂ) → (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))) “ (ℤ_≥‘(𝑀 + 1))) = {0} ↔ ∀𝑗 ∈ ℕ₀ (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) ≠ 0 → 𝑗 ≤ 𝑀)))
103	3, 37, 102	syl2anc 584	. . . 4 ⊢ (𝑀 ∈ ℕ → (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))) “ (ℤ_≥‘(𝑀 + 1))) = {0} ↔ ∀𝑗 ∈ ℕ₀ (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) ≠ 0 → 𝑗 ≤ 𝑀)))
104	101, 103	mpbird 257	. . 3 ⊢ (𝑀 ∈ ℕ → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))) “ (ℤ_≥‘(𝑀 + 1))) = {0})
105	13	oveq1d 7367	. . . . . . 7 ⊢ (𝑗 ∈ (0...𝑀) → (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) · (𝑡↑𝑗)) = (((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) · (𝑡↑𝑗)))
106	105	sumeq2i 15607	. . . . . 6 ⊢ Σ𝑗 ∈ (0...𝑀)(((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) · (𝑡↑𝑗)) = Σ𝑗 ∈ (0...𝑀)(((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) · (𝑡↑𝑗))
107	106	mpteq2i 5189	. . . . 5 ⊢ (𝑡 ∈ ℂ ↦ Σ𝑗 ∈ (0...𝑀)(((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) · (𝑡↑𝑗))) = (𝑡 ∈ ℂ ↦ Σ𝑗 ∈ (0...𝑀)(((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) · (𝑡↑𝑗)))
108	1, 107	eqtr4i 2759	. . . 4 ⊢ 𝑃 = (𝑡 ∈ ℂ ↦ Σ𝑗 ∈ (0...𝑀)(((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) · (𝑡↑𝑗)))
109	108	a1i 11	. . 3 ⊢ (𝑀 ∈ ℕ → 𝑃 = (𝑡 ∈ ℂ ↦ Σ𝑗 ∈ (0...𝑀)(((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) · (𝑡↑𝑗))))
110		oveq2 7360	. . . . . . . . 9 ⊢ (𝑛 = 𝑀 → (2 · 𝑛) = (2 · 𝑀))
111	110	oveq2d 7368	. . . . . . . 8 ⊢ (𝑛 = 𝑀 → (𝑁C(2 · 𝑛)) = (𝑁C(2 · 𝑀)))
112		oveq2 7360	. . . . . . . . 9 ⊢ (𝑛 = 𝑀 → (𝑀 − 𝑛) = (𝑀 − 𝑀))
113	112	oveq2d 7368	. . . . . . . 8 ⊢ (𝑛 = 𝑀 → (-1↑(𝑀 − 𝑛)) = (-1↑(𝑀 − 𝑀)))
114	111, 113	oveq12d 7370	. . . . . . 7 ⊢ (𝑛 = 𝑀 → ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))) = ((𝑁C(2 · 𝑀)) · (-1↑(𝑀 − 𝑀))))
115		ovex 7385	. . . . . . 7 ⊢ ((𝑁C(2 · 𝑀)) · (-1↑(𝑀 − 𝑀))) ∈ V
116	114, 10, 115	fvmpt 6935	. . . . . 6 ⊢ (𝑀 ∈ ℕ₀ → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑀) = ((𝑁C(2 · 𝑀)) · (-1↑(𝑀 − 𝑀))))
117	3, 116	syl 17	. . . . 5 ⊢ (𝑀 ∈ ℕ → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑀) = ((𝑁C(2 · 𝑀)) · (-1↑(𝑀 − 𝑀))))
118	57	subidd 11467	. . . . . . . 8 ⊢ (𝑀 ∈ ℕ → (𝑀 − 𝑀) = 0)
119	118	oveq2d 7368	. . . . . . 7 ⊢ (𝑀 ∈ ℕ → (-1↑(𝑀 − 𝑀)) = (-1↑0))
120		exp0 13974	. . . . . . . 8 ⊢ (-1 ∈ ℂ → (-1↑0) = 1)
121	29, 120	ax-mp 5	. . . . . . 7 ⊢ (-1↑0) = 1
122	119, 121	eqtrdi 2784	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (-1↑(𝑀 − 𝑀)) = 1)
123	122	oveq2d 7368	. . . . 5 ⊢ (𝑀 ∈ ℕ → ((𝑁C(2 · 𝑀)) · (-1↑(𝑀 − 𝑀))) = ((𝑁C(2 · 𝑀)) · 1))
124	18	nnred 12147	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ∈ ℝ)
125	124	lep1d 12060	. . . . . . . . . 10 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ≤ ((2 · 𝑀) + 1))
126	125, 15	breqtrrdi 5135	. . . . . . . . 9 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ≤ 𝑁)
127	18	nnnn0d 12449	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ∈ ℕ₀)
128		nn0uz 12776	. . . . . . . . . . 11 ⊢ ℕ₀ = (ℤ_≥‘0)
129	127, 128	eleqtrdi 2843	. . . . . . . . . 10 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ∈ (ℤ_≥‘0))
130		elfz5 13418	. . . . . . . . . 10 ⊢ (((2 · 𝑀) ∈ (ℤ_≥‘0) ∧ 𝑁 ∈ ℤ) → ((2 · 𝑀) ∈ (0...𝑁) ↔ (2 · 𝑀) ≤ 𝑁))
131	129, 82, 130	syl2anc 584	. . . . . . . . 9 ⊢ (𝑀 ∈ ℕ → ((2 · 𝑀) ∈ (0...𝑁) ↔ (2 · 𝑀) ≤ 𝑁))
132	126, 131	mpbird 257	. . . . . . . 8 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ∈ (0...𝑁))
133		bccl2 14232	. . . . . . . 8 ⊢ ((2 · 𝑀) ∈ (0...𝑁) → (𝑁C(2 · 𝑀)) ∈ ℕ)
134	132, 133	syl 17	. . . . . . 7 ⊢ (𝑀 ∈ ℕ → (𝑁C(2 · 𝑀)) ∈ ℕ)
135	134	nncnd 12148	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (𝑁C(2 · 𝑀)) ∈ ℂ)
136	135	mulridd 11136	. . . . 5 ⊢ (𝑀 ∈ ℕ → ((𝑁C(2 · 𝑀)) · 1) = (𝑁C(2 · 𝑀)))
137	117, 123, 136	3eqtrd 2772	. . . 4 ⊢ (𝑀 ∈ ℕ → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑀) = (𝑁C(2 · 𝑀)))
138	134	nnne0d 12182	. . . 4 ⊢ (𝑀 ∈ ℕ → (𝑁C(2 · 𝑀)) ≠ 0)
139	137, 138	eqnetrd 2996	. . 3 ⊢ (𝑀 ∈ ℕ → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑀) ≠ 0)
140	42, 3, 37, 104, 109, 139	dgreq 26177	. 2 ⊢ (𝑀 ∈ ℕ → (deg‘𝑃) = 𝑀)
141	42, 3, 37, 104, 109	coeeq 26160	. 2 ⊢ (𝑀 ∈ ℕ → (coeff‘𝑃) = (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))))
142	42, 140, 141	3jca 1128	1 ⊢ (𝑀 ∈ ℕ → (𝑃 ∈ (Poly‘ℂ) ∧ (deg‘𝑃) = 𝑀 ∧ (coeff‘𝑃) = (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∨ wo 847 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 ≠ wne 2929 ∀wral 3048 {csn 4575 class class class wbr 5093 ↦ cmpt 5174 “ cima 5622 ⟶wf 6482 ‘cfv 6486 (class class class)co 7352 ℂcc 11011 ℝcr 11012 0cc0 11013 1c1 11014 + caddc 11016 · cmul 11018 < clt 11153 ≤ cle 11154 − cmin 11351 -cneg 11352 ℕcn 12132 2c2 12187 ℕ₀cn0 12388 ℤcz 12475 ℤ_≥cuz 12738 ...cfz 13409 ↑cexp 13970 Ccbc 14211 Σcsu 15595 Polycply 26117 coeffccoe 26119 degcdgr 26120

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-rep 5219 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-inf2 9538 ax-cnex 11069 ax-resscn 11070 ax-1cn 11071 ax-icn 11072 ax-addcl 11073 ax-addrcl 11074 ax-mulcl 11075 ax-mulrcl 11076 ax-mulcom 11077 ax-addass 11078 ax-mulass 11079 ax-distr 11080 ax-i2m1 11081 ax-1ne0 11082 ax-1rid 11083 ax-rnegex 11084 ax-rrecex 11085 ax-cnre 11086 ax-pre-lttri 11087 ax-pre-lttrn 11088 ax-pre-ltadd 11089 ax-pre-mulgt0 11090 ax-pre-sup 11091

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-int 4898 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-se 5573 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-isom 6495 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-of 7616 df-om 7803 df-1st 7927 df-2nd 7928 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-1o 8391 df-er 8628 df-map 8758 df-pm 8759 df-en 8876 df-dom 8877 df-sdom 8878 df-fin 8879 df-sup 9333 df-inf 9334 df-oi 9403 df-card 9839 df-pnf 11155 df-mnf 11156 df-xr 11157 df-ltxr 11158 df-le 11159 df-sub 11353 df-neg 11354 df-div 11782 df-nn 12133 df-2 12195 df-3 12196 df-n0 12389 df-z 12476 df-uz 12739 df-rp 12893 df-fz 13410 df-fzo 13557 df-fl 13698 df-seq 13911 df-exp 13971 df-fac 14183 df-bc 14212 df-hash 14240 df-cj 15008 df-re 15009 df-im 15010 df-sqrt 15144 df-abs 15145 df-clim 15397 df-rlim 15398 df-sum 15596 df-0p 25599 df-ply 26121 df-coe 26123 df-dgr 26124

This theorem is referenced by: basellem4 27022 basellem5 27023

W3C validator