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 27048

Description: Lemma for basel 27056. 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 3957	. . . 4 ⊢ (𝑀 ∈ ℕ → ℂ ⊆ ℂ)
3		nnnn0 12408	. . . 4 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℕ₀)
4		elfznn0 13536	. . . . . . 7 ⊢ (𝑗 ∈ (0...𝑀) → 𝑗 ∈ ℕ₀)
5		oveq2 7366	. . . . . . . . . 10 ⊢ (𝑛 = 𝑗 → (2 · 𝑛) = (2 · 𝑗))
6	5	oveq2d 7374	. . . . . . . . 9 ⊢ (𝑛 = 𝑗 → (𝑁C(2 · 𝑛)) = (𝑁C(2 · 𝑗)))
7		oveq2 7366	. . . . . . . . . 10 ⊢ (𝑛 = 𝑗 → (𝑀 − 𝑛) = (𝑀 − 𝑗))
8	7	oveq2d 7374	. . . . . . . . 9 ⊢ (𝑛 = 𝑗 → (-1↑(𝑀 − 𝑛)) = (-1↑(𝑀 − 𝑗)))
9	6, 8	oveq12d 7376	. . . . . . . 8 ⊢ (𝑛 = 𝑗 → ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))) = ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))))
10		eqid 2736	. . . . . . . 8 ⊢ (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))) = (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))
11		ovex 7391	. . . . . . . 8 ⊢ ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) ∈ V
12	9, 10, 11	fvmpt 6941	. . . . . . 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 12218	. . . . . . . . . . . . . 14 ⊢ 2 ∈ ℕ
17		nnmulcl 12169	. . . . . . . . . . . . . 14 ⊢ ((2 ∈ ℕ ∧ 𝑀 ∈ ℕ) → (2 · 𝑀) ∈ ℕ)
18	16, 17	mpan 690	. . . . . . . . . . . . 13 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ∈ ℕ)
19	18	peano2nnd 12162	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ ℕ → ((2 · 𝑀) + 1) ∈ ℕ)
20	15, 19	eqeltrid 2840	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℕ → 𝑁 ∈ ℕ)
21	20	nnnn0d 12462	. . . . . . . . . 10 ⊢ (𝑀 ∈ ℕ → 𝑁 ∈ ℕ₀)
22		2z 12523	. . . . . . . . . . 11 ⊢ 2 ∈ ℤ
23		nn0z 12512	. . . . . . . . . . 11 ⊢ (𝑛 ∈ ℕ₀ → 𝑛 ∈ ℤ)
24		zmulcl 12540	. . . . . . . . . . 11 ⊢ ((2 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (2 · 𝑛) ∈ ℤ)
25	22, 23, 24	sylancr 587	. . . . . . . . . 10 ⊢ (𝑛 ∈ ℕ₀ → (2 · 𝑛) ∈ ℤ)
26		bccl 14245	. . . . . . . . . 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 12464	. . . . . . . 8 ⊢ ((𝑀 ∈ ℕ ∧ 𝑛 ∈ ℕ₀) → (𝑁C(2 · 𝑛)) ∈ ℂ)
29		neg1cn 12130	. . . . . . . . 9 ⊢ -1 ∈ ℂ
30		neg1ne0 12132	. . . . . . . . 9 ⊢ -1 ≠ 0
31		nnz 12509	. . . . . . . . . 10 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℤ)
32		zsubcl 12533	. . . . . . . . . 10 ⊢ ((𝑀 ∈ ℤ ∧ 𝑛 ∈ ℤ) → (𝑀 − 𝑛) ∈ ℤ)
33	31, 23, 32	syl2an 596	. . . . . . . . 9 ⊢ ((𝑀 ∈ ℕ ∧ 𝑛 ∈ ℕ₀) → (𝑀 − 𝑛) ∈ ℤ)
34		expclz 14007	. . . . . . . . 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 11152	. . . . . . 7 ⊢ ((𝑀 ∈ ℕ ∧ 𝑛 ∈ ℕ₀) → ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))) ∈ ℂ)
37	36	fmpttd 7060	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛)))):ℕ₀⟶ℂ)
38		ffvelcdm 7026	. . . . . 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 2837	. . . 4 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ (0...𝑀)) → ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) ∈ ℂ)
41	2, 3, 40	elplyd 26163	. . 3 ⊢ (𝑀 ∈ ℕ → (𝑡 ∈ ℂ ↦ Σ𝑗 ∈ (0...𝑀)(((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) · (𝑡↑𝑗))) ∈ (Poly‘ℂ))
42	1, 41	eqeltrid 2840	. 2 ⊢ (𝑀 ∈ ℕ → 𝑃 ∈ (Poly‘ℂ))
43		nnre 12152	. . . . . . . 8 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℝ)
44		nn0re 12410	. . . . . . . 8 ⊢ (𝑗 ∈ ℕ₀ → 𝑗 ∈ ℝ)
45		ltnle 11212	. . . . . . . 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 12512	. . . . . . . . . . . . 13 ⊢ (𝑗 ∈ ℕ₀ → 𝑗 ∈ ℤ)
50	49	ad2antlr 727	. . . . . . . . . . . 12 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 𝑗 ∈ ℤ)
51		zmulcl 12540	. . . . . . . . . . . 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 11084	. . . . . . . . . . . . . . . . 17 ⊢ 1 ∈ ℂ
54	53	2timesi 12278	. . . . . . . . . . . . . . . 16 ⊢ (2 · 1) = (1 + 1)
55	54	oveq2i 7369	. . . . . . . . . . . . . . 15 ⊢ ((2 · 𝑀) + (2 · 1)) = ((2 · 𝑀) + (1 + 1))
56		2cnd 12223	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 2 ∈ ℂ)
57		nncn 12153	. . . . . . . . . . . . . . . . 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 11156	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · (𝑀 + 1)) = ((2 · 𝑀) + (2 · 1)))
61	15	oveq1i 7368	. . . . . . . . . . . . . . . 16 ⊢ (𝑁 + 1) = (((2 · 𝑀) + 1) + 1)
62	18	ad2antrr 726	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · 𝑀) ∈ ℕ)
63	62	nncnd 12161	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · 𝑀) ∈ ℂ)
64	63, 59, 59	addassd 11154	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (((2 · 𝑀) + 1) + 1) = ((2 · 𝑀) + (1 + 1)))
65	61, 64	eqtrid 2783	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (𝑁 + 1) = ((2 · 𝑀) + (1 + 1)))
66	55, 60, 65	3eqtr4a 2797	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (2 · (𝑀 + 1)) = (𝑁 + 1))
67		zltp1le 12541	. . . . . . . . . . . . . . . . 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 11306	. . . . . . . . . . . . . . . . 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 12219	. . . . . . . . . . . . . . . . . 18 ⊢ 2 ∈ ℝ
75		2pos 12248	. . . . . . . . . . . . . . . . . 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 11994	. . . . . . . . . . . . . . . 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 5122	. . . . . . . . . . . . 13 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (𝑁 + 1) ≤ (2 · 𝑗))
82	20	nnzd 12514	. . . . . . . . . . . . . . 15 ⊢ (𝑀 ∈ ℕ → 𝑁 ∈ ℤ)
83	82	ad2antrr 726	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → 𝑁 ∈ ℤ)
84		zltp1le 12541	. . . . . . . . . . . . . 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 14230	. . . . . . . . . . 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 7373	. . . . . . . . 9 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → ((𝑁C(2 · 𝑗)) · (-1↑(𝑀 − 𝑗))) = (0 · (-1↑(𝑀 − 𝑗))))
91		zsubcl 12533	. . . . . . . . . . . . 13 ⊢ ((𝑀 ∈ ℤ ∧ 𝑗 ∈ ℤ) → (𝑀 − 𝑗) ∈ ℤ)
92	31, 49, 91	syl2an 596	. . . . . . . . . . . 12 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) → (𝑀 − 𝑗) ∈ ℤ)
93		expclz 14007	. . . . . . . . . . . 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 11331	. . . . . . . . 9 ⊢ (((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) ∧ 𝑀 < 𝑗) → (0 · (-1↑(𝑀 − 𝑗))) = 0)
97	47, 90, 96	3eqtrd 2775	. . . . . . . 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 2949	. . . . 5 ⊢ ((𝑀 ∈ ℕ ∧ 𝑗 ∈ ℕ₀) → (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) ≠ 0 → 𝑗 ≤ 𝑀))
101	100	ralrimiva 3128	. . . 4 ⊢ (𝑀 ∈ ℕ → ∀𝑗 ∈ ℕ₀ (((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑗) ≠ 0 → 𝑗 ≤ 𝑀))
102		plyco0 26153	. . . . 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 7373	. . . . . . 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 15621	. . . . . 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 5194	. . . . 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 2762	. . . 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 7366	. . . . . . . . 9 ⊢ (𝑛 = 𝑀 → (2 · 𝑛) = (2 · 𝑀))
111	110	oveq2d 7374	. . . . . . . 8 ⊢ (𝑛 = 𝑀 → (𝑁C(2 · 𝑛)) = (𝑁C(2 · 𝑀)))
112		oveq2 7366	. . . . . . . . 9 ⊢ (𝑛 = 𝑀 → (𝑀 − 𝑛) = (𝑀 − 𝑀))
113	112	oveq2d 7374	. . . . . . . 8 ⊢ (𝑛 = 𝑀 → (-1↑(𝑀 − 𝑛)) = (-1↑(𝑀 − 𝑀)))
114	111, 113	oveq12d 7376	. . . . . . 7 ⊢ (𝑛 = 𝑀 → ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))) = ((𝑁C(2 · 𝑀)) · (-1↑(𝑀 − 𝑀))))
115		ovex 7391	. . . . . . 7 ⊢ ((𝑁C(2 · 𝑀)) · (-1↑(𝑀 − 𝑀))) ∈ V
116	114, 10, 115	fvmpt 6941	. . . . . 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 11480	. . . . . . . 8 ⊢ (𝑀 ∈ ℕ → (𝑀 − 𝑀) = 0)
119	118	oveq2d 7374	. . . . . . 7 ⊢ (𝑀 ∈ ℕ → (-1↑(𝑀 − 𝑀)) = (-1↑0))
120		exp0 13988	. . . . . . . 8 ⊢ (-1 ∈ ℂ → (-1↑0) = 1)
121	29, 120	ax-mp 5	. . . . . . 7 ⊢ (-1↑0) = 1
122	119, 121	eqtrdi 2787	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (-1↑(𝑀 − 𝑀)) = 1)
123	122	oveq2d 7374	. . . . 5 ⊢ (𝑀 ∈ ℕ → ((𝑁C(2 · 𝑀)) · (-1↑(𝑀 − 𝑀))) = ((𝑁C(2 · 𝑀)) · 1))
124	18	nnred 12160	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ∈ ℝ)
125	124	lep1d 12073	. . . . . . . . . 10 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ≤ ((2 · 𝑀) + 1))
126	125, 15	breqtrrdi 5140	. . . . . . . . 9 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ≤ 𝑁)
127	18	nnnn0d 12462	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ∈ ℕ₀)
128		nn0uz 12789	. . . . . . . . . . 11 ⊢ ℕ₀ = (ℤ_≥‘0)
129	127, 128	eleqtrdi 2846	. . . . . . . . . 10 ⊢ (𝑀 ∈ ℕ → (2 · 𝑀) ∈ (ℤ_≥‘0))
130		elfz5 13432	. . . . . . . . . 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 14246	. . . . . . . 8 ⊢ ((2 · 𝑀) ∈ (0...𝑁) → (𝑁C(2 · 𝑀)) ∈ ℕ)
134	132, 133	syl 17	. . . . . . 7 ⊢ (𝑀 ∈ ℕ → (𝑁C(2 · 𝑀)) ∈ ℕ)
135	134	nncnd 12161	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (𝑁C(2 · 𝑀)) ∈ ℂ)
136	135	mulridd 11149	. . . . 5 ⊢ (𝑀 ∈ ℕ → ((𝑁C(2 · 𝑀)) · 1) = (𝑁C(2 · 𝑀)))
137	117, 123, 136	3eqtrd 2775	. . . 4 ⊢ (𝑀 ∈ ℕ → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑀) = (𝑁C(2 · 𝑀)))
138	134	nnne0d 12195	. . . 4 ⊢ (𝑀 ∈ ℕ → (𝑁C(2 · 𝑀)) ≠ 0)
139	137, 138	eqnetrd 2999	. . 3 ⊢ (𝑀 ∈ ℕ → ((𝑛 ∈ ℕ₀ ↦ ((𝑁C(2 · 𝑛)) · (-1↑(𝑀 − 𝑛))))‘𝑀) ≠ 0)
140	42, 3, 37, 104, 109, 139	dgreq 26205	. 2 ⊢ (𝑀 ∈ ℕ → (deg‘𝑃) = 𝑀)
141	42, 3, 37, 104, 109	coeeq 26188	. 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 2932 ∀wral 3051 {csn 4580 class class class wbr 5098 ↦ cmpt 5179 “ cima 5627 ⟶wf 6488 ‘cfv 6492 (class class class)co 7358 ℂcc 11024 ℝcr 11025 0cc0 11026 1c1 11027 + caddc 11029 · cmul 11031 < clt 11166 ≤ cle 11167 − cmin 11364 -cneg 11365 ℕcn 12145 2c2 12200 ℕ₀cn0 12401 ℤcz 12488 ℤ_≥cuz 12751 ...cfz 13423 ↑cexp 13984 Ccbc 14225 Σcsu 15609 Polycply 26145 coeffccoe 26147 degcdgr 26148

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 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-inf2 9550 ax-cnex 11082 ax-resscn 11083 ax-1cn 11084 ax-icn 11085 ax-addcl 11086 ax-addrcl 11087 ax-mulcl 11088 ax-mulrcl 11089 ax-mulcom 11090 ax-addass 11091 ax-mulass 11092 ax-distr 11093 ax-i2m1 11094 ax-1ne0 11095 ax-1rid 11096 ax-rnegex 11097 ax-rrecex 11098 ax-cnre 11099 ax-pre-lttri 11100 ax-pre-lttrn 11101 ax-pre-ltadd 11102 ax-pre-mulgt0 11103 ax-pre-sup 11104

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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3350 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-int 4903 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-se 5578 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-isom 6501 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-of 7622 df-om 7809 df-1st 7933 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-1o 8397 df-er 8635 df-map 8765 df-pm 8766 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-sup 9345 df-inf 9346 df-oi 9415 df-card 9851 df-pnf 11168 df-mnf 11169 df-xr 11170 df-ltxr 11171 df-le 11172 df-sub 11366 df-neg 11367 df-div 11795 df-nn 12146 df-2 12208 df-3 12209 df-n0 12402 df-z 12489 df-uz 12752 df-rp 12906 df-fz 13424 df-fzo 13571 df-fl 13712 df-seq 13925 df-exp 13985 df-fac 14197 df-bc 14226 df-hash 14254 df-cj 15022 df-re 15023 df-im 15024 df-sqrt 15158 df-abs 15159 df-clim 15411 df-rlim 15412 df-sum 15610 df-0p 25627 df-ply 26149 df-coe 26151 df-dgr 26152

This theorem is referenced by: basellem4 27050 basellem5 27051

W3C validator