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Theorem taylply2OLD 26321

Description: Obsolete version of taylply2 26320 as of 30-Apr-2025. (Contributed by Mario Carneiro, 1-Jan-2017.) (Proof modification is discouraged.) (New usage is discouraged.)

**Hypotheses**
Ref	Expression
taylpfval.s	⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
taylpfval.f	⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
taylpfval.a	⊢ (𝜑 → 𝐴 ⊆ 𝑆)
taylpfval.n	⊢ (𝜑 → 𝑁 ∈ ℕ₀)
taylpfval.b	⊢ (𝜑 → 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑁))
taylpfval.t	⊢ 𝑇 = (𝑁(𝑆 Tayl 𝐹)𝐵)
taylply2.1	⊢ (𝜑 → 𝐷 ∈ (SubRing‘ℂ_fld))
taylply2.2	⊢ (𝜑 → 𝐵 ∈ 𝐷)
taylply2.3	⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → ((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) ∈ 𝐷)

**Assertion**
Ref	Expression
taylply2OLD	⊢ (𝜑 → (𝑇 ∈ (Poly‘𝐷) ∧ (deg‘𝑇) ≤ 𝑁))

Distinct variable groups: 𝐵,𝑘 𝑘,𝐹 𝑘,𝑁 𝜑,𝑘 𝐷,𝑘 𝑆,𝑘 Allowed substitution hints: 𝐴(𝑘) 𝑇(𝑘)

Proof of Theorem taylply2OLD Dummy variables 𝑢 𝑣 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		taylpfval.s	. . . . 5 ⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
2		taylpfval.f	. . . . 5 ⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
3		taylpfval.a	. . . . 5 ⊢ (𝜑 → 𝐴 ⊆ 𝑆)
4		taylpfval.n	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
5		taylpfval.b	. . . . 5 ⊢ (𝜑 → 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑁))
6		taylpfval.t	. . . . 5 ⊢ 𝑇 = (𝑁(𝑆 Tayl 𝐹)𝐵)
7	1, 2, 3, 4, 5, 6	taylpfval 26317	. . . 4 ⊢ (𝜑 → 𝑇 = (𝑥 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑥 − 𝐵)↑𝑘))))
8		simpr 483	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ℂ) → 𝑥 ∈ ℂ)
9		cnex 11225	. . . . . . . . . . . . 13 ⊢ ℂ ∈ V
10	9	a1i 11	. . . . . . . . . . . 12 ⊢ (𝜑 → ℂ ∈ V)
11		elpm2r 8868	. . . . . . . . . . . 12 ⊢ (((ℂ ∈ V ∧ 𝑆 ∈ {ℝ, ℂ}) ∧ (𝐹:𝐴⟶ℂ ∧ 𝐴 ⊆ 𝑆)) → 𝐹 ∈ (ℂ ↑_pm 𝑆))
12	10, 1, 2, 3, 11	syl22anc 837	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐹 ∈ (ℂ ↑_pm 𝑆))
13		dvnbss 25876	. . . . . . . . . . 11 ⊢ ((𝑆 ∈ {ℝ, ℂ} ∧ 𝐹 ∈ (ℂ ↑_pm 𝑆) ∧ 𝑁 ∈ ℕ₀) → dom ((𝑆 D^𝑛 𝐹)‘𝑁) ⊆ dom 𝐹)
14	1, 12, 4, 13	syl3anc 1368	. . . . . . . . . 10 ⊢ (𝜑 → dom ((𝑆 D^𝑛 𝐹)‘𝑁) ⊆ dom 𝐹)
15	2, 14	fssdmd 6744	. . . . . . . . 9 ⊢ (𝜑 → dom ((𝑆 D^𝑛 𝐹)‘𝑁) ⊆ 𝐴)
16		recnprss 25851	. . . . . . . . . . 11 ⊢ (𝑆 ∈ {ℝ, ℂ} → 𝑆 ⊆ ℂ)
17	1, 16	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → 𝑆 ⊆ ℂ)
18	3, 17	sstrd 3990	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 ⊆ ℂ)
19	15, 18	sstrd 3990	. . . . . . . 8 ⊢ (𝜑 → dom ((𝑆 D^𝑛 𝐹)‘𝑁) ⊆ ℂ)
20	19, 5	sseldd 3981	. . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℂ)
21	20	adantr 479	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ℂ) → 𝐵 ∈ ℂ)
22	8, 21	subcld 11607	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ℂ) → (𝑥 − 𝐵) ∈ ℂ)
23		df-idp 26141	. . . . . . . 8 ⊢ X_p = ( I ↾ ℂ)
24		mptresid 6057	. . . . . . . 8 ⊢ ( I ↾ ℂ) = (𝑥 ∈ ℂ ↦ 𝑥)
25	23, 24	eqtri 2755	. . . . . . 7 ⊢ X_p = (𝑥 ∈ ℂ ↦ 𝑥)
26	25	a1i 11	. . . . . 6 ⊢ (𝜑 → X_p = (𝑥 ∈ ℂ ↦ 𝑥))
27		fconstmpt 5742	. . . . . . 7 ⊢ (ℂ × {𝐵}) = (𝑥 ∈ ℂ ↦ 𝐵)
28	27	a1i 11	. . . . . 6 ⊢ (𝜑 → (ℂ × {𝐵}) = (𝑥 ∈ ℂ ↦ 𝐵))
29	10, 8, 21, 26, 28	offval2 7709	. . . . 5 ⊢ (𝜑 → (X_p ∘_f − (ℂ × {𝐵})) = (𝑥 ∈ ℂ ↦ (𝑥 − 𝐵)))
30		eqidd 2728	. . . . 5 ⊢ (𝜑 → (𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))) = (𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))))
31		oveq1 7431	. . . . . . 7 ⊢ (𝑦 = (𝑥 − 𝐵) → (𝑦↑𝑘) = ((𝑥 − 𝐵)↑𝑘))
32	31	oveq2d 7440	. . . . . 6 ⊢ (𝑦 = (𝑥 − 𝐵) → (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)) = (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑥 − 𝐵)↑𝑘)))
33	32	sumeq2sdv 15688	. . . . 5 ⊢ (𝑦 = (𝑥 − 𝐵) → Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)) = Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑥 − 𝐵)↑𝑘)))
34	22, 29, 30, 33	fmptco 7142	. . . 4 ⊢ (𝜑 → ((𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))) ∘ (X_p ∘_f − (ℂ × {𝐵}))) = (𝑥 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑥 − 𝐵)↑𝑘))))
35	7, 34	eqtr4d 2770	. . 3 ⊢ (𝜑 → 𝑇 = ((𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))) ∘ (X_p ∘_f − (ℂ × {𝐵}))))
36		taylply2.1	. . . . . 6 ⊢ (𝜑 → 𝐷 ∈ (SubRing‘ℂ_fld))
37		cnfldbas 21288	. . . . . . 7 ⊢ ℂ = (Base‘ℂ_fld)
38	37	subrgss 20516	. . . . . 6 ⊢ (𝐷 ∈ (SubRing‘ℂ_fld) → 𝐷 ⊆ ℂ)
39	36, 38	syl 17	. . . . 5 ⊢ (𝜑 → 𝐷 ⊆ ℂ)
40		taylply2.3	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → ((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) ∈ 𝐷)
41	39, 4, 40	elplyd 26154	. . . 4 ⊢ (𝜑 → (𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))) ∈ (Poly‘𝐷))
42		cnfld1 21326	. . . . . . . 8 ⊢ 1 = (1_r‘ℂ_fld)
43	42	subrg1cl 20524	. . . . . . 7 ⊢ (𝐷 ∈ (SubRing‘ℂ_fld) → 1 ∈ 𝐷)
44	36, 43	syl 17	. . . . . 6 ⊢ (𝜑 → 1 ∈ 𝐷)
45		plyid 26161	. . . . . 6 ⊢ ((𝐷 ⊆ ℂ ∧ 1 ∈ 𝐷) → X_p ∈ (Poly‘𝐷))
46	39, 44, 45	syl2anc 582	. . . . 5 ⊢ (𝜑 → X_p ∈ (Poly‘𝐷))
47		taylply2.2	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ 𝐷)
48		plyconst 26158	. . . . . 6 ⊢ ((𝐷 ⊆ ℂ ∧ 𝐵 ∈ 𝐷) → (ℂ × {𝐵}) ∈ (Poly‘𝐷))
49	39, 47, 48	syl2anc 582	. . . . 5 ⊢ (𝜑 → (ℂ × {𝐵}) ∈ (Poly‘𝐷))
50		subrgsubg 20521	. . . . . . 7 ⊢ (𝐷 ∈ (SubRing‘ℂ_fld) → 𝐷 ∈ (SubGrp‘ℂ_fld))
51	36, 50	syl 17	. . . . . 6 ⊢ (𝜑 → 𝐷 ∈ (SubGrp‘ℂ_fld))
52		cnfldadd 21290	. . . . . . . 8 ⊢ + = (+_g‘ℂ_fld)
53	52	subgcl 19096	. . . . . . 7 ⊢ ((𝐷 ∈ (SubGrp‘ℂ_fld) ∧ 𝑢 ∈ 𝐷 ∧ 𝑣 ∈ 𝐷) → (𝑢 + 𝑣) ∈ 𝐷)
54	53	3expb 1117	. . . . . 6 ⊢ ((𝐷 ∈ (SubGrp‘ℂ_fld) ∧ (𝑢 ∈ 𝐷 ∧ 𝑣 ∈ 𝐷)) → (𝑢 + 𝑣) ∈ 𝐷)
55	51, 54	sylan 578	. . . . 5 ⊢ ((𝜑 ∧ (𝑢 ∈ 𝐷 ∧ 𝑣 ∈ 𝐷)) → (𝑢 + 𝑣) ∈ 𝐷)
56		cnfldmul 21292	. . . . . . . 8 ⊢ · = (._r‘ℂ_fld)
57	56	subrgmcl 20528	. . . . . . 7 ⊢ ((𝐷 ∈ (SubRing‘ℂ_fld) ∧ 𝑢 ∈ 𝐷 ∧ 𝑣 ∈ 𝐷) → (𝑢 · 𝑣) ∈ 𝐷)
58	57	3expb 1117	. . . . . 6 ⊢ ((𝐷 ∈ (SubRing‘ℂ_fld) ∧ (𝑢 ∈ 𝐷 ∧ 𝑣 ∈ 𝐷)) → (𝑢 · 𝑣) ∈ 𝐷)
59	36, 58	sylan 578	. . . . 5 ⊢ ((𝜑 ∧ (𝑢 ∈ 𝐷 ∧ 𝑣 ∈ 𝐷)) → (𝑢 · 𝑣) ∈ 𝐷)
60		ax-1cn 11202	. . . . . . 7 ⊢ 1 ∈ ℂ
61		cnfldneg 21328	. . . . . . 7 ⊢ (1 ∈ ℂ → ((inv_g‘ℂ_fld)‘1) = -1)
62	60, 61	ax-mp 5	. . . . . 6 ⊢ ((inv_g‘ℂ_fld)‘1) = -1
63		eqid 2727	. . . . . . . 8 ⊢ (inv_g‘ℂ_fld) = (inv_g‘ℂ_fld)
64	63	subginvcl 19095	. . . . . . 7 ⊢ ((𝐷 ∈ (SubGrp‘ℂ_fld) ∧ 1 ∈ 𝐷) → ((inv_g‘ℂ_fld)‘1) ∈ 𝐷)
65	51, 44, 64	syl2anc 582	. . . . . 6 ⊢ (𝜑 → ((inv_g‘ℂ_fld)‘1) ∈ 𝐷)
66	62, 65	eqeltrrid 2833	. . . . 5 ⊢ (𝜑 → -1 ∈ 𝐷)
67	46, 49, 55, 59, 66	plysub 26171	. . . 4 ⊢ (𝜑 → (X_p ∘_f − (ℂ × {𝐵})) ∈ (Poly‘𝐷))
68	41, 67, 55, 59	plyco 26193	. . 3 ⊢ (𝜑 → ((𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))) ∘ (X_p ∘_f − (ℂ × {𝐵}))) ∈ (Poly‘𝐷))
69	35, 68	eqeltrd 2828	. 2 ⊢ (𝜑 → 𝑇 ∈ (Poly‘𝐷))
70	35	fveq2d 6904	. . . 4 ⊢ (𝜑 → (deg‘𝑇) = (deg‘((𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))) ∘ (X_p ∘_f − (ℂ × {𝐵})))))
71		eqid 2727	. . . . 5 ⊢ (deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) = (deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))))
72		eqid 2727	. . . . 5 ⊢ (deg‘(X_p ∘_f − (ℂ × {𝐵}))) = (deg‘(X_p ∘_f − (ℂ × {𝐵})))
73	71, 72, 41, 67	dgrco 26228	. . . 4 ⊢ (𝜑 → (deg‘((𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))) ∘ (X_p ∘_f − (ℂ × {𝐵})))) = ((deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) · (deg‘(X_p ∘_f − (ℂ × {𝐵})))))
74		eqid 2727	. . . . . . . . 9 ⊢ (X_p ∘_f − (ℂ × {𝐵})) = (X_p ∘_f − (ℂ × {𝐵}))
75	74	plyremlem 26257	. . . . . . . 8 ⊢ (𝐵 ∈ ℂ → ((X_p ∘_f − (ℂ × {𝐵})) ∈ (Poly‘ℂ) ∧ (deg‘(X_p ∘_f − (ℂ × {𝐵}))) = 1 ∧ (^◡(X_p ∘_f − (ℂ × {𝐵})) “ {0}) = {𝐵}))
76	20, 75	syl 17	. . . . . . 7 ⊢ (𝜑 → ((X_p ∘_f − (ℂ × {𝐵})) ∈ (Poly‘ℂ) ∧ (deg‘(X_p ∘_f − (ℂ × {𝐵}))) = 1 ∧ (^◡(X_p ∘_f − (ℂ × {𝐵})) “ {0}) = {𝐵}))
77	76	simp2d 1140	. . . . . 6 ⊢ (𝜑 → (deg‘(X_p ∘_f − (ℂ × {𝐵}))) = 1)
78	77	oveq2d 7440	. . . . 5 ⊢ (𝜑 → ((deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) · (deg‘(X_p ∘_f − (ℂ × {𝐵})))) = ((deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) · 1))
79		dgrcl 26185	. . . . . . . 8 ⊢ ((𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘))) ∈ (Poly‘𝐷) → (deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) ∈ ℕ₀)
80	41, 79	syl 17	. . . . . . 7 ⊢ (𝜑 → (deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) ∈ ℕ₀)
81	80	nn0cnd 12570	. . . . . 6 ⊢ (𝜑 → (deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) ∈ ℂ)
82	81	mulridd 11267	. . . . 5 ⊢ (𝜑 → ((deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) · 1) = (deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))))
83	78, 82	eqtrd 2767	. . . 4 ⊢ (𝜑 → ((deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) · (deg‘(X_p ∘_f − (ℂ × {𝐵})))) = (deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))))
84	70, 73, 83	3eqtrd 2771	. . 3 ⊢ (𝜑 → (deg‘𝑇) = (deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))))
85	1	adantr 479	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝑆 ∈ {ℝ, ℂ})
86	12	adantr 479	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝐹 ∈ (ℂ ↑_pm 𝑆))
87		elfznn0 13632	. . . . . . . 8 ⊢ (𝑘 ∈ (0...𝑁) → 𝑘 ∈ ℕ₀)
88	87	adantl 480	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝑘 ∈ ℕ₀)
89		dvnf 25875	. . . . . . 7 ⊢ ((𝑆 ∈ {ℝ, ℂ} ∧ 𝐹 ∈ (ℂ ↑_pm 𝑆) ∧ 𝑘 ∈ ℕ₀) → ((𝑆 D^𝑛 𝐹)‘𝑘):dom ((𝑆 D^𝑛 𝐹)‘𝑘)⟶ℂ)
90	85, 86, 88, 89	syl3anc 1368	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → ((𝑆 D^𝑛 𝐹)‘𝑘):dom ((𝑆 D^𝑛 𝐹)‘𝑘)⟶ℂ)
91		simpr 483	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝑘 ∈ (0...𝑁))
92		dvn2bss 25878	. . . . . . . 8 ⊢ ((𝑆 ∈ {ℝ, ℂ} ∧ 𝐹 ∈ (ℂ ↑_pm 𝑆) ∧ 𝑘 ∈ (0...𝑁)) → dom ((𝑆 D^𝑛 𝐹)‘𝑁) ⊆ dom ((𝑆 D^𝑛 𝐹)‘𝑘))
93	85, 86, 91, 92	syl3anc 1368	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → dom ((𝑆 D^𝑛 𝐹)‘𝑁) ⊆ dom ((𝑆 D^𝑛 𝐹)‘𝑘))
94	5	adantr 479	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑁))
95	93, 94	sseldd 3981	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑘))
96	90, 95	ffvelcdmd 7098	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → (((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) ∈ ℂ)
97	88	faccld 14281	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ∈ ℕ)
98	97	nncnd 12264	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ∈ ℂ)
99	97	nnne0d 12298	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ≠ 0)
100	96, 98, 99	divcld 12026	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → ((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) ∈ ℂ)
101	41, 4, 100, 30	dgrle 26195	. . 3 ⊢ (𝜑 → (deg‘(𝑦 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (𝑦↑𝑘)))) ≤ 𝑁)
102	84, 101	eqbrtrd 5172	. 2 ⊢ (𝜑 → (deg‘𝑇) ≤ 𝑁)
103	69, 102	jca 510	1 ⊢ (𝜑 → (𝑇 ∈ (Poly‘𝐷) ∧ (deg‘𝑇) ≤ 𝑁))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 Vcvv 3471 ⊆ wss 3947 {csn 4630 {cpr 4632 class class class wbr 5150 ↦ cmpt 5233 I cid 5577 × cxp 5678 ^◡ccnv 5679 dom cdm 5680 ↾ cres 5682 “ cima 5683 ∘ ccom 5684 ⟶wf 6547 ‘cfv 6551 (class class class)co 7424 ∘_f cof 7687 ↑_pm cpm 8850 ℂcc 11142 ℝcr 11143 0cc0 11144 1c1 11145 + caddc 11147 · cmul 11149 ≤ cle 11285 − cmin 11480 -cneg 11481 / cdiv 11907 ℕ₀cn0 12508 ...cfz 13522 ↑cexp 14064 !cfa 14270 Σcsu 15670 inv_gcminusg 18896 SubGrpcsubg 19080 SubRingcsubrg 20511 ℂ_fldccnfld 21284 D^𝑛 cdvn 25811 Polycply 26136 X_pcidp 26137 degcdgr 26139 Tayl ctayl 26305

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2698 ax-rep 5287 ax-sep 5301 ax-nul 5308 ax-pow 5367 ax-pr 5431 ax-un 7744 ax-inf2 9670 ax-cnex 11200 ax-resscn 11201 ax-1cn 11202 ax-icn 11203 ax-addcl 11204 ax-addrcl 11205 ax-mulcl 11206 ax-mulrcl 11207 ax-mulcom 11208 ax-addass 11209 ax-mulass 11210 ax-distr 11211 ax-i2m1 11212 ax-1ne0 11213 ax-1rid 11214 ax-rnegex 11215 ax-rrecex 11216 ax-cnre 11217 ax-pre-lttri 11218 ax-pre-lttrn 11219 ax-pre-ltadd 11220 ax-pre-mulgt0 11221 ax-pre-sup 11222 ax-addf 11223 ax-mulf 11224

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2937 df-nel 3043 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4325 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-tp 4635 df-op 4637 df-uni 4911 df-int 4952 df-iun 5000 df-iin 5001 df-br 5151 df-opab 5213 df-mpt 5234 df-tr 5268 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5635 df-se 5636 df-we 5637 df-xp 5686 df-rel 5687 df-cnv 5688 df-co 5689 df-dm 5690 df-rn 5691 df-res 5692 df-ima 5693 df-pred 6308 df-ord 6375 df-on 6376 df-lim 6377 df-suc 6378 df-iota 6503 df-fun 6553 df-fn 6554 df-f 6555 df-f1 6556 df-fo 6557 df-f1o 6558 df-fv 6559 df-isom 6560 df-riota 7380 df-ov 7427 df-oprab 7428 df-mpo 7429 df-of 7689 df-om 7875 df-1st 7997 df-2nd 7998 df-supp 8170 df-frecs 8291 df-wrecs 8322 df-recs 8396 df-rdg 8435 df-1o 8491 df-er 8729 df-map 8851 df-pm 8852 df-en 8969 df-dom 8970 df-sdom 8971 df-fin 8972 df-fsupp 9392 df-fi 9440 df-sup 9471 df-inf 9472 df-oi 9539 df-card 9968 df-pnf 11286 df-mnf 11287 df-xr 11288 df-ltxr 11289 df-le 11290 df-sub 11482 df-neg 11483 df-div 11908 df-nn 12249 df-2 12311 df-3 12312 df-4 12313 df-5 12314 df-6 12315 df-7 12316 df-8 12317 df-9 12318 df-n0 12509 df-z 12595 df-dec 12714 df-uz 12859 df-q 12969 df-rp 13013 df-xneg 13130 df-xadd 13131 df-xmul 13132 df-icc 13369 df-fz 13523 df-fzo 13666 df-fl 13795 df-seq 14005 df-exp 14065 df-fac 14271 df-hash 14328 df-cj 15084 df-re 15085 df-im 15086 df-sqrt 15220 df-abs 15221 df-clim 15470 df-rlim 15471 df-sum 15671 df-struct 17121 df-sets 17138 df-slot 17156 df-ndx 17168 df-base 17186 df-ress 17215 df-plusg 17251 df-mulr 17252 df-starv 17253 df-tset 17257 df-ple 17258 df-ds 17260 df-unif 17261 df-rest 17409 df-topn 17410 df-0g 17428 df-gsum 17429 df-topgen 17430 df-mgm 18605 df-sgrp 18684 df-mnd 18700 df-grp 18898 df-minusg 18899 df-subg 19083 df-cntz 19273 df-cmn 19742 df-abl 19743 df-mgp 20080 df-rng 20098 df-ur 20127 df-ring 20180 df-cring 20181 df-subrng 20488 df-subrg 20513 df-psmet 21276 df-xmet 21277 df-met 21278 df-bl 21279 df-mopn 21280 df-fbas 21281 df-fg 21282 df-cnfld 21285 df-top 22814 df-topon 22831 df-topsp 22853 df-bases 22867 df-cld 22941 df-ntr 22942 df-cls 22943 df-nei 23020 df-lp 23058 df-perf 23059 df-cnp 23150 df-haus 23237 df-fil 23768 df-fm 23860 df-flim 23861 df-flf 23862 df-tsms 24049 df-xms 24244 df-ms 24245 df-0p 25617 df-limc 25813 df-dv 25814 df-dvn 25815 df-ply 26140 df-idp 26141 df-coe 26142 df-dgr 26143 df-tayl 26307

This theorem is referenced by: (None)

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