tayl0 - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > tayl0		Structured version Visualization version GIF version

Theorem tayl0 25874

Description: The Taylor series is always defined at the basepoint, with value equal to the value of the function. (Contributed by Mario Carneiro, 30-Dec-2016.)

**Hypotheses**
Ref	Expression
taylfval.s	⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
taylfval.f	⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
taylfval.a	⊢ (𝜑 → 𝐴 ⊆ 𝑆)
taylfval.n	⊢ (𝜑 → (𝑁 ∈ ℕ₀ ∨ 𝑁 = +∞))
taylfval.b	⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑘))
taylfval.t	⊢ 𝑇 = (𝑁(𝑆 Tayl 𝐹)𝐵)

**Assertion**
Ref	Expression
tayl0	⊢ (𝜑 → (𝐵 ∈ dom 𝑇 ∧ (𝑇‘𝐵) = (𝐹‘𝐵)))

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

**Proof of Theorem tayl0**
Step	Hyp	Ref	Expression
1		taylfval.a	. . . . 5 ⊢ (𝜑 → 𝐴 ⊆ 𝑆)
2		taylfval.s	. . . . . 6 ⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
3		recnprss 25421	. . . . . 6 ⊢ (𝑆 ∈ {ℝ, ℂ} → 𝑆 ⊆ ℂ)
4	2, 3	syl 17	. . . . 5 ⊢ (𝜑 → 𝑆 ⊆ ℂ)
5	1, 4	sstrd 3993	. . . 4 ⊢ (𝜑 → 𝐴 ⊆ ℂ)
6		fveq2 6892	. . . . . . . 8 ⊢ (𝑘 = 0 → ((𝑆 D^𝑛 𝐹)‘𝑘) = ((𝑆 D^𝑛 𝐹)‘0))
7	6	dmeqd 5906	. . . . . . 7 ⊢ (𝑘 = 0 → dom ((𝑆 D^𝑛 𝐹)‘𝑘) = dom ((𝑆 D^𝑛 𝐹)‘0))
8	7	eleq2d 2820	. . . . . 6 ⊢ (𝑘 = 0 → (𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑘) ↔ 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘0)))
9		taylfval.b	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑘))
10	9	ralrimiva 3147	. . . . . 6 ⊢ (𝜑 → ∀𝑘 ∈ ((0[,]𝑁) ∩ ℤ)𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑘))
11		taylfval.n	. . . . . . . 8 ⊢ (𝜑 → (𝑁 ∈ ℕ₀ ∨ 𝑁 = +∞))
12		elxnn0 12546	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ₀^* ↔ (𝑁 ∈ ℕ₀ ∨ 𝑁 = +∞))
13		0xr 11261	. . . . . . . . . . 11 ⊢ 0 ∈ ℝ^*
14	13	a1i 11	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ₀^* → 0 ∈ ℝ^*)
15		xnn0xr 12549	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ₀^* → 𝑁 ∈ ℝ^*)
16		xnn0ge0 13113	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ₀^* → 0 ≤ 𝑁)
17		lbicc2 13441	. . . . . . . . . 10 ⊢ ((0 ∈ ℝ^* ∧ 𝑁 ∈ ℝ^* ∧ 0 ≤ 𝑁) → 0 ∈ (0[,]𝑁))
18	14, 15, 16, 17	syl3anc 1372	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ₀^* → 0 ∈ (0[,]𝑁))
19	12, 18	sylbir 234	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ₀ ∨ 𝑁 = +∞) → 0 ∈ (0[,]𝑁))
20	11, 19	syl 17	. . . . . . 7 ⊢ (𝜑 → 0 ∈ (0[,]𝑁))
21		0zd 12570	. . . . . . 7 ⊢ (𝜑 → 0 ∈ ℤ)
22	20, 21	elind 4195	. . . . . 6 ⊢ (𝜑 → 0 ∈ ((0[,]𝑁) ∩ ℤ))
23	8, 10, 22	rspcdva 3614	. . . . 5 ⊢ (𝜑 → 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘0))
24		cnex 11191	. . . . . . . . . 10 ⊢ ℂ ∈ V
25	24	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → ℂ ∈ V)
26		taylfval.f	. . . . . . . . 9 ⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
27		elpm2r 8839	. . . . . . . . 9 ⊢ (((ℂ ∈ V ∧ 𝑆 ∈ {ℝ, ℂ}) ∧ (𝐹:𝐴⟶ℂ ∧ 𝐴 ⊆ 𝑆)) → 𝐹 ∈ (ℂ ↑_pm 𝑆))
28	25, 2, 26, 1, 27	syl22anc 838	. . . . . . . 8 ⊢ (𝜑 → 𝐹 ∈ (ℂ ↑_pm 𝑆))
29		dvn0 25441	. . . . . . . 8 ⊢ ((𝑆 ⊆ ℂ ∧ 𝐹 ∈ (ℂ ↑_pm 𝑆)) → ((𝑆 D^𝑛 𝐹)‘0) = 𝐹)
30	4, 28, 29	syl2anc 585	. . . . . . 7 ⊢ (𝜑 → ((𝑆 D^𝑛 𝐹)‘0) = 𝐹)
31	30	dmeqd 5906	. . . . . 6 ⊢ (𝜑 → dom ((𝑆 D^𝑛 𝐹)‘0) = dom 𝐹)
32	26	fdmd 6729	. . . . . 6 ⊢ (𝜑 → dom 𝐹 = 𝐴)
33	31, 32	eqtrd 2773	. . . . 5 ⊢ (𝜑 → dom ((𝑆 D^𝑛 𝐹)‘0) = 𝐴)
34	23, 33	eleqtrd 2836	. . . 4 ⊢ (𝜑 → 𝐵 ∈ 𝐴)
35	5, 34	sseldd 3984	. . 3 ⊢ (𝜑 → 𝐵 ∈ ℂ)
36		cnfldbas 20948	. . . . . . 7 ⊢ ℂ = (Base‘ℂ_fld)
37		cnfld0 20969	. . . . . . 7 ⊢ 0 = (0_g‘ℂ_fld)
38		cnring 20967	. . . . . . . 8 ⊢ ℂ_fld ∈ Ring
39		ringmnd 20066	. . . . . . . 8 ⊢ (ℂ_fld ∈ Ring → ℂ_fld ∈ Mnd)
40	38, 39	mp1i 13	. . . . . . 7 ⊢ (𝜑 → ℂ_fld ∈ Mnd)
41		ovex 7442	. . . . . . . . 9 ⊢ (0[,]𝑁) ∈ V
42	41	inex1 5318	. . . . . . . 8 ⊢ ((0[,]𝑁) ∩ ℤ) ∈ V
43	42	a1i 11	. . . . . . 7 ⊢ (𝜑 → ((0[,]𝑁) ∩ ℤ) ∈ V)
44	2	adantr 482	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 𝑆 ∈ {ℝ, ℂ})
45	28	adantr 482	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 𝐹 ∈ (ℂ ↑_pm 𝑆))
46		simpr 486	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 𝑘 ∈ ((0[,]𝑁) ∩ ℤ))
47	46	elin2d 4200	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 𝑘 ∈ ℤ)
48	46	elin1d 4199	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 𝑘 ∈ (0[,]𝑁))
49		nn0re 12481	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑁 ∈ ℕ₀ → 𝑁 ∈ ℝ)
50	49	rexrd 11264	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑁 ∈ ℕ₀ → 𝑁 ∈ ℝ^*)
51		id 22	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑁 = +∞ → 𝑁 = +∞)
52		pnfxr 11268	. . . . . . . . . . . . . . . . . . . 20 ⊢ +∞ ∈ ℝ^*
53	51, 52	eqeltrdi 2842	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑁 = +∞ → 𝑁 ∈ ℝ^*)
54	50, 53	jaoi 856	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑁 ∈ ℕ₀ ∨ 𝑁 = +∞) → 𝑁 ∈ ℝ^*)
55	11, 54	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → 𝑁 ∈ ℝ^*)
56	55	adantr 482	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 𝑁 ∈ ℝ^*)
57		elicc1 13368	. . . . . . . . . . . . . . . 16 ⊢ ((0 ∈ ℝ^* ∧ 𝑁 ∈ ℝ^) → (𝑘 ∈ (0[,]𝑁) ↔ (𝑘 ∈ ℝ^ ∧ 0 ≤ 𝑘 ∧ 𝑘 ≤ 𝑁)))
58	13, 56, 57	sylancr 588	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → (𝑘 ∈ (0[,]𝑁) ↔ (𝑘 ∈ ℝ^* ∧ 0 ≤ 𝑘 ∧ 𝑘 ≤ 𝑁)))
59	48, 58	mpbid 231	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → (𝑘 ∈ ℝ^* ∧ 0 ≤ 𝑘 ∧ 𝑘 ≤ 𝑁))
60	59	simp2d 1144	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 0 ≤ 𝑘)
61		elnn0z 12571	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ₀ ↔ (𝑘 ∈ ℤ ∧ 0 ≤ 𝑘))
62	47, 60, 61	sylanbrc 584	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 𝑘 ∈ ℕ₀)
63		dvnf 25444	. . . . . . . . . . . 12 ⊢ ((𝑆 ∈ {ℝ, ℂ} ∧ 𝐹 ∈ (ℂ ↑_pm 𝑆) ∧ 𝑘 ∈ ℕ₀) → ((𝑆 D^𝑛 𝐹)‘𝑘):dom ((𝑆 D^𝑛 𝐹)‘𝑘)⟶ℂ)
64	44, 45, 62, 63	syl3anc 1372	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → ((𝑆 D^𝑛 𝐹)‘𝑘):dom ((𝑆 D^𝑛 𝐹)‘𝑘)⟶ℂ)
65	64, 9	ffvelcdmd 7088	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → (((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) ∈ ℂ)
66	62	faccld 14244	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → (!‘𝑘) ∈ ℕ)
67	66	nncnd 12228	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → (!‘𝑘) ∈ ℂ)
68	66	nnne0d 12262	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → (!‘𝑘) ≠ 0)
69	65, 67, 68	divcld 11990	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → ((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) ∈ ℂ)
70		0cnd 11207	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → 0 ∈ ℂ)
71	70, 62	expcld 14111	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → (0↑𝑘) ∈ ℂ)
72	69, 71	mulcld 11234	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)) ∈ ℂ)
73	72	fmpttd 7115	. . . . . . 7 ⊢ (𝜑 → (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))):((0[,]𝑁) ∩ ℤ)⟶ℂ)
74		eldifi 4127	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ (((0[,]𝑁) ∩ ℤ) ∖ {0}) → 𝑘 ∈ ((0[,]𝑁) ∩ ℤ))
75	74, 62	sylan2 594	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ (((0[,]𝑁) ∩ ℤ) ∖ {0})) → 𝑘 ∈ ℕ₀)
76		eldifsni 4794	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ (((0[,]𝑁) ∩ ℤ) ∖ {0}) → 𝑘 ≠ 0)
77	76	adantl 483	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ (((0[,]𝑁) ∩ ℤ) ∖ {0})) → 𝑘 ≠ 0)
78		elnnne0 12486	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ ℕ ↔ (𝑘 ∈ ℕ₀ ∧ 𝑘 ≠ 0))
79	75, 77, 78	sylanbrc 584	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ (((0[,]𝑁) ∩ ℤ) ∖ {0})) → 𝑘 ∈ ℕ)
80	79	0expd 14104	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ (((0[,]𝑁) ∩ ℤ) ∖ {0})) → (0↑𝑘) = 0)
81	80	oveq2d 7425	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ (((0[,]𝑁) ∩ ℤ) ∖ {0})) → (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)) = (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · 0))
82	69	mul01d 11413	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ((0[,]𝑁) ∩ ℤ)) → (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · 0) = 0)
83	74, 82	sylan2 594	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ (((0[,]𝑁) ∩ ℤ) ∖ {0})) → (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · 0) = 0)
84	81, 83	eqtrd 2773	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ (((0[,]𝑁) ∩ ℤ) ∖ {0})) → (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)) = 0)
85		zex 12567	. . . . . . . . . 10 ⊢ ℤ ∈ V
86	85	inex2 5319	. . . . . . . . 9 ⊢ ((0[,]𝑁) ∩ ℤ) ∈ V
87	86	a1i 11	. . . . . . . 8 ⊢ (𝜑 → ((0[,]𝑁) ∩ ℤ) ∈ V)
88	84, 87	suppss2 8185	. . . . . . 7 ⊢ (𝜑 → ((𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))) supp 0) ⊆ {0})
89	36, 37, 40, 43, 22, 73, 88	gsumpt 19830	. . . . . 6 ⊢ (𝜑 → (ℂ_fld Σ_g (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))) = ((𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))‘0))
90	6	fveq1d 6894	. . . . . . . . . 10 ⊢ (𝑘 = 0 → (((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) = (((𝑆 D^𝑛 𝐹)‘0)‘𝐵))
91		fveq2 6892	. . . . . . . . . . 11 ⊢ (𝑘 = 0 → (!‘𝑘) = (!‘0))
92		fac0 14236	. . . . . . . . . . 11 ⊢ (!‘0) = 1
93	91, 92	eqtrdi 2789	. . . . . . . . . 10 ⊢ (𝑘 = 0 → (!‘𝑘) = 1)
94	90, 93	oveq12d 7427	. . . . . . . . 9 ⊢ (𝑘 = 0 → ((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) = ((((𝑆 D^𝑛 𝐹)‘0)‘𝐵) / 1))
95		oveq2 7417	. . . . . . . . . 10 ⊢ (𝑘 = 0 → (0↑𝑘) = (0↑0))
96		0exp0e1 14032	. . . . . . . . . 10 ⊢ (0↑0) = 1
97	95, 96	eqtrdi 2789	. . . . . . . . 9 ⊢ (𝑘 = 0 → (0↑𝑘) = 1)
98	94, 97	oveq12d 7427	. . . . . . . 8 ⊢ (𝑘 = 0 → (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)) = (((((𝑆 D^𝑛 𝐹)‘0)‘𝐵) / 1) · 1))
99		eqid 2733	. . . . . . . 8 ⊢ (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))) = (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))
100		ovex 7442	. . . . . . . 8 ⊢ (((((𝑆 D^𝑛 𝐹)‘0)‘𝐵) / 1) · 1) ∈ V
101	98, 99, 100	fvmpt 6999	. . . . . . 7 ⊢ (0 ∈ ((0[,]𝑁) ∩ ℤ) → ((𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))‘0) = (((((𝑆 D^𝑛 𝐹)‘0)‘𝐵) / 1) · 1))
102	22, 101	syl 17	. . . . . 6 ⊢ (𝜑 → ((𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))‘0) = (((((𝑆 D^𝑛 𝐹)‘0)‘𝐵) / 1) · 1))
103	30	fveq1d 6894	. . . . . . . . . 10 ⊢ (𝜑 → (((𝑆 D^𝑛 𝐹)‘0)‘𝐵) = (𝐹‘𝐵))
104	103	oveq1d 7424	. . . . . . . . 9 ⊢ (𝜑 → ((((𝑆 D^𝑛 𝐹)‘0)‘𝐵) / 1) = ((𝐹‘𝐵) / 1))
105	26, 34	ffvelcdmd 7088	. . . . . . . . . 10 ⊢ (𝜑 → (𝐹‘𝐵) ∈ ℂ)
106	105	div1d 11982	. . . . . . . . 9 ⊢ (𝜑 → ((𝐹‘𝐵) / 1) = (𝐹‘𝐵))
107	104, 106	eqtrd 2773	. . . . . . . 8 ⊢ (𝜑 → ((((𝑆 D^𝑛 𝐹)‘0)‘𝐵) / 1) = (𝐹‘𝐵))
108	107	oveq1d 7424	. . . . . . 7 ⊢ (𝜑 → (((((𝑆 D^𝑛 𝐹)‘0)‘𝐵) / 1) · 1) = ((𝐹‘𝐵) · 1))
109	105	mulridd 11231	. . . . . . 7 ⊢ (𝜑 → ((𝐹‘𝐵) · 1) = (𝐹‘𝐵))
110	108, 109	eqtrd 2773	. . . . . 6 ⊢ (𝜑 → (((((𝑆 D^𝑛 𝐹)‘0)‘𝐵) / 1) · 1) = (𝐹‘𝐵))
111	89, 102, 110	3eqtrd 2777	. . . . 5 ⊢ (𝜑 → (ℂ_fld Σ_g (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))) = (𝐹‘𝐵))
112		ringcmn 20099	. . . . . . 7 ⊢ (ℂ_fld ∈ Ring → ℂ_fld ∈ CMnd)
113	38, 112	mp1i 13	. . . . . 6 ⊢ (𝜑 → ℂ_fld ∈ CMnd)
114		cnfldtps 24294	. . . . . . 7 ⊢ ℂ_fld ∈ TopSp
115	114	a1i 11	. . . . . 6 ⊢ (𝜑 → ℂ_fld ∈ TopSp)
116		mptexg 7223	. . . . . . . 8 ⊢ (((0[,]𝑁) ∩ ℤ) ∈ V → (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))) ∈ V)
117	86, 116	mp1i 13	. . . . . . 7 ⊢ (𝜑 → (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))) ∈ V)
118		funmpt 6587	. . . . . . . 8 ⊢ Fun (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))
119	118	a1i 11	. . . . . . 7 ⊢ (𝜑 → Fun (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))))
120		c0ex 11208	. . . . . . . 8 ⊢ 0 ∈ V
121	120	a1i 11	. . . . . . 7 ⊢ (𝜑 → 0 ∈ V)
122		snfi 9044	. . . . . . . 8 ⊢ {0} ∈ Fin
123	122	a1i 11	. . . . . . 7 ⊢ (𝜑 → {0} ∈ Fin)
124		suppssfifsupp 9378	. . . . . . 7 ⊢ ((((𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))) ∈ V ∧ Fun (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))) ∧ 0 ∈ V) ∧ ({0} ∈ Fin ∧ ((𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))) supp 0) ⊆ {0})) → (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))) finSupp 0)
125	117, 119, 121, 123, 88, 124	syl32anc 1379	. . . . . 6 ⊢ (𝜑 → (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))) finSupp 0)
126	36, 37, 113, 115, 43, 73, 125	tsmsid 23644	. . . . 5 ⊢ (𝜑 → (ℂ_fld Σ_g (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))) ∈ (ℂ_fld tsums (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))))
127	111, 126	eqeltrrd 2835	. . . 4 ⊢ (𝜑 → (𝐹‘𝐵) ∈ (ℂ_fld tsums (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))))
128	35	subidd 11559	. . . . . . . 8 ⊢ (𝜑 → (𝐵 − 𝐵) = 0)
129	128	oveq1d 7424	. . . . . . 7 ⊢ (𝜑 → ((𝐵 − 𝐵)↑𝑘) = (0↑𝑘))
130	129	oveq2d 7425	. . . . . 6 ⊢ (𝜑 → (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝐵 − 𝐵)↑𝑘)) = (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))
131	130	mpteq2dv 5251	. . . . 5 ⊢ (𝜑 → (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝐵 − 𝐵)↑𝑘))) = (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘))))
132	131	oveq2d 7425	. . . 4 ⊢ (𝜑 → (ℂ_fld tsums (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝐵 − 𝐵)↑𝑘)))) = (ℂ_fld tsums (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · (0↑𝑘)))))
133	127, 132	eleqtrrd 2837	. . 3 ⊢ (𝜑 → (𝐹‘𝐵) ∈ (ℂ_fld tsums (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝐵 − 𝐵)↑𝑘)))))
134		taylfval.t	. . . 4 ⊢ 𝑇 = (𝑁(𝑆 Tayl 𝐹)𝐵)
135	2, 26, 1, 11, 9, 134	eltayl 25872	. . 3 ⊢ (𝜑 → (𝐵𝑇(𝐹‘𝐵) ↔ (𝐵 ∈ ℂ ∧ (𝐹‘𝐵) ∈ (ℂ_fld tsums (𝑘 ∈ ((0[,]𝑁) ∩ ℤ) ↦ (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝐵 − 𝐵)↑𝑘)))))))
136	35, 133, 135	mpbir2and 712	. 2 ⊢ (𝜑 → 𝐵𝑇(𝐹‘𝐵))
137	2, 26, 1, 11, 9, 134	taylf 25873	. . 3 ⊢ (𝜑 → 𝑇:dom 𝑇⟶ℂ)
138		ffun 6721	. . 3 ⊢ (𝑇:dom 𝑇⟶ℂ → Fun 𝑇)
139		funbrfv2b 6950	. . 3 ⊢ (Fun 𝑇 → (𝐵𝑇(𝐹‘𝐵) ↔ (𝐵 ∈ dom 𝑇 ∧ (𝑇‘𝐵) = (𝐹‘𝐵))))
140	137, 138, 139	3syl 18	. 2 ⊢ (𝜑 → (𝐵𝑇(𝐹‘𝐵) ↔ (𝐵 ∈ dom 𝑇 ∧ (𝑇‘𝐵) = (𝐹‘𝐵))))
141	136, 140	mpbid 231	1 ⊢ (𝜑 → (𝐵 ∈ dom 𝑇 ∧ (𝑇‘𝐵) = (𝐹‘𝐵)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∨ wo 846 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 ≠ wne 2941 Vcvv 3475 ∖ cdif 3946 ∩ cin 3948 ⊆ wss 3949 {csn 4629 {cpr 4631 class class class wbr 5149 ↦ cmpt 5232 dom cdm 5677 Fun wfun 6538 ⟶wf 6540 ‘cfv 6544 (class class class)co 7409 supp csupp 8146 ↑_pm cpm 8821 Fincfn 8939 finSupp cfsupp 9361 ℂcc 11108 ℝcr 11109 0cc0 11110 1c1 11111 · cmul 11115 +∞cpnf 11245 ℝ^*cxr 11247 ≤ cle 11249 − cmin 11444 / cdiv 11871 ℕcn 12212 ℕ₀cn0 12472 ℕ₀^*cxnn0 12544 ℤcz 12558 [,]cicc 13327 ↑cexp 14027 !cfa 14233 Σ_g cgsu 17386 Mndcmnd 18625 CMndccmn 19648 Ringcrg 20056 ℂ_fldccnfld 20944 TopSpctps 22434 tsums ctsu 23630 D^𝑛 cdvn 25381 Tayl ctayl 25865

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-inf2 9636 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187 ax-pre-sup 11188 ax-addf 11189 ax-mulf 11190

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4910 df-int 4952 df-iun 5000 df-iin 5001 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-se 5633 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-isom 6553 df-riota 7365 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7856 df-1st 7975 df-2nd 7976 df-supp 8147 df-frecs 8266 df-wrecs 8297 df-recs 8371 df-rdg 8410 df-1o 8466 df-er 8703 df-map 8822 df-pm 8823 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-fsupp 9362 df-fi 9406 df-sup 9437 df-inf 9438 df-oi 9505 df-card 9934 df-pnf 11250 df-mnf 11251 df-xr 11252 df-ltxr 11253 df-le 11254 df-sub 11446 df-neg 11447 df-div 11872 df-nn 12213 df-2 12275 df-3 12276 df-4 12277 df-5 12278 df-6 12279 df-7 12280 df-8 12281 df-9 12282 df-n0 12473 df-xnn0 12545 df-z 12559 df-dec 12678 df-uz 12823 df-q 12933 df-rp 12975 df-xneg 13092 df-xadd 13093 df-xmul 13094 df-icc 13331 df-fz 13485 df-fzo 13628 df-seq 13967 df-exp 14028 df-fac 14234 df-hash 14291 df-cj 15046 df-re 15047 df-im 15048 df-sqrt 15182 df-abs 15183 df-struct 17080 df-sets 17097 df-slot 17115 df-ndx 17127 df-base 17145 df-ress 17174 df-plusg 17210 df-mulr 17211 df-starv 17212 df-tset 17216 df-ple 17217 df-ds 17219 df-unif 17220 df-rest 17368 df-topn 17369 df-0g 17387 df-gsum 17388 df-topgen 17389 df-mre 17530 df-mrc 17531 df-acs 17533 df-mgm 18561 df-sgrp 18610 df-mnd 18626 df-submnd 18672 df-grp 18822 df-minusg 18823 df-mulg 18951 df-cntz 19181 df-cmn 19650 df-abl 19651 df-mgp 19988 df-ur 20005 df-ring 20058 df-cring 20059 df-psmet 20936 df-xmet 20937 df-met 20938 df-bl 20939 df-mopn 20940 df-fbas 20941 df-fg 20942 df-cnfld 20945 df-top 22396 df-topon 22413 df-topsp 22435 df-bases 22449 df-cld 22523 df-ntr 22524 df-cls 22525 df-nei 22602 df-lp 22640 df-perf 22641 df-cnp 22732 df-haus 22819 df-fil 23350 df-fm 23442 df-flim 23443 df-flf 23444 df-tsms 23631 df-xms 23826 df-ms 23827 df-limc 25383 df-dv 25384 df-dvn 25385 df-tayl 25867

This theorem is referenced by: dvntaylp0 25884

W3C validator