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Theorem abelth2 25506

Description: Abel's theorem, restricted to the [0, 1] interval. (Contributed by Mario Carneiro, 2-Apr-2015.)

**Hypotheses**
Ref	Expression
abelth2.1	⊢ (𝜑 → 𝐴:ℕ₀⟶ℂ)
abelth2.2	⊢ (𝜑 → seq0( + , 𝐴) ∈ dom ⇝ )
abelth2.3	⊢ 𝐹 = (𝑥 ∈ (0[,]1) ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛)))

**Assertion**
Ref	Expression
abelth2	⊢ (𝜑 → 𝐹 ∈ ((0[,]1)–cn→ℂ))

Distinct variable groups: 𝑥,𝑛,𝐴 𝜑,𝑛,𝑥 Allowed substitution hints: 𝐹(𝑥,𝑛)

Proof of Theorem abelth2 Dummy variable 𝑧 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		unitssre 13160	. . . . . . 7 ⊢ (0[,]1) ⊆ ℝ
2		ax-resscn 10859	. . . . . . 7 ⊢ ℝ ⊆ ℂ
3	1, 2	sstri 3926	. . . . . 6 ⊢ (0[,]1) ⊆ ℂ
4	3	a1i 11	. . . . 5 ⊢ (𝜑 → (0[,]1) ⊆ ℂ)
5		1re 10906	. . . . . . . 8 ⊢ 1 ∈ ℝ
6		simpr 484	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → 𝑧 ∈ (0[,]1))
7		elicc01 13127	. . . . . . . . . 10 ⊢ (𝑧 ∈ (0[,]1) ↔ (𝑧 ∈ ℝ ∧ 0 ≤ 𝑧 ∧ 𝑧 ≤ 1))
8	6, 7	sylib 217	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (𝑧 ∈ ℝ ∧ 0 ≤ 𝑧 ∧ 𝑧 ≤ 1))
9	8	simp1d 1140	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → 𝑧 ∈ ℝ)
10		resubcl 11215	. . . . . . . 8 ⊢ ((1 ∈ ℝ ∧ 𝑧 ∈ ℝ) → (1 − 𝑧) ∈ ℝ)
11	5, 9, 10	sylancr 586	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (1 − 𝑧) ∈ ℝ)
12	11	leidd 11471	. . . . . 6 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (1 − 𝑧) ≤ (1 − 𝑧))
13		1red 10907	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → 1 ∈ ℝ)
14	8	simp3d 1142	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → 𝑧 ≤ 1)
15	9, 13, 14	abssubge0d 15071	. . . . . 6 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (abs‘(1 − 𝑧)) = (1 − 𝑧))
16	8	simp2d 1141	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → 0 ≤ 𝑧)
17	9, 16	absidd 15062	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (abs‘𝑧) = 𝑧)
18	17	oveq2d 7271	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (1 − (abs‘𝑧)) = (1 − 𝑧))
19	18	oveq2d 7271	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (1 · (1 − (abs‘𝑧))) = (1 · (1 − 𝑧)))
20	11	recnd 10934	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (1 − 𝑧) ∈ ℂ)
21	20	mulid2d 10924	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (1 · (1 − 𝑧)) = (1 − 𝑧))
22	19, 21	eqtrd 2778	. . . . . 6 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (1 · (1 − (abs‘𝑧))) = (1 − 𝑧))
23	12, 15, 22	3brtr4d 5102	. . . . 5 ⊢ ((𝜑 ∧ 𝑧 ∈ (0[,]1)) → (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧))))
24	4, 23	ssrabdv 4003	. . . 4 ⊢ (𝜑 → (0[,]1) ⊆ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))})
25	24	resmptd 5937	. . 3 ⊢ (𝜑 → ((𝑥 ∈ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛))) ↾ (0[,]1)) = (𝑥 ∈ (0[,]1) ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛))))
26		abelth2.3	. . 3 ⊢ 𝐹 = (𝑥 ∈ (0[,]1) ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛)))
27	25, 26	eqtr4di 2797	. 2 ⊢ (𝜑 → ((𝑥 ∈ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛))) ↾ (0[,]1)) = 𝐹)
28		abelth2.1	. . . 4 ⊢ (𝜑 → 𝐴:ℕ₀⟶ℂ)
29		abelth2.2	. . . 4 ⊢ (𝜑 → seq0( + , 𝐴) ∈ dom ⇝ )
30		1red 10907	. . . 4 ⊢ (𝜑 → 1 ∈ ℝ)
31		0le1 11428	. . . . 5 ⊢ 0 ≤ 1
32	31	a1i 11	. . . 4 ⊢ (𝜑 → 0 ≤ 1)
33		eqid 2738	. . . 4 ⊢ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} = {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))}
34		eqid 2738	. . . 4 ⊢ (𝑥 ∈ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛))) = (𝑥 ∈ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛)))
35	28, 29, 30, 32, 33, 34	abelth 25505	. . 3 ⊢ (𝜑 → (𝑥 ∈ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛))) ∈ ({𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))}–cn→ℂ))
36		rescncf 23966	. . 3 ⊢ ((0[,]1) ⊆ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} → ((𝑥 ∈ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛))) ∈ ({𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))}–cn→ℂ) → ((𝑥 ∈ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛))) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ)))
37	24, 35, 36	sylc 65	. 2 ⊢ (𝜑 → ((𝑥 ∈ {𝑧 ∈ ℂ ∣ (abs‘(1 − 𝑧)) ≤ (1 · (1 − (abs‘𝑧)))} ↦ Σ𝑛 ∈ ℕ₀ ((𝐴‘𝑛) · (𝑥↑𝑛))) ↾ (0[,]1)) ∈ ((0[,]1)–cn→ℂ))
38	27, 37	eqeltrrd 2840	1 ⊢ (𝜑 → 𝐹 ∈ ((0[,]1)–cn→ℂ))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 {crab 3067 ⊆ wss 3883 class class class wbr 5070 ↦ cmpt 5153 dom cdm 5580 ↾ cres 5582 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 ℂcc 10800 ℝcr 10801 0cc0 10802 1c1 10803 + caddc 10805 · cmul 10807 ≤ cle 10941 − cmin 11135 ℕ₀cn0 12163 [,]cicc 13011 seqcseq 13649 ↑cexp 13710 abscabs 14873 ⇝ cli 15121 Σcsu 15325 –cn→ccncf 23945

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 ax-addf 10881 ax-mulf 10882

This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-iin 4924 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-of 7511 df-om 7688 df-1st 7804 df-2nd 7805 df-supp 7949 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-2o 8268 df-er 8456 df-map 8575 df-pm 8576 df-ixp 8644 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-fsupp 9059 df-fi 9100 df-sup 9131 df-inf 9132 df-oi 9199 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-4 11968 df-5 11969 df-6 11970 df-7 11971 df-8 11972 df-9 11973 df-n0 12164 df-z 12250 df-dec 12367 df-uz 12512 df-q 12618 df-rp 12660 df-xneg 12777 df-xadd 12778 df-xmul 12779 df-ico 13014 df-icc 13015 df-fz 13169 df-fzo 13312 df-fl 13440 df-seq 13650 df-exp 13711 df-hash 13973 df-shft 14706 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-limsup 15108 df-clim 15125 df-rlim 15126 df-sum 15326 df-struct 16776 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-ress 16868 df-plusg 16901 df-mulr 16902 df-starv 16903 df-sca 16904 df-vsca 16905 df-ip 16906 df-tset 16907 df-ple 16908 df-ds 16910 df-unif 16911 df-hom 16912 df-cco 16913 df-rest 17050 df-topn 17051 df-0g 17069 df-gsum 17070 df-topgen 17071 df-pt 17072 df-prds 17075 df-xrs 17130 df-qtop 17135 df-imas 17136 df-xps 17138 df-mre 17212 df-mrc 17213 df-acs 17215 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-submnd 18346 df-mulg 18616 df-cntz 18838 df-cmn 19303 df-psmet 20502 df-xmet 20503 df-met 20504 df-bl 20505 df-mopn 20506 df-cnfld 20511 df-top 21951 df-topon 21968 df-topsp 21990 df-bases 22004 df-cld 22078 df-ntr 22079 df-cn 22286 df-cnp 22287 df-t1 22373 df-haus 22374 df-tx 22621 df-hmeo 22814 df-xms 23381 df-ms 23382 df-tms 23383 df-cncf 23947 df-ulm 25441

This theorem is referenced by: leibpi 25997

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