geoserap - Intuitionistic Logic Explorer

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Theorem geoserap 11448

Description: The value of the finite geometric series 1 + 𝐴↑1 + 𝐴↑2 +... + 𝐴↑(𝑁 − 1). This is Metamath 100 proof #66. (Contributed by NM, 12-May-2006.) (Revised by Jim Kingdon, 24-Oct-2022.)

**Hypotheses**
Ref	Expression
geoser.1	⊢ (𝜑 → 𝐴 ∈ ℂ)
geoser.2	⊢ (𝜑 → 𝐴 # 1)
geoser.3	⊢ (𝜑 → 𝑁 ∈ ℕ₀)

**Assertion**
Ref	Expression
geoserap	⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 − 1))(𝐴↑𝑘) = ((1 − (𝐴↑𝑁)) / (1 − 𝐴)))

Distinct variable groups: 𝐴,𝑘 𝑘,𝑁 𝜑,𝑘

**Proof of Theorem geoserap**
Step	Hyp	Ref	Expression
1		geoser.1	. . 3 ⊢ (𝜑 → 𝐴 ∈ ℂ)
2		geoser.2	. . 3 ⊢ (𝜑 → 𝐴 # 1)
3		0nn0 9129	. . . 4 ⊢ 0 ∈ ℕ₀
4	3	a1i 9	. . 3 ⊢ (𝜑 → 0 ∈ ℕ₀)
5		geoser.3	. . . 4 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
6		nn0uz 9500	. . . 4 ⊢ ℕ₀ = (ℤ_≥‘0)
7	5, 6	eleqtrdi 2259	. . 3 ⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘0))
8	1, 2, 4, 7	geosergap 11447	. 2 ⊢ (𝜑 → Σ𝑘 ∈ (0..^𝑁)(𝐴↑𝑘) = (((𝐴↑0) − (𝐴↑𝑁)) / (1 − 𝐴)))
9	5	nn0zd 9311	. . . 4 ⊢ (𝜑 → 𝑁 ∈ ℤ)
10		fzoval 10083	. . . 4 ⊢ (𝑁 ∈ ℤ → (0..^𝑁) = (0...(𝑁 − 1)))
11	9, 10	syl 14	. . 3 ⊢ (𝜑 → (0..^𝑁) = (0...(𝑁 − 1)))
12	11	sumeq1d 11307	. 2 ⊢ (𝜑 → Σ𝑘 ∈ (0..^𝑁)(𝐴↑𝑘) = Σ𝑘 ∈ (0...(𝑁 − 1))(𝐴↑𝑘))
13	1	exp0d 10582	. . . 4 ⊢ (𝜑 → (𝐴↑0) = 1)
14	13	oveq1d 5857	. . 3 ⊢ (𝜑 → ((𝐴↑0) − (𝐴↑𝑁)) = (1 − (𝐴↑𝑁)))
15	14	oveq1d 5857	. 2 ⊢ (𝜑 → (((𝐴↑0) − (𝐴↑𝑁)) / (1 − 𝐴)) = ((1 − (𝐴↑𝑁)) / (1 − 𝐴)))
16	8, 12, 15	3eqtr3d 2206	1 ⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 − 1))(𝐴↑𝑘) = ((1 − (𝐴↑𝑁)) / (1 − 𝐴)))

Colors of variables: wff set class

Syntax hints: → wi 4 = wceq 1343 ∈ wcel 2136 class class class wbr 3982 ‘cfv 5188 (class class class)co 5842 ℂcc 7751 0cc0 7753 1c1 7754 − cmin 8069 # cap 8479 / cdiv 8568 ℕ₀cn0 9114 ℤcz 9191 ℤ_≥cuz 9466 ...cfz 9944 ..^cfzo 10077 ↑cexp 10454 Σcsu 11294

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-coll 4097 ax-sep 4100 ax-nul 4108 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-iinf 4565 ax-cnex 7844 ax-resscn 7845 ax-1cn 7846 ax-1re 7847 ax-icn 7848 ax-addcl 7849 ax-addrcl 7850 ax-mulcl 7851 ax-mulrcl 7852 ax-addcom 7853 ax-mulcom 7854 ax-addass 7855 ax-mulass 7856 ax-distr 7857 ax-i2m1 7858 ax-0lt1 7859 ax-1rid 7860 ax-0id 7861 ax-rnegex 7862 ax-precex 7863 ax-cnre 7864 ax-pre-ltirr 7865 ax-pre-ltwlin 7866 ax-pre-lttrn 7867 ax-pre-apti 7868 ax-pre-ltadd 7869 ax-pre-mulgt0 7870 ax-pre-mulext 7871 ax-arch 7872 ax-caucvg 7873

This theorem depends on definitions: df-bi 116 df-dc 825 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-nel 2432 df-ral 2449 df-rex 2450 df-reu 2451 df-rmo 2452 df-rab 2453 df-v 2728 df-sbc 2952 df-csb 3046 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-nul 3410 df-if 3521 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-iun 3868 df-br 3983 df-opab 4044 df-mpt 4045 df-tr 4081 df-id 4271 df-po 4274 df-iso 4275 df-iord 4344 df-on 4346 df-ilim 4347 df-suc 4349 df-iom 4568 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-res 4616 df-ima 4617 df-iota 5153 df-fun 5190 df-fn 5191 df-f 5192 df-f1 5193 df-fo 5194 df-f1o 5195 df-fv 5196 df-isom 5197 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-1st 6108 df-2nd 6109 df-recs 6273 df-irdg 6338 df-frec 6359 df-1o 6384 df-oadd 6388 df-er 6501 df-en 6707 df-dom 6708 df-fin 6709 df-pnf 7935 df-mnf 7936 df-xr 7937 df-ltxr 7938 df-le 7939 df-sub 8071 df-neg 8072 df-reap 8473 df-ap 8480 df-div 8569 df-inn 8858 df-2 8916 df-3 8917 df-4 8918 df-n0 9115 df-z 9192 df-uz 9467 df-q 9558 df-rp 9590 df-fz 9945 df-fzo 10078 df-seqfrec 10381 df-exp 10455 df-ihash 10689 df-cj 10784 df-re 10785 df-im 10786 df-rsqrt 10940 df-abs 10941 df-clim 11220 df-sumdc 11295

This theorem is referenced by: pwm1geoserap1 11449 geolim 11452 geolim2 11453 geo2sum 11455 geo2sum2 11456

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