geoserap - Intuitionistic Logic Explorer

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Theorem geoserap 11644

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 9249	. . . 4 ⊢ 0 ∈ ℕ₀
4	3	a1i 9	. . 3 ⊢ (𝜑 → 0 ∈ ℕ₀)
5		geoser.3	. . . 4 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
6		nn0uz 9621	. . . 4 ⊢ ℕ₀ = (ℤ_≥‘0)
7	5, 6	eleqtrdi 2286	. . 3 ⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘0))
8	1, 2, 4, 7	geosergap 11643	. 2 ⊢ (𝜑 → Σ𝑘 ∈ (0..^𝑁)(𝐴↑𝑘) = (((𝐴↑0) − (𝐴↑𝑁)) / (1 − 𝐴)))
9	5	nn0zd 9431	. . . 4 ⊢ (𝜑 → 𝑁 ∈ ℤ)
10		fzoval 10208	. . . 4 ⊢ (𝑁 ∈ ℤ → (0..^𝑁) = (0...(𝑁 − 1)))
11	9, 10	syl 14	. . 3 ⊢ (𝜑 → (0..^𝑁) = (0...(𝑁 − 1)))
12	11	sumeq1d 11503	. 2 ⊢ (𝜑 → Σ𝑘 ∈ (0..^𝑁)(𝐴↑𝑘) = Σ𝑘 ∈ (0...(𝑁 − 1))(𝐴↑𝑘))
13	1	exp0d 10732	. . . 4 ⊢ (𝜑 → (𝐴↑0) = 1)
14	13	oveq1d 5929	. . 3 ⊢ (𝜑 → ((𝐴↑0) − (𝐴↑𝑁)) = (1 − (𝐴↑𝑁)))
15	14	oveq1d 5929	. 2 ⊢ (𝜑 → (((𝐴↑0) − (𝐴↑𝑁)) / (1 − 𝐴)) = ((1 − (𝐴↑𝑁)) / (1 − 𝐴)))
16	8, 12, 15	3eqtr3d 2234	1 ⊢ (𝜑 → Σ𝑘 ∈ (0...(𝑁 − 1))(𝐴↑𝑘) = ((1 − (𝐴↑𝑁)) / (1 − 𝐴)))

Colors of variables: wff set class

Syntax hints: → wi 4 = wceq 1364 ∈ wcel 2164 class class class wbr 4029 ‘cfv 5250 (class class class)co 5914 ℂcc 7864 0cc0 7866 1c1 7867 − cmin 8184 # cap 8594 / cdiv 8685 ℕ₀cn0 9234 ℤcz 9311 ℤ_≥cuz 9586 ...cfz 10068 ..^cfzo 10202 ↑cexp 10603 Σcsu 11490

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-coll 4144 ax-sep 4147 ax-nul 4155 ax-pow 4203 ax-pr 4238 ax-un 4462 ax-setind 4567 ax-iinf 4618 ax-cnex 7957 ax-resscn 7958 ax-1cn 7959 ax-1re 7960 ax-icn 7961 ax-addcl 7962 ax-addrcl 7963 ax-mulcl 7964 ax-mulrcl 7965 ax-addcom 7966 ax-mulcom 7967 ax-addass 7968 ax-mulass 7969 ax-distr 7970 ax-i2m1 7971 ax-0lt1 7972 ax-1rid 7973 ax-0id 7974 ax-rnegex 7975 ax-precex 7976 ax-cnre 7977 ax-pre-ltirr 7978 ax-pre-ltwlin 7979 ax-pre-lttrn 7980 ax-pre-apti 7981 ax-pre-ltadd 7982 ax-pre-mulgt0 7983 ax-pre-mulext 7984 ax-arch 7985 ax-caucvg 7986

This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-nel 2460 df-ral 2477 df-rex 2478 df-reu 2479 df-rmo 2480 df-rab 2481 df-v 2762 df-sbc 2986 df-csb 3081 df-dif 3155 df-un 3157 df-in 3159 df-ss 3166 df-nul 3447 df-if 3558 df-pw 3603 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-int 3871 df-iun 3914 df-br 4030 df-opab 4091 df-mpt 4092 df-tr 4128 df-id 4322 df-po 4325 df-iso 4326 df-iord 4395 df-on 4397 df-ilim 4398 df-suc 4400 df-iom 4621 df-xp 4663 df-rel 4664 df-cnv 4665 df-co 4666 df-dm 4667 df-rn 4668 df-res 4669 df-ima 4670 df-iota 5211 df-fun 5252 df-fn 5253 df-f 5254 df-f1 5255 df-fo 5256 df-f1o 5257 df-fv 5258 df-isom 5259 df-riota 5869 df-ov 5917 df-oprab 5918 df-mpo 5919 df-1st 6188 df-2nd 6189 df-recs 6353 df-irdg 6418 df-frec 6439 df-1o 6464 df-oadd 6468 df-er 6582 df-en 6790 df-dom 6791 df-fin 6792 df-pnf 8050 df-mnf 8051 df-xr 8052 df-ltxr 8053 df-le 8054 df-sub 8186 df-neg 8187 df-reap 8588 df-ap 8595 df-div 8686 df-inn 8977 df-2 9035 df-3 9036 df-4 9037 df-n0 9235 df-z 9312 df-uz 9587 df-q 9679 df-rp 9714 df-fz 10069 df-fzo 10203 df-seqfrec 10513 df-exp 10604 df-ihash 10841 df-cj 10980 df-re 10981 df-im 10982 df-rsqrt 11136 df-abs 11137 df-clim 11416 df-sumdc 11491

This theorem is referenced by: pwm1geoserap1 11645 geolim 11648 geolim2 11649 geo2sum 11651 geo2sum2 11652

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