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Mirrors > Home > ILE Home > Th. List > iprodap0 | GIF version |
Description: Nonzero series product with an upper integer index set (i.e. an infinite product.) (Contributed by Scott Fenton, 6-Dec-2017.) |
Ref | Expression |
---|---|
zprodn0.1 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
zprodn0.2 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
zprodap0.3 | ⊢ (𝜑 → 𝑋 # 0) |
zprodn0.4 | ⊢ (𝜑 → seq𝑀( · , 𝐹) ⇝ 𝑋) |
iprodn0.5 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = 𝐵) |
iprodn0.6 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ ℂ) |
Ref | Expression |
---|---|
iprodap0 | ⊢ (𝜑 → ∏𝑘 ∈ 𝑍 𝐵 = 𝑋) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | zprodn0.1 | . 2 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
2 | zprodn0.2 | . 2 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
3 | zprodap0.3 | . 2 ⊢ (𝜑 → 𝑋 # 0) | |
4 | zprodn0.4 | . 2 ⊢ (𝜑 → seq𝑀( · , 𝐹) ⇝ 𝑋) | |
5 | orc 702 | . . . . 5 ⊢ (𝑗 ∈ 𝑍 → (𝑗 ∈ 𝑍 ∨ ¬ 𝑗 ∈ 𝑍)) | |
6 | df-dc 821 | . . . . 5 ⊢ (DECID 𝑗 ∈ 𝑍 ↔ (𝑗 ∈ 𝑍 ∨ ¬ 𝑗 ∈ 𝑍)) | |
7 | 5, 6 | sylibr 133 | . . . 4 ⊢ (𝑗 ∈ 𝑍 → DECID 𝑗 ∈ 𝑍) |
8 | 7 | rgen 2510 | . . 3 ⊢ ∀𝑗 ∈ 𝑍 DECID 𝑗 ∈ 𝑍 |
9 | 8 | a1i 9 | . 2 ⊢ (𝜑 → ∀𝑗 ∈ 𝑍 DECID 𝑗 ∈ 𝑍) |
10 | ssidd 3149 | . 2 ⊢ (𝜑 → 𝑍 ⊆ 𝑍) | |
11 | iprodn0.5 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = 𝐵) | |
12 | iftrue 3510 | . . . 4 ⊢ (𝑘 ∈ 𝑍 → if(𝑘 ∈ 𝑍, 𝐵, 1) = 𝐵) | |
13 | 12 | adantl 275 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → if(𝑘 ∈ 𝑍, 𝐵, 1) = 𝐵) |
14 | 11, 13 | eqtr4d 2193 | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = if(𝑘 ∈ 𝑍, 𝐵, 1)) |
15 | iprodn0.6 | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ ℂ) | |
16 | 1, 2, 3, 4, 9, 10, 14, 15 | zprodap0 11460 | 1 ⊢ (𝜑 → ∏𝑘 ∈ 𝑍 𝐵 = 𝑋) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 103 ∨ wo 698 DECID wdc 820 = wceq 1335 ∈ wcel 2128 ∀wral 2435 ifcif 3505 class class class wbr 3965 ‘cfv 5167 ℂcc 7713 0cc0 7715 1c1 7716 · cmul 7720 # cap 8439 ℤcz 9150 ℤ≥cuz 9422 seqcseq 10326 ⇝ cli 11157 ∏cprod 11429 |
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 1427 ax-7 1428 ax-gen 1429 ax-ie1 1473 ax-ie2 1474 ax-8 1484 ax-10 1485 ax-11 1486 ax-i12 1487 ax-bndl 1489 ax-4 1490 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-13 2130 ax-14 2131 ax-ext 2139 ax-coll 4079 ax-sep 4082 ax-nul 4090 ax-pow 4134 ax-pr 4168 ax-un 4392 ax-setind 4494 ax-iinf 4545 ax-cnex 7806 ax-resscn 7807 ax-1cn 7808 ax-1re 7809 ax-icn 7810 ax-addcl 7811 ax-addrcl 7812 ax-mulcl 7813 ax-mulrcl 7814 ax-addcom 7815 ax-mulcom 7816 ax-addass 7817 ax-mulass 7818 ax-distr 7819 ax-i2m1 7820 ax-0lt1 7821 ax-1rid 7822 ax-0id 7823 ax-rnegex 7824 ax-precex 7825 ax-cnre 7826 ax-pre-ltirr 7827 ax-pre-ltwlin 7828 ax-pre-lttrn 7829 ax-pre-apti 7830 ax-pre-ltadd 7831 ax-pre-mulgt0 7832 ax-pre-mulext 7833 ax-arch 7834 ax-caucvg 7835 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-3or 964 df-3an 965 df-tru 1338 df-fal 1341 df-nf 1441 df-sb 1743 df-eu 2009 df-mo 2010 df-clab 2144 df-cleq 2150 df-clel 2153 df-nfc 2288 df-ne 2328 df-nel 2423 df-ral 2440 df-rex 2441 df-reu 2442 df-rmo 2443 df-rab 2444 df-v 2714 df-sbc 2938 df-csb 3032 df-dif 3104 df-un 3106 df-in 3108 df-ss 3115 df-nul 3395 df-if 3506 df-pw 3545 df-sn 3566 df-pr 3567 df-op 3569 df-uni 3773 df-int 3808 df-iun 3851 df-br 3966 df-opab 4026 df-mpt 4027 df-tr 4063 df-id 4252 df-po 4255 df-iso 4256 df-iord 4325 df-on 4327 df-ilim 4328 df-suc 4330 df-iom 4548 df-xp 4589 df-rel 4590 df-cnv 4591 df-co 4592 df-dm 4593 df-rn 4594 df-res 4595 df-ima 4596 df-iota 5132 df-fun 5169 df-fn 5170 df-f 5171 df-f1 5172 df-fo 5173 df-f1o 5174 df-fv 5175 df-isom 5176 df-riota 5774 df-ov 5821 df-oprab 5822 df-mpo 5823 df-1st 6082 df-2nd 6083 df-recs 6246 df-irdg 6311 df-frec 6332 df-1o 6357 df-oadd 6361 df-er 6473 df-en 6679 df-dom 6680 df-fin 6681 df-pnf 7897 df-mnf 7898 df-xr 7899 df-ltxr 7900 df-le 7901 df-sub 8031 df-neg 8032 df-reap 8433 df-ap 8440 df-div 8529 df-inn 8817 df-2 8875 df-3 8876 df-4 8877 df-n0 9074 df-z 9151 df-uz 9423 df-q 9511 df-rp 9543 df-fz 9895 df-fzo 10024 df-seqfrec 10327 df-exp 10401 df-ihash 10632 df-cj 10724 df-re 10725 df-im 10726 df-rsqrt 10880 df-abs 10881 df-clim 11158 df-proddc 11430 |
This theorem is referenced by: (None) |
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