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| Mirrors > Home > ILE Home > Th. List > fprodsplitf | GIF version | ||
| Description: Split a finite product into two parts. A version of fprodsplit 12279 using bound-variable hypotheses instead of distinct variable conditions. (Contributed by Glauco Siliprandi, 5-Apr-2020.) |
| Ref | Expression |
|---|---|
| fprodsplitf.kph | ⊢ Ⅎ𝑘𝜑 |
| fprodsplitf.in | ⊢ (𝜑 → (𝐴 ∩ 𝐵) = ∅) |
| fprodsplitf.un | ⊢ (𝜑 → 𝑈 = (𝐴 ∪ 𝐵)) |
| fprodsplitf.fi | ⊢ (𝜑 → 𝑈 ∈ Fin) |
| fprodsplitf.c | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑈) → 𝐶 ∈ ℂ) |
| Ref | Expression |
|---|---|
| fprodsplitf | ⊢ (𝜑 → ∏𝑘 ∈ 𝑈 𝐶 = (∏𝑘 ∈ 𝐴 𝐶 · ∏𝑘 ∈ 𝐵 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fprodsplitf.in | . . 3 ⊢ (𝜑 → (𝐴 ∩ 𝐵) = ∅) | |
| 2 | fprodsplitf.un | . . 3 ⊢ (𝜑 → 𝑈 = (𝐴 ∪ 𝐵)) | |
| 3 | fprodsplitf.fi | . . 3 ⊢ (𝜑 → 𝑈 ∈ Fin) | |
| 4 | fprodsplitf.kph | . . . . . 6 ⊢ Ⅎ𝑘𝜑 | |
| 5 | nfv 1577 | . . . . . 6 ⊢ Ⅎ𝑘 𝑗 ∈ 𝑈 | |
| 6 | 4, 5 | nfan 1614 | . . . . 5 ⊢ Ⅎ𝑘(𝜑 ∧ 𝑗 ∈ 𝑈) |
| 7 | nfcsb1v 3170 | . . . . . 6 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐶 | |
| 8 | 7 | nfel1 2395 | . . . . 5 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ |
| 9 | 6, 8 | nfim 1621 | . . . 4 ⊢ Ⅎ𝑘((𝜑 ∧ 𝑗 ∈ 𝑈) → ⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ) |
| 10 | eleq1w 2293 | . . . . . 6 ⊢ (𝑘 = 𝑗 → (𝑘 ∈ 𝑈 ↔ 𝑗 ∈ 𝑈)) | |
| 11 | 10 | anbi2d 464 | . . . . 5 ⊢ (𝑘 = 𝑗 → ((𝜑 ∧ 𝑘 ∈ 𝑈) ↔ (𝜑 ∧ 𝑗 ∈ 𝑈))) |
| 12 | csbeq1a 3146 | . . . . . 6 ⊢ (𝑘 = 𝑗 → 𝐶 = ⦋𝑗 / 𝑘⦌𝐶) | |
| 13 | 12 | eleq1d 2301 | . . . . 5 ⊢ (𝑘 = 𝑗 → (𝐶 ∈ ℂ ↔ ⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ)) |
| 14 | 11, 13 | imbi12d 234 | . . . 4 ⊢ (𝑘 = 𝑗 → (((𝜑 ∧ 𝑘 ∈ 𝑈) → 𝐶 ∈ ℂ) ↔ ((𝜑 ∧ 𝑗 ∈ 𝑈) → ⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ))) |
| 15 | fprodsplitf.c | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑈) → 𝐶 ∈ ℂ) | |
| 16 | 9, 14, 15 | chvarfv 1748 | . . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑈) → ⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ) |
| 17 | 1, 2, 3, 16 | fprodsplit 12279 | . 2 ⊢ (𝜑 → ∏𝑗 ∈ 𝑈 ⦋𝑗 / 𝑘⦌𝐶 = (∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐶 · ∏𝑗 ∈ 𝐵 ⦋𝑗 / 𝑘⦌𝐶)) |
| 18 | nfcv 2384 | . . 3 ⊢ Ⅎ𝑗𝐶 | |
| 19 | 18, 7, 12 | cbvprodi 12242 | . 2 ⊢ ∏𝑘 ∈ 𝑈 𝐶 = ∏𝑗 ∈ 𝑈 ⦋𝑗 / 𝑘⦌𝐶 |
| 20 | 18, 7, 12 | cbvprodi 12242 | . . 3 ⊢ ∏𝑘 ∈ 𝐴 𝐶 = ∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐶 |
| 21 | 18, 7, 12 | cbvprodi 12242 | . . 3 ⊢ ∏𝑘 ∈ 𝐵 𝐶 = ∏𝑗 ∈ 𝐵 ⦋𝑗 / 𝑘⦌𝐶 |
| 22 | 20, 21 | oveq12i 6061 | . 2 ⊢ (∏𝑘 ∈ 𝐴 𝐶 · ∏𝑘 ∈ 𝐵 𝐶) = (∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐶 · ∏𝑗 ∈ 𝐵 ⦋𝑗 / 𝑘⦌𝐶) |
| 23 | 17, 19, 22 | 3eqtr4g 2290 | 1 ⊢ (𝜑 → ∏𝑘 ∈ 𝑈 𝐶 = (∏𝑘 ∈ 𝐴 𝐶 · ∏𝑘 ∈ 𝐵 𝐶)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 Ⅎwnf 1509 ∈ wcel 2203 ⦋csb 3137 ∪ cun 3208 ∩ cin 3209 ∅c0 3507 (class class class)co 6049 Fincfn 6974 ℂcc 8124 · cmul 8131 ∏cprod 12232 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-coll 4224 ax-sep 4227 ax-nul 4235 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-iinf 4709 ax-cnex 8217 ax-resscn 8218 ax-1cn 8219 ax-1re 8220 ax-icn 8221 ax-addcl 8222 ax-addrcl 8223 ax-mulcl 8224 ax-mulrcl 8225 ax-addcom 8226 ax-mulcom 8227 ax-addass 8228 ax-mulass 8229 ax-distr 8230 ax-i2m1 8231 ax-0lt1 8232 ax-1rid 8233 ax-0id 8234 ax-rnegex 8235 ax-precex 8236 ax-cnre 8237 ax-pre-ltirr 8238 ax-pre-ltwlin 8239 ax-pre-lttrn 8240 ax-pre-apti 8241 ax-pre-ltadd 8242 ax-pre-mulgt0 8243 ax-pre-mulext 8244 ax-arch 8245 ax-caucvg 8246 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-reu 2527 df-rmo 2528 df-rab 2529 df-v 2814 df-sbc 3042 df-csb 3138 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-nul 3508 df-if 3620 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-int 3949 df-iun 3992 df-br 4109 df-opab 4171 df-mpt 4172 df-tr 4208 df-id 4413 df-po 4416 df-iso 4417 df-iord 4486 df-on 4488 df-ilim 4489 df-suc 4491 df-iom 4712 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-rn 4759 df-res 4760 df-ima 4761 df-iota 5311 df-fun 5353 df-fn 5354 df-f 5355 df-f1 5356 df-fo 5357 df-f1o 5358 df-fv 5359 df-isom 5360 df-riota 6002 df-ov 6052 df-oprab 6053 df-mpo 6054 df-1st 6333 df-2nd 6334 df-recs 6535 df-irdg 6600 df-frec 6621 df-1o 6646 df-oadd 6650 df-er 6766 df-en 6975 df-dom 6976 df-fin 6977 df-pnf 8309 df-mnf 8310 df-xr 8311 df-ltxr 8312 df-le 8313 df-sub 8445 df-neg 8446 df-reap 8848 df-ap 8855 df-div 8946 df-inn 9237 df-2 9295 df-3 9296 df-4 9297 df-n0 9496 df-z 9577 df-uz 9853 df-q 9951 df-rp 9986 df-fz 10342 df-fzo 10476 df-seqfrec 10809 df-exp 10900 df-ihash 11137 df-cj 11523 df-re 11524 df-im 11525 df-rsqrt 11679 df-abs 11680 df-clim 11960 df-proddc 12233 |
| This theorem is referenced by: fprodsplitsn 12315 fprodsplit1f 12316 |
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