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| Mirrors > Home > MPE Home > Th. List > fproddivf | Structured version Visualization version GIF version | ||
| Description: The quotient of two finite products. A version of fproddiv 16011 using bound-variable hypotheses instead of distinct variable conditions. (Contributed by Glauco Siliprandi, 5-Apr-2020.) |
| Ref | Expression |
|---|---|
| fproddivf.kph | ⊢ Ⅎ𝑘𝜑 |
| fproddivf.a | ⊢ (𝜑 → 𝐴 ∈ Fin) |
| fproddivf.b | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) |
| fproddivf.c | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐶 ∈ ℂ) |
| fproddivf.ne0 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐶 ≠ 0) |
| Ref | Expression |
|---|---|
| fproddivf | ⊢ (𝜑 → ∏𝑘 ∈ 𝐴 (𝐵 / 𝐶) = (∏𝑘 ∈ 𝐴 𝐵 / ∏𝑘 ∈ 𝐴 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfcv 2931 | . . . 4 ⊢ Ⅎ𝑗(𝐵 / 𝐶) | |
| 2 | nfcsb1v 3885 | . . . . 5 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐵 | |
| 3 | nfcv 2931 | . . . . 5 ⊢ Ⅎ𝑘 / | |
| 4 | nfcsb1v 3885 | . . . . 5 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐶 | |
| 5 | 2, 3, 4 | nfov 7438 | . . . 4 ⊢ Ⅎ𝑘(⦋𝑗 / 𝑘⦌𝐵 / ⦋𝑗 / 𝑘⦌𝐶) |
| 6 | csbeq1a 3875 | . . . . 5 ⊢ (𝑘 = 𝑗 → 𝐵 = ⦋𝑗 / 𝑘⦌𝐵) | |
| 7 | csbeq1a 3875 | . . . . 5 ⊢ (𝑘 = 𝑗 → 𝐶 = ⦋𝑗 / 𝑘⦌𝐶) | |
| 8 | 6, 7 | oveq12d 7426 | . . . 4 ⊢ (𝑘 = 𝑗 → (𝐵 / 𝐶) = (⦋𝑗 / 𝑘⦌𝐵 / ⦋𝑗 / 𝑘⦌𝐶)) |
| 9 | 1, 5, 8 | cbvprodi 15965 | . . 3 ⊢ ∏𝑘 ∈ 𝐴 (𝐵 / 𝐶) = ∏𝑗 ∈ 𝐴 (⦋𝑗 / 𝑘⦌𝐵 / ⦋𝑗 / 𝑘⦌𝐶) |
| 10 | 9 | a1i 11 | . 2 ⊢ (𝜑 → ∏𝑘 ∈ 𝐴 (𝐵 / 𝐶) = ∏𝑗 ∈ 𝐴 (⦋𝑗 / 𝑘⦌𝐵 / ⦋𝑗 / 𝑘⦌𝐶)) |
| 11 | fproddivf.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ Fin) | |
| 12 | fproddivf.kph | . . . . . 6 ⊢ Ⅎ𝑘𝜑 | |
| 13 | nfvd 1942 | . . . . . 6 ⊢ (𝜑 → Ⅎ𝑘 𝑗 ∈ 𝐴) | |
| 14 | 12, 13 | nfan1 2242 | . . . . 5 ⊢ Ⅎ𝑘(𝜑 ∧ 𝑗 ∈ 𝐴) |
| 15 | 2 | nfel1 2947 | . . . . 5 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐵 ∈ ℂ |
| 16 | 14, 15 | nfim 1923 | . . . 4 ⊢ Ⅎ𝑘((𝜑 ∧ 𝑗 ∈ 𝐴) → ⦋𝑗 / 𝑘⦌𝐵 ∈ ℂ) |
| 17 | eleq1w 2852 | . . . . . 6 ⊢ (𝑘 = 𝑗 → (𝑘 ∈ 𝐴 ↔ 𝑗 ∈ 𝐴)) | |
| 18 | 17 | anbi2d 641 | . . . . 5 ⊢ (𝑘 = 𝑗 → ((𝜑 ∧ 𝑘 ∈ 𝐴) ↔ (𝜑 ∧ 𝑗 ∈ 𝐴))) |
| 19 | 6 | eleq1d 2854 | . . . . 5 ⊢ (𝑘 = 𝑗 → (𝐵 ∈ ℂ ↔ ⦋𝑗 / 𝑘⦌𝐵 ∈ ℂ)) |
| 20 | 18, 19 | imbi12d 347 | . . . 4 ⊢ (𝑘 = 𝑗 → (((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) ↔ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ⦋𝑗 / 𝑘⦌𝐵 ∈ ℂ))) |
| 21 | fproddivf.b | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) | |
| 22 | 16, 20, 21 | chvarfv 2282 | . . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ⦋𝑗 / 𝑘⦌𝐵 ∈ ℂ) |
| 23 | 4 | nfel1 2947 | . . . . 5 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ |
| 24 | 14, 23 | nfim 1923 | . . . 4 ⊢ Ⅎ𝑘((𝜑 ∧ 𝑗 ∈ 𝐴) → ⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ) |
| 25 | 7 | eleq1d 2854 | . . . . 5 ⊢ (𝑘 = 𝑗 → (𝐶 ∈ ℂ ↔ ⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ)) |
| 26 | 18, 25 | imbi12d 347 | . . . 4 ⊢ (𝑘 = 𝑗 → (((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐶 ∈ ℂ) ↔ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ))) |
| 27 | fproddivf.c | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐶 ∈ ℂ) | |
| 28 | 24, 26, 27 | chvarfv 2282 | . . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ⦋𝑗 / 𝑘⦌𝐶 ∈ ℂ) |
| 29 | nfcv 2931 | . . . . . 6 ⊢ Ⅎ𝑘0 | |
| 30 | 4, 29 | nfne 3067 | . . . . 5 ⊢ Ⅎ𝑘⦋𝑗 / 𝑘⦌𝐶 ≠ 0 |
| 31 | 14, 30 | nfim 1923 | . . . 4 ⊢ Ⅎ𝑘((𝜑 ∧ 𝑗 ∈ 𝐴) → ⦋𝑗 / 𝑘⦌𝐶 ≠ 0) |
| 32 | 7 | neeq1d 3023 | . . . . 5 ⊢ (𝑘 = 𝑗 → (𝐶 ≠ 0 ↔ ⦋𝑗 / 𝑘⦌𝐶 ≠ 0)) |
| 33 | 18, 32 | imbi12d 347 | . . . 4 ⊢ (𝑘 = 𝑗 → (((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐶 ≠ 0) ↔ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ⦋𝑗 / 𝑘⦌𝐶 ≠ 0))) |
| 34 | fproddivf.ne0 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐶 ≠ 0) | |
| 35 | 31, 33, 34 | chvarfv 2282 | . . 3 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ⦋𝑗 / 𝑘⦌𝐶 ≠ 0) |
| 36 | 11, 22, 28, 35 | fproddiv 16011 | . 2 ⊢ (𝜑 → ∏𝑗 ∈ 𝐴 (⦋𝑗 / 𝑘⦌𝐵 / ⦋𝑗 / 𝑘⦌𝐶) = (∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐵 / ∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐶)) |
| 37 | nfcv 2931 | . . . . . 6 ⊢ Ⅎ𝑗𝐵 | |
| 38 | 37, 2, 6 | cbvprodi 15965 | . . . . 5 ⊢ ∏𝑘 ∈ 𝐴 𝐵 = ∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐵 |
| 39 | 38 | eqcomi 2778 | . . . 4 ⊢ ∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐵 = ∏𝑘 ∈ 𝐴 𝐵 |
| 40 | 39 | a1i 11 | . . 3 ⊢ (𝜑 → ∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐵 = ∏𝑘 ∈ 𝐴 𝐵) |
| 41 | nfcv 2931 | . . . . 5 ⊢ Ⅎ𝑗𝐶 | |
| 42 | 7 | equcoms 2047 | . . . . . 6 ⊢ (𝑗 = 𝑘 → 𝐶 = ⦋𝑗 / 𝑘⦌𝐶) |
| 43 | 42 | eqcomd 2775 | . . . . 5 ⊢ (𝑗 = 𝑘 → ⦋𝑗 / 𝑘⦌𝐶 = 𝐶) |
| 44 | 4, 41, 43 | cbvprodi 15965 | . . . 4 ⊢ ∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐶 = ∏𝑘 ∈ 𝐴 𝐶 |
| 45 | 44 | a1i 11 | . . 3 ⊢ (𝜑 → ∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐶 = ∏𝑘 ∈ 𝐴 𝐶) |
| 46 | 40, 45 | oveq12d 7426 | . 2 ⊢ (𝜑 → (∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐵 / ∏𝑗 ∈ 𝐴 ⦋𝑗 / 𝑘⦌𝐶) = (∏𝑘 ∈ 𝐴 𝐵 / ∏𝑘 ∈ 𝐴 𝐶)) |
| 47 | 10, 36, 46 | 3eqtrd 2808 | 1 ⊢ (𝜑 → ∏𝑘 ∈ 𝐴 (𝐵 / 𝐶) = (∏𝑘 ∈ 𝐴 𝐵 / ∏𝑘 ∈ 𝐴 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1567 Ⅎwnf 1810 ∈ wcel 2149 ≠ wne 2964 ⦋csb 3861 (class class class)co 7408 Fincfn 8939 ℂcc 11094 0cc0 11096 / cdiv 11867 ∏cprod 15953 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5239 ax-sep 5258 ax-nul 5268 ax-pow 5334 ax-pr 5402 ax-un 7730 ax-inf2 9606 ax-cnex 11152 ax-resscn 11153 ax-1cn 11154 ax-icn 11155 ax-addcl 11156 ax-addrcl 11157 ax-mulcl 11158 ax-mulrcl 11159 ax-mulcom 11160 ax-addass 11161 ax-mulass 11162 ax-distr 11163 ax-i2m1 11164 ax-1ne0 11165 ax-1rid 11166 ax-rnegex 11167 ax-rrecex 11168 ax-cnre 11169 ax-pre-lttri 11170 ax-pre-lttrn 11171 ax-pre-ltadd 11172 ax-pre-mulgt0 11173 ax-pre-sup 11174 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-int 4914 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-se 5613 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6300 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6490 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 df-fv 6542 df-isom 6543 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7859 df-1st 7982 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-1o 8449 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-sup 9398 df-oi 9468 df-card 9921 df-pnf 11241 df-mnf 11242 df-xr 11243 df-ltxr 11244 df-le 11245 df-sub 11439 df-neg 11440 df-div 11868 df-nn 12230 df-2 12299 df-3 12300 df-n0 12501 df-z 12588 df-uz 12859 df-rp 13013 df-fz 13532 df-fzo 13679 df-seq 14034 df-exp 14094 df-hash 14363 df-cj 15146 df-re 15147 df-im 15148 df-sqrt 15282 df-abs 15283 df-clim 15535 df-prod 15954 |
| This theorem is referenced by: fprodle 16046 |
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