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Mirrors > Home > MPE Home > Th. List > mul4d | Structured version Visualization version GIF version |
Description: Rearrangement of 4 factors. (Contributed by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
muld.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
addcomd.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
addcand.3 | ⊢ (𝜑 → 𝐶 ∈ ℂ) |
mul4d.4 | ⊢ (𝜑 → 𝐷 ∈ ℂ) |
Ref | Expression |
---|---|
mul4d | ⊢ (𝜑 → ((𝐴 · 𝐵) · (𝐶 · 𝐷)) = ((𝐴 · 𝐶) · (𝐵 · 𝐷))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | muld.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
2 | addcomd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
3 | addcand.3 | . 2 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
4 | mul4d.4 | . 2 ⊢ (𝜑 → 𝐷 ∈ ℂ) | |
5 | mul4 11458 | . 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) ∧ (𝐶 ∈ ℂ ∧ 𝐷 ∈ ℂ)) → ((𝐴 · 𝐵) · (𝐶 · 𝐷)) = ((𝐴 · 𝐶) · (𝐵 · 𝐷))) | |
6 | 1, 2, 3, 4, 5 | syl22anc 838 | 1 ⊢ (𝜑 → ((𝐴 · 𝐵) · (𝐶 · 𝐷)) = ((𝐴 · 𝐶) · (𝐵 · 𝐷))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∈ wcel 2108 (class class class)co 7448 ℂcc 11182 · cmul 11189 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-ext 2711 ax-mulcl 11246 ax-mulcom 11248 ax-mulass 11250 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-sb 2065 df-clab 2718 df-cleq 2732 df-clel 2819 df-rab 3444 df-v 3490 df-dif 3979 df-un 3981 df-ss 3993 df-nul 4353 df-if 4549 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-br 5167 df-iota 6525 df-fv 6581 df-ov 7451 |
This theorem is referenced by: remullem 15177 absmul 15343 binomrisefac 16090 cosadd 16213 tanadd 16215 eulerthlem2 16829 mul4sqlem 17000 odadd2 19891 itgmulc2 25889 plymullem1 26273 chordthmlem4 26896 heron 26899 quartlem1 26918 dchrmulcl 27311 bposlem9 27354 lgsdir 27394 lgsdi 27396 lgsquad2lem1 27446 chtppilimlem1 27535 rplogsumlem1 27546 dchrvmasumlem1 27557 dchrvmasum2lem 27558 chpdifbndlem1 27615 pntlemf 27667 brbtwn2 28938 colinearalglem4 28942 zringfrac 33547 madjusmdetlem4 33776 hgt750lemf 34630 hgt750leme 34635 circum 35642 itgmulc2nc 37648 flt4lem5e 42611 pellexlem6 42790 pell1234qrmulcl 42811 rmxyadd 42878 wallispi2lem2 45993 dirkertrigeqlem3 46021 cevathlem1 46788 itsclc0xyqsolr 48503 |
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