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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 11348 | . 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) ∧ (𝐶 ∈ ℂ ∧ 𝐷 ∈ ℂ)) → ((𝐴 · 𝐵) · (𝐶 · 𝐷)) = ((𝐴 · 𝐶) · (𝐵 · 𝐷))) | |
| 6 | 1, 2, 3, 4, 5 | syl22anc 849 | 1 ⊢ (𝜑 → ((𝐴 · 𝐵) · (𝐶 · 𝐷)) = ((𝐴 · 𝐶) · (𝐵 · 𝐷))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 ∈ wcel 2141 (class class class)co 7392 ℂcc 11068 · cmul 11075 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 ax-mulcl 11132 ax-mulcom 11134 ax-mulass 11136 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-rab 3414 df-v 3455 df-dif 3907 df-un 3909 df-ss 3921 df-nul 4286 df-if 4480 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-iota 6473 df-fv 6525 df-ov 7395 |
| This theorem is referenced by: remullem 15138 absmul 15304 binomrisefac 16055 cosadd 16180 tanadd 16182 eulerthlem2 16800 mul4sqlem 16972 odadd2 19872 itgmulc2 25876 plymullem1 26254 chordthmlem4 26877 heron 26880 quartlem1 26899 dchrmulcl 27290 bposlem9 27333 lgsdir 27373 lgsdi 27375 lgsquad2lem1 27425 chtppilimlem1 27514 rplogsumlem1 27525 dchrvmasumlem1 27536 dchrvmasum2lem 27537 chpdifbndlem1 27594 pntlemf 27646 brbtwn2 29052 colinearalglem4 29056 binom2subadd 32893 zringfrac 33711 constrmulcl 34029 madjusmdetlem4 34088 hgt750lemf 34911 hgt750leme 34916 circum 35988 itgmulc2nc 38151 flt4lem5e 43202 pellexlem6 43375 pell1234qrmulcl 43396 rmxyadd 43462 wallispi2lem2 46610 dirkertrigeqlem3 46638 cevathlem1 47405 sin5tlem1 47431 sin5tlem4 47434 itsclc0xyqsolr 49355 |
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