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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 11288 | . 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 1541 ∈ wcel 2113 (class class class)co 7352 ℂcc 11011 · cmul 11018 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2705 ax-mulcl 11075 ax-mulcom 11077 ax-mulass 11079 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2712 df-cleq 2725 df-clel 2808 df-rab 3397 df-v 3439 df-dif 3901 df-un 3903 df-ss 3915 df-nul 4283 df-if 4475 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-br 5094 df-iota 6442 df-fv 6494 df-ov 7355 |
| This theorem is referenced by: remullem 15037 absmul 15203 binomrisefac 15951 cosadd 16076 tanadd 16078 eulerthlem2 16695 mul4sqlem 16867 odadd2 19763 itgmulc2 25763 plymullem1 26147 chordthmlem4 26773 heron 26776 quartlem1 26795 dchrmulcl 27188 bposlem9 27231 lgsdir 27271 lgsdi 27273 lgsquad2lem1 27323 chtppilimlem1 27412 rplogsumlem1 27423 dchrvmasumlem1 27434 dchrvmasum2lem 27435 chpdifbndlem1 27492 pntlemf 27544 brbtwn2 28885 colinearalglem4 28889 binom2subadd 32729 zringfrac 33526 constrmulcl 33805 madjusmdetlem4 33864 hgt750lemf 34687 hgt750leme 34692 circum 35739 itgmulc2nc 37748 flt4lem5e 42774 pellexlem6 42951 pell1234qrmulcl 42972 rmxyadd 43038 wallispi2lem2 46194 dirkertrigeqlem3 46222 cevathlem1 46989 itsclc0xyqsolr 48894 |
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