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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 11374 | . 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) ∧ (𝐶 ∈ ℂ ∧ 𝐷 ∈ ℂ)) → ((𝐴 · 𝐵) · (𝐶 · 𝐷)) = ((𝐴 · 𝐶) · (𝐵 · 𝐷))) | |
| 6 | 1, 2, 3, 4, 5 | syl22anc 851 | 1 ⊢ (𝜑 → ((𝐴 · 𝐵) · (𝐶 · 𝐷)) = ((𝐴 · 𝐶) · (𝐵 · 𝐷))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1567 ∈ wcel 2149 (class class class)co 7408 ℂcc 11094 · cmul 11101 |
| 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-ext 2741 ax-mulcl 11158 ax-mulcom 11160 ax-mulass 11162 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-ss 3930 df-nul 4295 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-br 5111 df-iota 6489 df-fv 6541 df-ov 7411 |
| This theorem is referenced by: remullem 15175 absmul 15341 binomrisefac 16092 cosadd 16217 tanadd 16219 eulerthlem2 16837 mul4sqlem 17009 odadd2 19915 itgmulc2 25958 plymullem1 26336 chordthmlem4 26962 heron 26965 quartlem1 26984 dchrmulcl 27375 bposlem9 27418 lgsdir 27458 lgsdi 27460 lgsquad2lem1 27510 chtppilimlem1 27599 rplogsumlem1 27610 dchrvmasumlem1 27621 dchrvmasum2lem 27622 chpdifbndlem1 27679 pntlemf 27731 brbtwn2 29192 colinearalglem4 29196 binom2subadd 33023 zringfrac 33785 constrmulcl 34102 madjusmdetlem4 34161 hgt750lemf 34981 hgt750leme 34986 circum 36061 itgmulc2nc 38222 flt4lem5e 43273 pellexlem6 43446 pell1234qrmulcl 43467 rmxyadd 43533 wallispi2lem2 46671 dirkertrigeqlem3 46699 cevathlem1 47466 sin5tlem1 47492 sin5tlem4 47495 itsclc0xyqsolr 49427 |
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