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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 11379 | . 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 1570 ∈ wcel 2143 (class class class)co 7412 ℂcc 11099 · cmul 11106 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-mulcl 11163 ax-mulcom 11165 ax-mulass 11167 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-rab 3417 df-v 3457 df-dif 3909 df-un 3911 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-br 5111 df-iota 6494 df-fv 6546 df-ov 7415 |
| This theorem is referenced by: remullem 15181 absmul 15347 binomrisefac 16097 cosadd 16222 tanadd 16224 eulerthlem2 16842 mul4sqlem 17014 odadd2 19920 itgmulc2 25974 plymullem1 26352 chordthmlem4 26981 heron 26984 quartlem1 27003 dchrmulcl 27394 bposlem9 27437 lgsdir 27477 lgsdi 27479 lgsquad2lem1 27529 chtppilimlem1 27618 rplogsumlem1 27629 dchrvmasumlem1 27640 dchrvmasum2lem 27641 chpdifbndlem1 27698 pntlemf 27750 brbtwn2 29236 colinearalglem4 29240 binom2subadd 33067 zringfrac 33825 constrmulcl 34142 madjusmdetlem4 34201 hgt750lemf 35021 hgt750leme 35026 circum 36147 itgmulc2nc 38320 flt4lem5e 43371 pellexlem6 43544 pell1234qrmulcl 43565 rmxyadd 43631 wallispi2lem2 46769 dirkertrigeqlem3 46797 cevathlem1 47564 sin5tlem1 47593 sin5tlem4 47596 itsclc0xyqsolr 49532 |
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