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| Mirrors > Home > MPE Home > Th. List > divassi | Structured version Visualization version GIF version | ||
| Description: An associative law for division. (Contributed by NM, 15-Feb-1995.) |
| Ref | Expression |
|---|---|
| divclz.1 | ⊢ 𝐴 ∈ ℂ |
| divclz.2 | ⊢ 𝐵 ∈ ℂ |
| divmulz.3 | ⊢ 𝐶 ∈ ℂ |
| divass.4 | ⊢ 𝐶 ≠ 0 |
| Ref | Expression |
|---|---|
| divassi | ⊢ ((𝐴 · 𝐵) / 𝐶) = (𝐴 · (𝐵 / 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | divass.4 | . 2 ⊢ 𝐶 ≠ 0 | |
| 2 | divclz.1 | . . 3 ⊢ 𝐴 ∈ ℂ | |
| 3 | divclz.2 | . . 3 ⊢ 𝐵 ∈ ℂ | |
| 4 | divmulz.3 | . . 3 ⊢ 𝐶 ∈ ℂ | |
| 5 | 2, 3, 4 | divasszi 11971 | . 2 ⊢ (𝐶 ≠ 0 → ((𝐴 · 𝐵) / 𝐶) = (𝐴 · (𝐵 / 𝐶))) |
| 6 | 1, 5 | ax-mp 5 | 1 ⊢ ((𝐴 · 𝐵) / 𝐶) = (𝐴 · (𝐵 / 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2142 ≠ wne 2957 (class class class)co 7412 ℂcc 11104 0cc0 11106 · cmul 11111 / cdiv 11877 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-mpt 5192 df-id 5555 df-po 5568 df-so 5569 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-div 11878 |
| This theorem is used by: cos2bnd 16250 6lcm4e12 16680 sincos6thpi 26692 cxpsqrt 26879 1cubrlem 27017 efiatan 27088 log2cnv 27120 log2ublem1 27122 birthday 27130 bclbnd 27455 bposlem8 27466 ex-lcm 30820 dpmul4 33244 ballotth 34937 hgt750lem 35047 quad3 36170 25or6to4 43001 cxpi11d 43132 areaquad 43971 goldratmolem2 47651 41prothprmlem1 48397 |
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