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| Mirrors > Home > MPE Home > Th. List > mulm1 | Structured version Visualization version GIF version | ||
| Description: Product with minus one is negative. (Contributed by NM, 16-Nov-1999.) |
| Ref | Expression |
|---|---|
| mulm1 | ⊢ (𝐴 ∈ ℂ → ( -1 · 𝐴) = -𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11261 | . . 3 ⊢ 1 ∈ ℂ | |
| 2 | mulneg1 11755 | . . 3 ⊢ ((1 ∈ ℂ ∧ 𝐴 ∈ ℂ) → ( -1 · 𝐴) = -(1 · 𝐴)) | |
| 3 | 1, 2 | mpan 703 | . 2 ⊢ (𝐴 ∈ ℂ → ( -1 · 𝐴) = -(1 · 𝐴)) |
| 4 | mullid 11310 | . . 3 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) | |
| 5 | 4 | negeqd 11554 | . 2 ⊢ (𝐴 ∈ ℂ → -(1 · 𝐴) = -𝐴) |
| 6 | 3, 5 | eqtrd 2795 | 1 ⊢ (𝐴 ∈ ℂ → ( -1 · 𝐴) = -𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 (class class class)co 7420 ℂcc 11201 1c1 11204 · cmul 11208 -cneg 11545 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-resscn 11260 ax-1cn 11261 ax-icn 11262 ax-addcl 11263 ax-addrcl 11264 ax-mulcl 11265 ax-mulrcl 11266 ax-mulcom 11267 ax-addass 11268 ax-mulass 11269 ax-distr 11270 ax-i2m1 11271 ax-1ne0 11272 ax-1rid 11273 ax-rnegex 11274 ax-rrecex 11275 ax-cnre 11276 ax-pre-lttri 11277 ax-pre-lttrn 11278 ax-pre-ltadd 11279 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-po 5558 df-so 5559 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-er 8720 df-en 8977 df-dom 8978 df-sdom 8979 df-pnf 11348 df-mnf 11349 df-ltxr 11351 df-sub 11546 df-neg 11547 |
| This theorem is used by: addneg1mul 11761 mulm1i 11764 mulm1d 11771 div2neg 12043 sqrtneglem 15438 sqreulem 15532 sinhval 16327 coshval 16328 demoivreALT 16374 sinmpi 26821 cosmpi 26822 sinppi 26823 cosppi 26824 cxpsqrt 27036 relogbdiv 27112 angneg 27136 lgsdir2lem4 27660 cnnvm 31289 cncph 31426 hvm1neg 31639 hvsubdistr2 31657 lnfnsubi 32653 dvasin 38715 lcmineqlem1 43172 |
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