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| Mirrors > Home > MPE Home > Th. List > divne0d | Structured version Visualization version GIF version | ||
| Description: The ratio of nonzero numbers is nonzero. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| div1d.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| divcld.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| divne0d.3 | ⊢ (𝜑 → 𝐴 ≠ 0) |
| divne0d.4 | ⊢ (𝜑 → 𝐵 ≠ 0) |
| Ref | Expression |
|---|---|
| divne0d | ⊢ (𝜑 → (𝐴 / 𝐵) ≠ 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | div1d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 2 | divne0d.3 | . 2 ⊢ (𝜑 → 𝐴 ≠ 0) | |
| 3 | divcld.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 4 | divne0d.4 | . 2 ⊢ (𝜑 → 𝐵 ≠ 0) | |
| 5 | divne0 11987 | . 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 ≠ 0)) → (𝐴 / 𝐵) ≠ 0) | |
| 6 | 1, 2, 3, 4, 5 | syl22anc 852 | 1 ⊢ (𝜑 → (𝐴 / 𝐵) ≠ 0) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ≠ wne 2956 (class class class)co 7421 ℂcc 11199 0cc0 11201 / cdiv 11974 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7752 ax-resscn 11258 ax-1cn 11259 ax-icn 11260 ax-addcl 11261 ax-addrcl 11262 ax-mulcl 11263 ax-mulrcl 11264 ax-mulcom 11265 ax-addass 11266 ax-mulass 11267 ax-distr 11268 ax-i2m1 11269 ax-1ne0 11270 ax-1rid 11271 ax-rnegex 11272 ax-rrecex 11273 ax-cnre 11274 ax-pre-lttri 11275 ax-pre-lttrn 11276 ax-pre-ltadd 11277 ax-pre-mulgt0 11278 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3900 df-un 3902 df-in 3904 df-ss 3915 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6495 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-riota 7378 df-ov 7424 df-oprab 7425 df-mpo 7426 df-er 8718 df-en 8975 df-dom 8976 df-sdom 8977 df-pnf 11346 df-mnf 11347 df-xr 11348 df-ltxr 11349 df-le 11350 df-sub 11544 df-neg 11545 df-div 11975 |
| This theorem is used by: ntrivcvgtail 16070 tanval3 16303 lcmgcdlem 16782 pcdiv 17031 pcqdiv 17036 sylow1lem1 19813 fincygsubgodd 20329 i1fmulc 26025 itg1mulc 26026 dvcnvlem 26297 plydivlem4 26618 tanarg 26948 logcnlem4 26974 angcld 27134 angrteqvd 27135 cosangneg2d 27136 angrtmuld 27137 ang180lem1 27138 ang180lem2 27139 ang180lem3 27140 ang180lem4 27141 ang180lem5 27142 lawcoslem1 27144 lawcos 27145 isosctrlem2 27148 isosctrlem3 27149 angpieqvdlem2 27158 mcubic 27176 cubic2 27177 cubic 27178 quartlem4 27189 tanatan 27248 dmgmdivn0 27356 lgamgulmlem2 27358 gamcvg2lem 27387 nrt2irr 31075 constrrtlc1 34365 qqhval2lem 34614 iprodgam 36508 recbothd 43044 aks4d1p1p7 43126 aks6d1c2p2 43171 unitscyglem2 43248 pellexlem6 43842 bccm1k 45327 ioodvbdlimc1lem2 46943 ioodvbdlimc2lem 46945 wallispilem4 47079 stirlinglem1 47085 stirlinglem3 47087 stirlinglem4 47088 stirlinglem7 47091 stirlinglem13 47097 stirlinglem14 47098 stirlinglem15 47099 |
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