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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 11967 | . 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 7412 ℂcc 11179 0cc0 11181 / cdiv 11954 |
| 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 7740 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 |
| 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 3902 df-un 3904 df-in 3906 df-ss 3916 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 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-er 8701 df-en 8958 df-dom 8959 df-sdom 8960 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-div 11955 |
| This theorem is used by: ntrivcvgtail 16049 tanval3 16282 lcmgcdlem 16761 pcdiv 17010 pcqdiv 17015 sylow1lem1 19792 fincygsubgodd 20308 i1fmulc 26004 itg1mulc 26005 dvcnvlem 26276 plydivlem4 26599 tanarg 26929 logcnlem4 26955 angcld 27115 angrteqvd 27116 cosangneg2d 27117 angrtmuld 27118 ang180lem1 27119 ang180lem2 27120 ang180lem3 27121 ang180lem4 27122 ang180lem5 27123 lawcoslem1 27125 lawcos 27126 isosctrlem2 27129 isosctrlem3 27130 angpieqvdlem2 27139 mcubic 27157 cubic2 27158 cubic 27159 quartlem4 27170 tanatan 27229 dmgmdivn0 27337 lgamgulmlem2 27339 gamcvg2lem 27368 nrt2irr 31056 constrrtlc1 34346 qqhval2lem 34595 iprodgam 36476 recbothd 43010 aks4d1p1p7 43092 aks6d1c2p2 43137 unitscyglem2 43214 pellexlem6 43794 bccm1k 45285 ioodvbdlimc1lem2 46886 ioodvbdlimc2lem 46888 wallispilem4 47022 stirlinglem1 47028 stirlinglem3 47030 stirlinglem4 47031 stirlinglem7 47034 stirlinglem13 47040 stirlinglem14 47041 stirlinglem15 47042 |
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