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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 11912 | . 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 2957 (class class class)co 7417 ℂcc 11126 0cc0 11128 / cdiv 11899 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 ax-resscn 11185 ax-1cn 11186 ax-icn 11187 ax-addcl 11188 ax-addrcl 11189 ax-mulcl 11190 ax-mulrcl 11191 ax-mulcom 11192 ax-addass 11193 ax-mulass 11194 ax-distr 11195 ax-i2m1 11196 ax-1ne0 11197 ax-1rid 11198 ax-rnegex 11199 ax-rrecex 11200 ax-cnre 11201 ax-pre-lttri 11202 ax-pre-lttrn 11203 ax-pre-ltadd 11204 ax-pre-mulgt0 11205 |
| 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 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 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-po 5567 df-so 5568 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7374 df-ov 7420 df-oprab 7421 df-mpo 7422 df-er 8700 df-en 8957 df-dom 8958 df-sdom 8959 df-pnf 11273 df-mnf 11274 df-xr 11275 df-ltxr 11276 df-le 11277 df-sub 11471 df-neg 11472 df-div 11900 |
| This theorem is used by: ntrivcvgtail 15993 tanval3 16228 lcmgcdlem 16702 pcdiv 16950 pcqdiv 16955 sylow1lem1 19731 fincygsubgodd 20247 i1fmulc 25937 itg1mulc 25938 dvcnvlem 26210 plydivlem4 26533 tanarg 26864 logcnlem4 26890 angcld 27050 angrteqvd 27051 cosangneg2d 27052 angrtmuld 27053 ang180lem1 27054 ang180lem2 27055 ang180lem3 27056 ang180lem4 27057 ang180lem5 27058 lawcoslem1 27060 lawcos 27061 isosctrlem2 27064 isosctrlem3 27065 angpieqvdlem2 27074 mcubic 27092 cubic2 27093 cubic 27094 quartlem4 27105 tanatan 27164 dmgmdivn0 27272 lgamgulmlem2 27274 gamcvg2lem 27303 nrt2irr 30961 constrrtlc1 34250 qqhval2lem 34499 iprodgam 36329 recbothd 42866 aks4d1p1p7 42948 aks6d1c2p2 42993 unitscyglem2 43070 pellexlem6 43683 bccm1k 45174 ioodvbdlimc1lem2 46768 ioodvbdlimc2lem 46770 wallispilem4 46904 stirlinglem1 46910 stirlinglem3 46912 stirlinglem4 46913 stirlinglem7 46916 stirlinglem13 46922 stirlinglem14 46923 stirlinglem15 46924 |
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