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| Mirrors > Home > MPE Home > Th. List > div0d | Structured version Visualization version GIF version | ||
| Description: Division into zero is zero. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| div1d.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| reccld.2 | ⊢ (𝜑 → 𝐴 ≠ 0) |
| Ref | Expression |
|---|---|
| div0d | ⊢ (𝜑 → (0 / 𝐴) = 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | div1d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 2 | reccld.2 | . 2 ⊢ (𝜑 → 𝐴 ≠ 0) | |
| 3 | div0 11986 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) → (0 / 𝐴) = 0) | |
| 4 | 1, 2, 3 | syl2anc 596 | 1 ⊢ (𝜑 → (0 / 𝐴) = 0) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ 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: mul2lt0rlt0 13205 bcval5 14442 ef0lem 16224 phiprmpw 16933 pceulem 17003 pcqmul 17011 pcqcl 17014 pcaddlem 17046 pcadd 17047 prmreclem4 17077 nmoleub2lem2 25417 mbfi1fseqlem3 26018 itgz 26081 ibl0 26087 iblss2 26106 itgss 26112 dvconst 26217 dvcobr 26246 plyeq0lem 26509 elqaalem3 26626 aareccl 26635 logb1 27079 birthdaylem3 27263 basellem4 27393 logexprlim 27534 chpo1ubb 27790 rpvmasumlem 27796 constrrecl 34383 cos9thpiminplylem3 34398 cndprobnul 35052 cvmliftlem7 36025 cvmliftlem10 36028 cvmliftlem13 36030 faclim 36480 poimirlem29 38535 poimirlem31 38537 areacirclem4 38597 pellexlem6 43794 reglog1 43856 stoweidlem36 46990 fourierdlem30 47091 fourierdlem103 47163 fourierdlem104 47164 sqwvfoura 47182 sqwvfourb 47183 elaa2lem 47187 etransclem24 47212 |
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