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| Mirrors > Home > MPE Home > Th. List > expne0d | Structured version Visualization version GIF version | ||
| Description: A nonnegative integer power is nonzero if its base is nonzero. (Contributed by Mario Carneiro, 28-May-2016.) |
| Ref | Expression |
|---|---|
| expcld.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| sqrecd.1 | ⊢ (𝜑 → 𝐴 ≠ 0) |
| expclzd.3 | ⊢ (𝜑 → 𝑁 ∈ ℤ) |
| Ref | Expression |
|---|---|
| expne0d | ⊢ (𝜑 → (𝐴↑𝑁) ≠ 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | expcld.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 2 | sqrecd.1 | . 2 ⊢ (𝜑 → 𝐴 ≠ 0) | |
| 3 | expclzd.3 | . 2 ⊢ (𝜑 → 𝑁 ∈ ℤ) | |
| 4 | expne0i 14240 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ∧ 𝑁 ∈ ℤ) → (𝐴↑𝑁) ≠ 0) | |
| 5 | 1, 2, 3, 4 | syl3anc 1398 | 1 ⊢ (𝜑 → (𝐴↑𝑁) ≠ 0) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 ≠ wne 2955 (class class class)co 7420 ℂcc 11201 0cc0 11203 ℤcz 12696 ↑cexp 14207 |
| 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-cnex 11259 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 ax-pre-mulgt0 11280 |
| 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-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 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-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 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-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 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-om 7878 df-2nd 8002 df-frecs 8302 df-wrecs 8333 df-recs 8382 df-rdg 8421 df-er 8720 df-en 8977 df-dom 8978 df-sdom 8979 df-pnf 11348 df-mnf 11349 df-xr 11350 df-ltxr 11351 df-le 11352 df-sub 11546 df-neg 11547 df-div 11977 df-nn 12339 df-n0 12610 df-z 12697 df-uz 12969 df-seq 14148 df-exp 14208 |
| This theorem is used by: znsqcld 14308 absexpz 15477 0.999... 16055 bitsfzo 16610 bitsmod 16611 bitsinv1lem 16616 bitsuz 16649 pcexp 17042 dvdsprmpweqle 17069 pcaddlem 17071 pcadd 17072 qexpz 17084 dvrecg 26298 dvexp3 26303 plyeq0lem 26534 aareccl 26658 taylthlem2 26706 root1cj 27089 cxpeq 27090 dcubic1lem 27176 dcubic2 27177 cubic2 27181 cubic 27182 lgamgulmlem4 27364 basellem4 27416 basellem8 27420 lgseisenlem1 27707 lgseisenlem2 27708 lgsquadlem1 27712 fltdiv 27973 flt4lem5e 27991 nrt2irr 31079 constrresqrtcl 34455 cos9thpiminplylem2 34461 dya2icoseg 34955 dya2iocucvr 34962 omssubadd 34978 oddpwdc 35032 signsplypnf 35225 signsply0 35226 knoppndvlem7 37476 knoppndvlem17 37486 dvrelogpow2b 43211 aks4d1p1p6 43216 aks4d1p1p7 43217 aks4d1p1p5 43218 aks4d1p8d3 43229 aks4d1p8 43230 aks6d1c2p2 43262 exp11d 43476 dffltz 43763 fltnlta 43767 3cubeslem4 43792 rmxyneg 44020 radcnvrat 45391 dvdivbd 47026 iblsplit 47069 wallispi2lem1 47174 wallispi2lem2 47175 wallispi2 47176 stirlinglem3 47179 stirlinglem4 47180 stirlinglem7 47183 stirlinglem8 47184 stirlinglem10 47186 stirlinglem13 47189 stirlinglem14 47190 stirlinglem15 47191 fourierdlem56 47265 fourierdlem57 47266 elaa2lem 47336 sge0ad2en 47534 ovnsubaddlem1 47673 fldivexpfllog2 49770 nn0digval 49805 dignnld 49808 dig2nn1st 49810 dig2bits 49819 dignn0flhalflem1 49820 dignn0flhalflem2 49821 dignn0ehalf 49822 itsclc0xyqsolr 49974 |
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