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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 14217 | . 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 2145 ≠ wne 2956 (class class class)co 7412 ℂcc 11179 0cc0 11181 ℤcz 12674 ↑cexp 14184 |
| 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-cnex 11237 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-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 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-pred 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 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-om 7867 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 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 df-nn 12317 df-n0 12588 df-z 12675 df-uz 12947 df-seq 14125 df-exp 14185 |
| This theorem is used by: znsqcld 14285 absexpz 15452 0.999... 16030 bitsfzo 16585 bitsmod 16586 bitsinv1lem 16591 bitsuz 16624 pcexp 17017 dvdsprmpweqle 17044 pcaddlem 17046 pcadd 17047 qexpz 17059 dvrecg 26273 dvexp3 26278 plyeq0lem 26509 aareccl 26635 taylthlem2 26683 root1cj 27066 cxpeq 27067 dcubic1lem 27153 dcubic2 27154 cubic2 27158 cubic 27159 lgamgulmlem4 27341 basellem4 27393 basellem8 27397 lgseisenlem1 27684 lgseisenlem2 27685 lgsquadlem1 27689 fltdiv 27950 nrt2irr 31056 constrresqrtcl 34391 cos9thpiminplylem2 34397 dya2icoseg 34892 dya2iocucvr 34899 omssubadd 34915 oddpwdc 34969 signsplypnf 35162 signsply0 35163 knoppndvlem7 37354 knoppndvlem17 37364 dvrelogpow2b 43086 aks4d1p1p6 43091 aks4d1p1p7 43092 aks4d1p1p5 43093 aks4d1p8d3 43104 aks4d1p8 43105 aks6d1c2p2 43137 exp11d 43351 dffltz 43624 fltnlta 43628 3cubeslem4 43653 rmxyneg 43880 radcnvrat 45257 dvdivbd 46877 iblsplit 46920 wallispi2lem1 47025 wallispi2lem2 47026 wallispi2 47027 stirlinglem3 47030 stirlinglem4 47031 stirlinglem7 47034 stirlinglem8 47035 stirlinglem10 47037 stirlinglem13 47040 stirlinglem14 47041 stirlinglem15 47042 fourierdlem56 47116 fourierdlem57 47117 elaa2lem 47187 sge0ad2en 47385 ovnsubaddlem1 47524 fldivexpfllog2 49621 nn0digval 49656 dignnld 49659 dig2nn1st 49661 dig2bits 49670 dignn0flhalflem1 49671 dignn0flhalflem2 49672 dignn0ehalf 49673 itsclc0xyqsolr 49825 |
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