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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 14150 | . 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 2146 ≠ wne 2961 (class class class)co 7423 ℂcc 11116 0cc0 11118 ℤcz 12609 ↑cexp 14117 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 |
| 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 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-2nd 7996 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-er 8703 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 df-div 11890 df-nn 12252 df-n0 12523 df-z 12610 df-uz 12881 df-seq 14058 df-exp 14118 |
| This theorem is used by: znsqcld 14218 absexpz 15382 0.999... 15961 bitsfzo 16518 bitsmod 16519 bitsinv1lem 16524 bitsuz 16557 pcexp 16944 dvdsprmpweqle 16971 pcaddlem 16973 pcadd 16974 qexpz 16986 dvrecg 26169 dvexp3 26174 plyeq0lem 26404 aareccl 26526 taylthlem2 26574 root1cj 26958 cxpeq 26959 dcubic1lem 27045 dcubic2 27046 cubic2 27050 cubic 27051 lgamgulmlem4 27233 basellem4 27285 basellem8 27289 lgseisenlem1 27576 lgseisenlem2 27577 lgsquadlem1 27581 nrt2irr 30861 constrresqrtcl 34198 cos9thpiminplylem2 34204 dya2icoseg 34699 dya2iocucvr 34706 omssubadd 34722 oddpwdc 34776 signsplypnf 34969 signsply0 34970 knoppndvlem7 37148 knoppndvlem17 37158 dvrelogpow2b 42876 aks4d1p1p6 42881 aks4d1p1p7 42882 aks4d1p1p5 42883 aks4d1p8d3 42894 aks4d1p8 42895 aks6d1c2p2 42927 exp11d 43128 dffltz 43407 fltdiv 43409 fltnlta 43436 3cubeslem4 43461 rmxyneg 43688 radcnvrat 45065 dvdivbd 46678 iblsplit 46721 wallispi2lem1 46826 wallispi2lem2 46827 wallispi2 46828 stirlinglem3 46831 stirlinglem4 46832 stirlinglem7 46835 stirlinglem8 46836 stirlinglem10 46838 stirlinglem13 46841 stirlinglem14 46842 stirlinglem15 46843 fourierdlem56 46917 fourierdlem57 46918 elaa2lem 46988 sge0ad2en 47186 ovnsubaddlem1 47325 fldivexpfllog2 49386 nn0digval 49421 dignnld 49424 dig2nn1st 49426 dig2bits 49435 dignn0flhalflem1 49436 dignn0flhalflem2 49437 dignn0ehalf 49438 itsclc0xyqsolr 49590 |
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