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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 14267 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0 ∧ 𝑁 ∈ ℤ) → (𝐴↑𝑁) ≠ 0) | |
| 5 | 1, 2, 3, 4 | syl3anc 1399 | 1 ⊢ (𝜑 → (𝐴↑𝑁) ≠ 0) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2147 ≠ wne 2959 (class class class)co 7446 ℂcc 11228 0cc0 11230 ℤcz 12723 ↑cexp 14234 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-cnex 11286 ax-resscn 11287 ax-1cn 11288 ax-icn 11289 ax-addcl 11290 ax-addrcl 11291 ax-mulcl 11292 ax-mulrcl 11293 ax-mulcom 11294 ax-addass 11295 ax-mulass 11296 ax-distr 11297 ax-i2m1 11298 ax-1ne0 11299 ax-1rid 11300 ax-rnegex 11301 ax-rrecex 11302 ax-cnre 11303 ax-pre-lttri 11304 ax-pre-lttrn 11305 ax-pre-ltadd 11306 ax-pre-mulgt0 11307 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-om 7905 df-2nd 8029 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-rdg 8449 df-er 8748 df-en 9005 df-dom 9006 df-sdom 9007 df-pnf 11375 df-mnf 11376 df-xr 11377 df-ltxr 11378 df-le 11379 df-sub 11573 df-neg 11574 df-div 12004 df-nn 12366 df-n0 12637 df-z 12724 df-uz 12996 df-seq 14175 df-exp 14235 |
| This theorem is used by: znsqcld 14335 absexpz 15504 0.999... 16082 bitsfzo 16637 bitsmod 16638 bitsinv1lem 16643 bitsuz 16676 pcexp 17069 dvdsprmpweqle 17096 pcaddlem 17098 pcadd 17099 qexpz 17111 dvrecg 26326 dvexp3 26331 plyeq0lem 26562 aareccl 26686 taylthlem2 26734 root1cj 27117 cxpeq 27118 dcubic1lem 27204 dcubic2 27205 cubic2 27209 cubic 27210 lgamgulmlem4 27392 basellem4 27444 basellem8 27448 lgseisenlem1 27735 lgseisenlem2 27736 lgsquadlem1 27740 fltdiv 28001 flt4lem5e 28019 nrt2irr 31107 constrresqrtcl 34492 cos9thpiminplylem2 34498 dya2icoseg 34992 dya2iocucvr 34999 omssubadd 35015 oddpwdc 35069 signsplypnf 35262 signsply0 35263 knoppndvlem7 37575 knoppndvlem17 37585 dvrelogpow2b 43321 aks4d1p1p6 43326 aks4d1p1p7 43327 aks4d1p1p5 43328 aks4d1p8d3 43339 aks4d1p8 43340 aks6d1c2p2 43372 exp11d 43587 dffltz 43874 fltnlta 43878 3cubeslem4 43903 rmxyneg 44131 radcnvrat 45501 dvdivbd 47148 iblsplit 47191 wallispi2lem1 47296 wallispi2lem2 47297 wallispi2 47298 stirlinglem3 47301 stirlinglem4 47302 stirlinglem7 47305 stirlinglem8 47306 stirlinglem10 47308 stirlinglem13 47311 stirlinglem14 47312 stirlinglem15 47313 fourierdlem56 47387 fourierdlem57 47388 elaa2lem 47458 sge0ad2en 47656 ovnsubaddlem1 47795 fldivexpfllog2 49892 nn0digval 49927 dignnld 49930 dig2nn1st 49932 dig2bits 49941 dignn0flhalflem1 49942 dignn0flhalflem2 49943 dignn0ehalf 49944 itsclc0xyqsolr 50096 |
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