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| Mirrors > Home > ILE Home > Th. List > nnne0d | GIF version | ||
| Description: A positive integer is nonzero. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| nnge1d.1 | ⊢ (𝜑 → 𝐴 ∈ ℕ) |
| Ref | Expression |
|---|---|
| nnne0d | ⊢ (𝜑 → 𝐴 ≠ 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnge1d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℕ) | |
| 2 | nnne0 9341 | . 2 ⊢ (𝐴 ∈ ℕ → 𝐴 ≠ 0) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → 𝐴 ≠ 0) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 ≠ wne 2420 0cc0 8185 ℕcn 9313 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-cnex 8276 ax-resscn 8277 ax-1re 8279 ax-addrcl 8282 ax-0lt1 8291 ax-0id 8293 ax-rnegex 8294 ax-pre-ltirr 8297 ax-pre-lttrn 8299 ax-pre-ltadd 8301 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4132 df-opab 4194 df-xp 4782 df-cnv 4784 df-iota 5340 df-fv 5388 df-ov 6091 df-pnf 8368 df-mnf 8369 df-xr 8370 df-ltxr 8371 df-le 8372 df-inn 9314 |
| This theorem is used by: eluz2n0 9987 flqdiv 10779 modsumfzodifsn 10854 facne0 11197 bitsmod 12748 gcdnncl 12769 gcdeq0 12779 dvdsgcdidd 12796 mulgcd 12818 sqgcd 12831 lcmeq0 12874 lcmgcdlem 12880 qredeu 12900 cncongr1 12906 prmind2 12923 isprm5lem 12945 divgcdodd 12947 nnmaxpwlemxy 12973 nnmaxpwlemnfac 12976 divnumden 13001 hashdvds 13028 pythagtriplem4 13076 pythagtriplem19 13090 pcprendvds2 13099 pcpremul 13101 pceulem 13102 pcqmul 13111 pc2dvds 13138 pcaddlem 13147 pcadd 13148 pcmpt2 13152 pcmptdvds 13153 pcbc 13159 expnprm 13161 prmpwdvds 13163 pockthlem 13164 4sqlem8 13193 4sqlem9 13194 4sqlem10 13195 4sqlem12 13210 4sqlem14 13212 4sqlem17 13215 znrrg 15104 dvply1 15991 efchtqdvds 16265 ppiqeq0 16280 mpodvdsmulf1o 16284 bposlem6 16316 lgsval2lem 16334 lgsquad2lem1 16405 2sqlem3 16441 2sqlem8 16447 clwwlknonex2 16885 depindlem1 16952 |
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