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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 9332 | . 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 8179 ℕcn 9304 |
| 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 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8270 ax-resscn 8271 ax-1re 8273 ax-addrcl 8276 ax-0lt1 8285 ax-0id 8287 ax-rnegex 8288 ax-pre-ltirr 8291 ax-pre-lttrn 8293 ax-pre-ltadd 8295 |
| 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 4131 df-opab 4193 df-xp 4780 df-cnv 4782 df-iota 5337 df-fv 5385 df-ov 6088 df-pnf 8362 df-mnf 8363 df-xr 8364 df-ltxr 8365 df-le 8366 df-inn 9305 |
| This theorem is used by: eluz2n0 9971 flqdiv 10758 modsumfzodifsn 10833 facne0 11175 bitsmod 12723 gcdnncl 12744 gcdeq0 12754 dvdsgcdidd 12771 mulgcd 12793 sqgcd 12806 lcmeq0 12849 lcmgcdlem 12855 qredeu 12875 cncongr1 12881 prmind2 12898 isprm5lem 12919 divgcdodd 12921 oddpwdclemxy 12947 oddpwdclemodd 12950 divnumden 12974 hashdvds 12999 pythagtriplem4 13047 pythagtriplem19 13061 pcprendvds2 13070 pcpremul 13072 pceulem 13073 pcqmul 13082 pc2dvds 13109 pcaddlem 13118 pcadd 13119 pcmpt2 13123 pcmptdvds 13124 pcbc 13130 expnprm 13132 prmpwdvds 13134 pockthlem 13135 4sqlem8 13164 4sqlem9 13165 4sqlem10 13166 4sqlem12 13181 4sqlem14 13183 4sqlem17 13186 znrrg 14995 dvply1 15866 mpodvdsmulf1o 16104 lgsval2lem 16129 lgsquad2lem1 16200 2sqlem3 16236 2sqlem8 16242 clwwlknonex2 16680 depindlem1 16747 |
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