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| Mirrors > Home > ILE Home > Th. List > nnne0 | Unicode version | ||
| Description: A positive integer is nonzero. (Contributed by NM, 27-Sep-1999.) |
| Ref | Expression |
|---|---|
| nnne0 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0nnn 9331 |
. . 3
| |
| 2 | eleq1 2301 |
. . 3
| |
| 3 | 1, 2 | mtbiri 686 |
. 2
|
| 4 | 3 | necon2ai 2474 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| 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: nnne0d 9349 divfnzn 10021 qreccl 10042 fzo1fzo0n0 10595 expnnval 10979 expnegap0 10984 hashnncl 11234 ef0lem 12427 dvdsval3 12558 nndivdvds 12563 modmulconst 12590 dvdsdivcl 12617 divalg2 12693 ndvdssub 12697 nndvdslegcd 12742 divgcdz 12748 divgcdnn 12752 gcdzeq 12799 eucalgf 12833 eucalginv 12834 lcmgcdlem 12855 qredeu 12875 cncongr1 12881 cncongr2 12882 divnumden 12974 divdenle 12975 phimullem 13003 hashgcdlem 13016 phisum 13019 prm23lt5 13042 pythagtriplem8 13051 pythagtriplem9 13052 pceu 13074 pccl 13078 pcdiv 13081 pcqcl 13085 pcdvds 13094 pcndvds 13096 pcndvds2 13098 pceq0 13101 pcz 13111 pcmpt 13122 fldivp1 13127 pcfac 13129 ennnfonelemjn 13293 mulgnn 13929 mulgnegnn 13935 znf1o 14986 znfi 14990 znhash 14991 znidomb 14993 znrrg 14995 dvexp2 15813 pellexlem1 16091 lgsval4a 16141 lgsabs1 16158 lgssq2 16160 |
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