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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 9340 |
. . 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 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: nnne0d 9358 divfnzn 10036 qreccl 10057 fzo1fzo0n0 10611 expnnval 10999 expnegap0 11004 hashnncl 11255 ef0lem 12451 dvdsval3 12582 nndivdvds 12587 modmulconst 12614 dvdsdivcl 12641 divalg2 12717 ndvdssub 12721 nndvdslegcd 12766 divgcdz 12772 divgcdnn 12776 gcdzeq 12823 eucalgf 12857 eucalginv 12858 lcmgcdlem 12879 qredeu 12899 cncongr1 12905 cncongr2 12906 divnumden 13000 divdenle 13001 phimullem 13031 hashgcdlem 13044 phisum 13047 prm23lt5 13070 pythagtriplem8 13079 pythagtriplem9 13080 pceu 13102 pccl 13106 pcdiv 13109 pcqcl 13113 pcdvds 13122 pcndvds 13124 pcndvds2 13126 pceq0 13129 pcz 13139 pcmpt 13150 fldivp1 13155 pcfac 13157 ennnfonelemjn 13350 mulgnn 13987 mulgnegnn 13993 znf1o 15094 znfi 15098 znhash 15099 znidomb 15101 znrrg 15103 dvexp2 15955 pellexlem1 16246 chtublem 16312 lgsval4a 16363 lgsabs1 16380 lgssq2 16382 |
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