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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 9334 |
. . 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 8271 ax-resscn 8272 ax-1re 8274 ax-addrcl 8277 ax-0lt1 8286 ax-0id 8288 ax-rnegex 8289 ax-pre-ltirr 8292 ax-pre-lttrn 8294 ax-pre-ltadd 8296 |
| 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 8363 df-mnf 8364 df-xr 8365 df-ltxr 8366 df-le 8367 df-inn 9308 |
| This theorem is used by: nnne0d 9352 divfnzn 10031 qreccl 10052 fzo1fzo0n0 10606 expnnval 10994 expnegap0 10999 hashnncl 11250 ef0lem 12446 dvdsval3 12577 nndivdvds 12582 modmulconst 12609 dvdsdivcl 12636 divalg2 12712 ndvdssub 12716 nndvdslegcd 12761 divgcdz 12767 divgcdnn 12771 gcdzeq 12818 eucalgf 12852 eucalginv 12853 lcmgcdlem 12874 qredeu 12894 cncongr1 12900 cncongr2 12901 divnumden 12995 divdenle 12996 phimullem 13026 hashgcdlem 13039 phisum 13042 prm23lt5 13065 pythagtriplem8 13074 pythagtriplem9 13075 pceu 13097 pccl 13101 pcdiv 13104 pcqcl 13108 pcdvds 13117 pcndvds 13119 pcndvds2 13121 pceq0 13124 pcz 13134 pcmpt 13145 fldivp1 13150 pcfac 13152 ennnfonelemjn 13345 mulgnn 13982 mulgnegnn 13988 znf1o 15070 znfi 15074 znhash 15075 znidomb 15077 znrrg 15079 dvexp2 15904 pellexlem1 16190 chtublem 16256 lgsval4a 16307 lgsabs1 16324 lgssq2 16326 |
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