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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 10037 qreccl 10058 fzo1fzo0n0 10612 expnnval 11000 expnegap0 11005 hashnncl 11256 ef0lem 12452 dvdsval3 12583 nndivdvds 12588 modmulconst 12615 dvdsdivcl 12642 divalg2 12718 ndvdssub 12722 nndvdslegcd 12767 divgcdz 12773 divgcdnn 12777 gcdzeq 12824 eucalgf 12858 eucalginv 12859 lcmgcdlem 12880 qredeu 12900 cncongr1 12906 cncongr2 12907 divnumden 13001 divdenle 13002 phimullem 13032 hashgcdlem 13045 phisum 13048 prm23lt5 13071 pythagtriplem8 13080 pythagtriplem9 13081 pceu 13103 pccl 13107 pcdiv 13110 pcqcl 13114 pcdvds 13123 pcndvds 13125 pcndvds2 13127 pceq0 13130 pcz 13140 pcmpt 13151 fldivp1 13156 pcfac 13158 ennnfonelemjn 13351 mulgnn 13988 mulgnegnn 13994 znf1o 15095 znfi 15099 znhash 15100 znidomb 15102 znrrg 15104 dvexp2 15938 pellexlem1 16229 chtublem 16295 lgsval4a 16346 lgsabs1 16363 lgssq2 16365 |
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