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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 8750 | . . 3 | |
2 | eleq1 2202 | . . 3 | |
3 | 1, 2 | mtbiri 664 | . 2 |
4 | 3 | necon2ai 2362 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wceq 1331 wcel 1480 wne 2308 cc0 7623 cn 8723 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 ax-un 4355 ax-setind 4452 ax-cnex 7714 ax-resscn 7715 ax-1re 7717 ax-addrcl 7720 ax-0lt1 7729 ax-0id 7731 ax-rnegex 7732 ax-pre-ltirr 7735 ax-pre-lttrn 7737 ax-pre-ltadd 7739 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ne 2309 df-nel 2404 df-ral 2421 df-rex 2422 df-rab 2425 df-v 2688 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-int 3772 df-br 3930 df-opab 3990 df-xp 4545 df-cnv 4547 df-iota 5088 df-fv 5131 df-ov 5777 df-pnf 7805 df-mnf 7806 df-xr 7807 df-ltxr 7808 df-le 7809 df-inn 8724 |
This theorem is referenced by: nnne0d 8768 divfnzn 9416 qreccl 9437 fzo1fzo0n0 9963 expnnval 10299 expnegap0 10304 hashnncl 10545 ef0lem 11369 dvdsval3 11500 nndivdvds 11502 modmulconst 11528 dvdsdivcl 11551 divalg2 11626 ndvdssub 11630 nndvdslegcd 11657 divgcdz 11663 divgcdnn 11666 gcdzeq 11713 eucalgf 11739 eucalginv 11740 lcmgcdlem 11761 qredeu 11781 cncongr1 11787 cncongr2 11788 divnumden 11877 divdenle 11878 phimullem 11904 hashgcdlem 11906 ennnfonelemjn 11918 dvexp2 12848 |
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