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| Mirrors > Home > ILE Home > Th. List > 1nn0 | GIF version | ||
| Description: 1 is a nonnegative integer. (Contributed by Raph Levien, 10-Dec-2002.) |
| Ref | Expression |
|---|---|
| 1nn0 | ⊢ 1 ∈ ℕ0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1nn 9144 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | 1 | nnnn0i 9400 | 1 ⊢ 1 ∈ ℕ0 |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 1c1 8023 ℕ0cn0 9392 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-1re 8116 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-v 2802 df-un 3202 df-in 3204 df-ss 3211 df-int 3927 df-inn 9134 df-n0 9393 |
| This theorem is referenced by: peano2nn0 9432 deccl 9615 10nn0 9618 numsucc 9640 numadd 9647 numaddc 9648 11multnc 9668 6p5lem 9670 6p6e12 9674 7p5e12 9677 8p4e12 9682 9p2e11 9687 9p3e12 9688 10p10e20 9695 4t4e16 9699 5t2e10 9700 5t4e20 9702 6t3e18 9705 6t4e24 9706 7t3e21 9710 7t4e28 9711 8t3e24 9716 9t3e27 9723 9t9e81 9729 nn01to3 9841 fz0to3un2pr 10348 elfzom1elp1fzo 10437 fzo0sn0fzo1 10456 fldiv4lem1div2 10557 1tonninf 10693 expn1ap0 10801 nn0expcl 10805 sqval 10849 sq10 10964 nn0opthlem1d 10972 fac2 10983 bccl 11019 hashsng 11050 1elfz0hash 11060 snopiswrd 11113 wrdred1hash 11147 pfx1 11274 s3fv1g 11363 bcxmas 12040 arisum 12049 geoisum1 12070 geoisum1c 12071 cvgratnnlemsumlt 12079 mertenslem2 12087 fprodnn0cl 12163 ege2le3 12222 ef4p 12245 efgt1p2 12246 efgt1p 12247 sin01gt0 12313 dvds1 12404 3dvds2dec 12417 5ndvds6 12486 bitsmod 12507 bitsinv1lem 12512 isprm5 12704 pcelnn 12884 pockthg 12920 dec5nprm 12977 dec2nprm 12978 modxp1i 12981 2exp8 12998 2exp11 12999 2exp16 13000 2expltfac 13002 ennnfonelemhom 13026 ocndx 13284 ocid 13285 basendxnocndx 13286 plendxnocndx 13287 dsndx 13288 dsid 13289 dsslid 13290 dsndxnn 13291 basendxltdsndx 13292 slotsdifdsndx 13298 unifndx 13299 unifid 13300 unifndxnn 13301 basendxltunifndx 13302 slotsdifunifndx 13305 homndx 13306 homid 13307 homslid 13308 ccondx 13309 ccoid 13310 ccoslid 13311 imasvalstrd 13343 prdsvalstrd 13344 cnfldstr 14562 dveflem 15440 plyid 15460 1sgmprm 15708 perfectlem1 15713 perfectlem2 15714 2lgslem3a 15812 2lgslem3c 15814 edgfid 15847 edgfndx 15848 edgfndxnn 15849 basendxltedgfndx 15851 clwwlkccatlem 16195 umgr2cwwkdifex 16220 1kp2ke3k 16256 ex-exp 16259 ex-fac 16260 012of 16528 isomninnlem 16570 trilpolemisumle 16578 iswomninnlem 16589 iswomni0 16591 ismkvnnlem 16592 |
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