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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 9154 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | 1 | nnnn0i 9410 | 1 ⊢ 1 ∈ ℕ0 |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 1c1 8033 ℕ0cn0 9402 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-1re 8126 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-int 3929 df-inn 9144 df-n0 9403 |
| This theorem is referenced by: peano2nn0 9442 deccl 9625 10nn0 9628 numsucc 9650 numadd 9657 numaddc 9658 11multnc 9678 6p5lem 9680 6p6e12 9684 7p5e12 9687 8p4e12 9692 9p2e11 9697 9p3e12 9698 10p10e20 9705 4t4e16 9709 5t2e10 9710 5t4e20 9712 6t3e18 9715 6t4e24 9716 7t3e21 9720 7t4e28 9721 8t3e24 9726 9t3e27 9733 9t9e81 9739 nn01to3 9851 fz0to3un2pr 10358 elfzom1elp1fzo 10448 fzo0sn0fzo1 10467 fldiv4lem1div2 10568 1tonninf 10704 expn1ap0 10812 nn0expcl 10816 sqval 10860 sq10 10975 nn0opthlem1d 10983 fac2 10994 bccl 11030 hashsng 11061 1elfz0hash 11071 snopiswrd 11127 wrdred1hash 11161 pfx1 11288 s3fv1g 11377 bcxmas 12055 arisum 12064 geoisum1 12085 geoisum1c 12086 cvgratnnlemsumlt 12094 mertenslem2 12102 fprodnn0cl 12178 ege2le3 12237 ef4p 12260 efgt1p2 12261 efgt1p 12262 sin01gt0 12328 dvds1 12419 3dvds2dec 12432 5ndvds6 12501 bitsmod 12522 bitsinv1lem 12527 isprm5 12719 pcelnn 12899 pockthg 12935 dec5nprm 12992 dec2nprm 12993 modxp1i 12996 2exp8 13013 2exp11 13014 2exp16 13015 2expltfac 13017 ennnfonelemhom 13041 ocndx 13299 ocid 13300 basendxnocndx 13301 plendxnocndx 13302 dsndx 13303 dsid 13304 dsslid 13305 dsndxnn 13306 basendxltdsndx 13307 slotsdifdsndx 13313 unifndx 13314 unifid 13315 unifndxnn 13316 basendxltunifndx 13317 slotsdifunifndx 13320 homndx 13321 homid 13322 homslid 13323 ccondx 13324 ccoid 13325 ccoslid 13326 imasvalstrd 13358 prdsvalstrd 13359 cnfldstr 14578 dveflem 15456 plyid 15476 1sgmprm 15724 perfectlem1 15729 perfectlem2 15730 2lgslem3a 15828 2lgslem3c 15830 edgfid 15863 edgfndx 15864 edgfndxnn 15865 basendxltedgfndx 15867 clwwlkccatlem 16257 umgr2cwwkdifex 16282 1kp2ke3k 16342 ex-exp 16345 ex-fac 16346 012of 16618 isomninnlem 16660 trilpolemisumle 16668 iswomninnlem 16680 iswomni0 16682 ismkvnnlem 16683 |
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