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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 9324 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | 1 | nnnn0i 9582 | 1 ⊢ 1 ∈ ℕ0 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 1c1 8186 ℕ0cn0 9574 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 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-ext 2220 ax-1re 8279 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-int 3971 df-inn 9314 df-n0 9575 |
| This theorem is used by: peano2nn0 9614 deccl 9802 11nn0 9803 12nn0 9804 16nn0 9805 10nn0 9809 11nn 9812 numsucc 9832 numadd 9839 numaddc 9840 11multnc 9860 6p5lem 9862 6p6e12 9866 7p5e12 9869 8p4e12 9874 9p2e11 9879 9p3e12 9880 10p10e20 9887 4t4e16 9891 5t2e10 9892 5t4e20 9894 6t3e18 9897 6t4e24 9898 7t3e21 9902 7t4e28 9903 8t3e24 9908 9t3e27 9915 9t9e81 9921 nn01to3 10033 fz0to3un2pr 10547 elfzom1elp1fzo 10637 fzo0sn0fzo1 10656 fldiv4lem1div2 10763 1tonninf 10899 expn1ap0 11007 nn0expcl 11011 sqval 11055 sq10 11172 nn0opthlem1d 11180 fac2 11191 bccl 11227 hashsng 11259 1elfz0hash 11269 snopiswrd 11336 wrdred1hash 11370 pfx1 11497 s3fv1g 11586 bcxmas 12281 arisum 12290 geoisum1 12311 geoisum1c 12312 cvgratnnlemsumlt 12320 mertenslem2 12328 fprodnn0cl 12404 ege2le3 12463 ef4p 12486 efgt1p2 12487 efgt1p 12488 sin01gt0 12554 dvds1 12645 3dvds2dec 12658 5ndvds6 12727 bitsmod 12748 bitsinv1lem 12753 isprm5 12946 pcelnn 13129 pockthg 13165 dec5nprm 13222 dec2nprm 13223 modxp1i 13226 2exp8 13244 2exp11 13245 2exp16 13246 2expltfac 13248 5prm 13252 11prm 13258 13prm 13259 17prm 13260 19prm 13261 23prm 13262 prmlem2 13263 37prm 13264 43prm 13265 83prm 13266 139prm 13267 163prm 13268 317prm 13269 631prm 13270 1259lem1 13271 1259lem2 13272 1259lem3 13273 1259lem4 13274 1259lem5 13275 1259prm 13276 ennnfonelemhom 13364 ocndx 13624 ocid 13625 basendxnocndx 13626 plendxnocndx 13627 dsndx 13628 dsid 13629 dsslid 13630 dsndxnn 13631 basendxltdsndx 13632 slotsdifdsndx 13638 unifndx 13639 unifid 13640 unifndxnn 13641 basendxltunifndx 13642 slotsdifunifndx 13645 homndx 13646 homid 13647 homslid 13648 ccondx 13649 ccoid 13650 ccoslid 13651 imasvalstrd 13678 prdsvalstrd 13679 cnfldstr 15004 dveflem 15952 plyid 15972 log2ublem3 16223 log2ublog2 16224 birthdaylog2 16228 ppi2 16274 1sgmprm 16288 ppiublem2 16292 chtublem 16295 perfectlem1 16299 perfectlem2 16300 bclbnd 16307 bpos1 16310 bposlem6 16316 2lgslem3a 16417 2lgslem3c 16419 edgfid 16452 edgfndx 16453 edgfndxnn 16454 basendxltedgfndx 16456 clwwlkccatlem 16846 umgr2cwwkdifex 16871 konigsbergiedgwen 16930 konigsberglem1 16934 konigsberglem2 16935 konigsberglem3 16936 konigsberglem4 16937 konigsberglem5 16938 konigsberg 16939 1kp2ke3k 16943 ex-exp 16946 ex-fac 16947 012of 17228 isomninnlem 17285 trilpolemisumle 17294 iswomninnlem 17306 iswomni0 17308 ismkvnnlem 17309 |
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