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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 9142 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | 1 | nnnn0i 9398 | 1 ⊢ 1 ∈ ℕ0 |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 1c1 8021 ℕ0cn0 9390 |
| 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 8114 |
| 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 3925 df-inn 9132 df-n0 9391 |
| This theorem is referenced by: peano2nn0 9430 deccl 9613 10nn0 9616 numsucc 9638 numadd 9645 numaddc 9646 11multnc 9666 6p5lem 9668 6p6e12 9672 7p5e12 9675 8p4e12 9680 9p2e11 9685 9p3e12 9686 10p10e20 9693 4t4e16 9697 5t2e10 9698 5t4e20 9700 6t3e18 9703 6t4e24 9704 7t3e21 9708 7t4e28 9709 8t3e24 9714 9t3e27 9721 9t9e81 9727 nn01to3 9839 fz0to3un2pr 10346 elfzom1elp1fzo 10435 fzo0sn0fzo1 10454 fldiv4lem1div2 10555 1tonninf 10691 expn1ap0 10799 nn0expcl 10803 sqval 10847 sq10 10962 nn0opthlem1d 10970 fac2 10981 bccl 11017 hashsng 11048 1elfz0hash 11057 snopiswrd 11110 wrdred1hash 11144 pfx1 11271 s3fv1g 11360 bcxmas 12037 arisum 12046 geoisum1 12067 geoisum1c 12068 cvgratnnlemsumlt 12076 mertenslem2 12084 fprodnn0cl 12160 ege2le3 12219 ef4p 12242 efgt1p2 12243 efgt1p 12244 sin01gt0 12310 dvds1 12401 3dvds2dec 12414 5ndvds6 12483 bitsmod 12504 bitsinv1lem 12509 isprm5 12701 pcelnn 12881 pockthg 12917 dec5nprm 12974 dec2nprm 12975 modxp1i 12978 2exp8 12995 2exp11 12996 2exp16 12997 2expltfac 12999 ennnfonelemhom 13023 ocndx 13281 ocid 13282 basendxnocndx 13283 plendxnocndx 13284 dsndx 13285 dsid 13286 dsslid 13287 dsndxnn 13288 basendxltdsndx 13289 slotsdifdsndx 13295 unifndx 13296 unifid 13297 unifndxnn 13298 basendxltunifndx 13299 slotsdifunifndx 13302 homndx 13303 homid 13304 homslid 13305 ccondx 13306 ccoid 13307 ccoslid 13308 imasvalstrd 13340 prdsvalstrd 13341 cnfldstr 14559 dveflem 15437 plyid 15457 1sgmprm 15705 perfectlem1 15710 perfectlem2 15711 2lgslem3a 15809 2lgslem3c 15811 edgfid 15844 edgfndx 15845 edgfndxnn 15846 basendxltedgfndx 15848 clwwlkccatlem 16185 umgr2cwwkdifex 16210 1kp2ke3k 16230 ex-exp 16233 ex-fac 16234 012of 16502 isomninnlem 16544 trilpolemisumle 16552 iswomninnlem 16563 iswomni0 16565 ismkvnnlem 16566 |
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