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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 9318 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | 1 | nnnn0i 9576 | 1 ⊢ 1 ∈ ℕ0 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 1c1 8181 ℕ0cn0 9568 |
| 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 8274 |
| 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 9308 df-n0 9569 |
| This theorem is used by: peano2nn0 9608 deccl 9796 11nn0 9797 12nn0 9798 16nn0 9799 10nn0 9803 11nn 9806 numsucc 9826 numadd 9833 numaddc 9834 11multnc 9854 6p5lem 9856 6p6e12 9860 7p5e12 9863 8p4e12 9868 9p2e11 9873 9p3e12 9874 10p10e20 9881 4t4e16 9885 5t2e10 9886 5t4e20 9888 6t3e18 9891 6t4e24 9892 7t3e21 9896 7t4e28 9897 8t3e24 9902 9t3e27 9909 9t9e81 9915 nn01to3 10027 fz0to3un2pr 10541 elfzom1elp1fzo 10631 fzo0sn0fzo1 10650 fldiv4lem1div2 10757 1tonninf 10893 expn1ap0 11001 nn0expcl 11005 sqval 11049 sq10 11166 nn0opthlem1d 11174 fac2 11185 bccl 11221 hashsng 11253 1elfz0hash 11263 snopiswrd 11330 wrdred1hash 11364 pfx1 11491 s3fv1g 11580 bcxmas 12275 arisum 12284 geoisum1 12305 geoisum1c 12306 cvgratnnlemsumlt 12314 mertenslem2 12322 fprodnn0cl 12398 ege2le3 12457 ef4p 12480 efgt1p2 12481 efgt1p 12482 sin01gt0 12548 dvds1 12639 3dvds2dec 12652 5ndvds6 12721 bitsmod 12742 bitsinv1lem 12747 isprm5 12940 pcelnn 13123 pockthg 13159 dec5nprm 13216 dec2nprm 13217 modxp1i 13220 2exp8 13238 2exp11 13239 2exp16 13240 2expltfac 13242 5prm 13246 11prm 13252 13prm 13253 17prm 13254 19prm 13255 23prm 13256 prmlem2 13257 37prm 13258 43prm 13259 83prm 13260 139prm 13261 163prm 13262 317prm 13263 631prm 13264 1259lem1 13265 1259lem2 13266 1259lem3 13267 1259lem4 13268 1259lem5 13269 1259prm 13270 ennnfonelemhom 13358 ocndx 13618 ocid 13619 basendxnocndx 13620 plendxnocndx 13621 dsndx 13622 dsid 13623 dsslid 13624 dsndxnn 13625 basendxltdsndx 13626 slotsdifdsndx 13632 unifndx 13633 unifid 13634 unifndxnn 13635 basendxltunifndx 13636 slotsdifunifndx 13639 homndx 13640 homid 13641 homslid 13642 ccondx 13643 ccoid 13644 ccoslid 13645 imasvalstrd 13672 prdsvalstrd 13673 cnfldstr 14979 dveflem 15918 plyid 15938 log2ublem3 16184 log2ublog2 16185 birthdaylog2 16189 ppi2 16235 1sgmprm 16249 ppiublem2 16253 chtublem 16256 perfectlem1 16260 perfectlem2 16261 bclbnd 16268 bpos1 16271 bposlem6 16277 2lgslem3a 16378 2lgslem3c 16380 edgfid 16413 edgfndx 16414 edgfndxnn 16415 basendxltedgfndx 16417 clwwlkccatlem 16807 umgr2cwwkdifex 16832 konigsbergiedgwen 16891 konigsberglem1 16895 konigsberglem2 16896 konigsberglem3 16897 konigsberglem4 16898 konigsberglem5 16899 konigsberg 16900 1kp2ke3k 16904 ex-exp 16907 ex-fac 16908 012of 17189 isomninnlem 17245 trilpolemisumle 17254 iswomninnlem 17266 iswomni0 17268 ismkvnnlem 17269 |
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