![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > 3nn | Structured version Visualization version GIF version |
Description: 3 is a positive integer. (Contributed by NM, 8-Jan-2006.) |
Ref | Expression |
---|---|
3nn | ⊢ 3 ∈ ℕ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-3 12216 | . 2 ⊢ 3 = (2 + 1) | |
2 | 2nn 12225 | . . 3 ⊢ 2 ∈ ℕ | |
3 | peano2nn 12164 | . . 3 ⊢ (2 ∈ ℕ → (2 + 1) ∈ ℕ) | |
4 | 2, 3 | ax-mp 5 | . 2 ⊢ (2 + 1) ∈ ℕ |
5 | 1, 4 | eqeltri 2834 | 1 ⊢ 3 ∈ ℕ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2106 (class class class)co 7356 1c1 11051 + caddc 11053 ℕcn 12152 2c2 12207 3c3 12208 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2707 ax-sep 5256 ax-nul 5263 ax-pr 5384 ax-un 7671 ax-1cn 11108 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2889 df-ne 2944 df-ral 3065 df-rex 3074 df-reu 3354 df-rab 3408 df-v 3447 df-sbc 3740 df-csb 3856 df-dif 3913 df-un 3915 df-in 3917 df-ss 3927 df-pss 3929 df-nul 4283 df-if 4487 df-pw 4562 df-sn 4587 df-pr 4589 df-op 4593 df-uni 4866 df-iun 4956 df-br 5106 df-opab 5168 df-mpt 5189 df-tr 5223 df-id 5531 df-eprel 5537 df-po 5545 df-so 5546 df-fr 5588 df-we 5590 df-xp 5639 df-rel 5640 df-cnv 5641 df-co 5642 df-dm 5643 df-rn 5644 df-res 5645 df-ima 5646 df-pred 6253 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6498 df-fn 6499 df-f 6500 df-f1 6501 df-fo 6502 df-f1o 6503 df-fv 6504 df-ov 7359 df-om 7802 df-2nd 7921 df-frecs 8211 df-wrecs 8242 df-recs 8316 df-rdg 8355 df-nn 12153 df-2 12215 df-3 12216 |
This theorem is referenced by: 4nn 12235 3nn0 12430 3z 12535 ige3m2fz 13464 f1oun2prg 14805 01sqrexlem7 15132 bpoly4 15941 fsumcube 15942 sin01bnd 16066 egt2lt3 16087 rpnnen2lem2 16096 rpnnen2lem3 16097 rpnnen2lem4 16098 rpnnen2lem9 16103 rpnnen2lem11 16105 3lcm2e6woprm 16490 3lcm2e6 16606 prmo3 16912 5prm 16980 6nprm 16981 7prm 16982 9nprm 16984 11prm 16986 13prm 16987 17prm 16988 19prm 16989 23prm 16990 prmlem2 16991 37prm 16992 43prm 16993 83prm 16994 139prm 16995 163prm 16996 317prm 16997 631prm 16998 1259lem5 17006 2503lem1 17008 2503lem2 17009 2503lem3 17010 4001lem4 17015 4001prm 17016 mulrndx 17173 mulrid 17174 rngstr 17178 unifndx 17275 unifid 17276 unifndxnn 17277 slotsdifunifndx 17281 lt6abl 19670 sramulrOLD 20643 cnfldstr 20796 cnfldfunALTOLD 20808 zlmmulrOLD 20922 znmulOLD 20946 opsrmulrOLD 21455 tuslemOLD 23617 tngmulrOLD 24002 tangtx 25860 1cubrlem 26189 1cubr 26190 dcubic1lem 26191 dcubic2 26192 dcubic 26194 mcubic 26195 cubic2 26196 cubic 26197 quartlem3 26207 quart 26209 log2cnv 26292 log2tlbnd 26293 log2ublem1 26294 log2ublem2 26295 log2ub 26297 ppiublem1 26548 ppiub 26550 chtub 26558 bposlem3 26632 bposlem4 26633 bposlem5 26634 bposlem6 26635 bposlem9 26638 lgsdir2lem5 26675 dchrvmasumlem2 26844 dchrvmasumlema 26846 pntleml 26957 tgcgr4 27420 axlowdimlem16 27853 axlowdimlem17 27854 usgrexmpldifpr 28153 upgr3v3e3cycl 29071 ex-cnv 29328 ex-rn 29331 ex-mod 29340 resvmulrOLD 32075 fib4 32944 circlevma 33195 circlemethhgt 33196 hgt750lema 33210 sinccvglem 34200 cnndvlem1 34990 mblfinlem3 36107 itg2addnclem2 36120 itg2addnc 36122 hlhilsmulOLD 40398 lcm3un 40462 aks4d1p1 40523 3cubeslem2 40985 3cubeslem3r 40987 3cubes 40990 rmydioph 41315 rmxdioph 41317 expdiophlem2 41323 expdioph 41324 amgm3d 42453 lhe4.4ex1a 42590 257prm 45724 fmtno4prmfac193 45736 fmtno4nprmfac193 45737 3ndvds4 45758 139prmALT 45759 31prm 45760 127prm 45762 41prothprm 45782 341fppr2 45897 nfermltl2rev 45906 wtgoldbnnsum4prm 45965 bgoldbnnsum3prm 45967 bgoldbtbndlem1 45968 tgoldbach 45980 |
Copyright terms: Public domain | W3C validator |