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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 11700 | . 2 ⊢ 3 = (2 + 1) | |
2 | 2nn 11709 | . . 3 ⊢ 2 ∈ ℕ | |
3 | peano2nn 11649 | . . 3 ⊢ (2 ∈ ℕ → (2 + 1) ∈ ℕ) | |
4 | 2, 3 | ax-mp 5 | . 2 ⊢ (2 + 1) ∈ ℕ |
5 | 1, 4 | eqeltri 2909 | 1 ⊢ 3 ∈ ℕ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2110 (class class class)co 7155 1c1 10537 + caddc 10539 ℕcn 11637 2c2 11691 3c3 11692 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5202 ax-nul 5209 ax-pow 5265 ax-pr 5329 ax-un 7460 ax-1cn 10594 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-pss 3953 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4838 df-iun 4920 df-br 5066 df-opab 5128 df-mpt 5146 df-tr 5172 df-id 5459 df-eprel 5464 df-po 5473 df-so 5474 df-fr 5513 df-we 5515 df-xp 5560 df-rel 5561 df-cnv 5562 df-co 5563 df-dm 5564 df-rn 5565 df-res 5566 df-ima 5567 df-pred 6147 df-ord 6193 df-on 6194 df-lim 6195 df-suc 6196 df-iota 6313 df-fun 6356 df-fn 6357 df-f 6358 df-f1 6359 df-fo 6360 df-f1o 6361 df-fv 6362 df-ov 7158 df-om 7580 df-wrecs 7946 df-recs 8007 df-rdg 8045 df-nn 11638 df-2 11699 df-3 11700 |
This theorem is referenced by: 4nn 11719 3nn0 11914 3z 12014 ige3m2fz 12930 f1oun2prg 14278 sqrlem7 14607 bpoly4 15412 fsumcube 15413 sin01bnd 15537 egt2lt3 15558 rpnnen2lem2 15567 rpnnen2lem3 15568 rpnnen2lem4 15569 rpnnen2lem9 15574 rpnnen2lem11 15576 3lcm2e6woprm 15958 3lcm2e6 16071 prmo3 16376 5prm 16441 6nprm 16442 7prm 16443 9nprm 16445 11prm 16447 13prm 16448 17prm 16449 19prm 16450 23prm 16451 prmlem2 16452 37prm 16453 43prm 16454 83prm 16455 139prm 16456 163prm 16457 317prm 16458 631prm 16459 1259lem5 16467 2503lem1 16469 2503lem2 16470 2503lem3 16471 4001lem4 16476 4001prm 16477 mulrndx 16614 mulrid 16615 rngstr 16618 ressmulr 16624 unifndx 16676 unifid 16677 lt6abl 19014 sramulr 19951 opsrmulr 20260 cnfldstr 20546 cnfldfun 20556 zlmmulr 20666 znmul 20687 ressunif 22870 tuslem 22875 tngmulr 23252 tangtx 25090 1cubrlem 25418 1cubr 25419 dcubic1lem 25420 dcubic2 25421 dcubic 25423 mcubic 25424 cubic2 25425 cubic 25426 quartlem3 25436 quart 25438 log2cnv 25521 log2tlbnd 25522 log2ublem1 25523 log2ublem2 25524 log2ub 25526 ppiublem1 25777 ppiub 25779 chtub 25787 bposlem3 25861 bposlem4 25862 bposlem5 25863 bposlem6 25864 bposlem9 25867 lgsdir2lem5 25904 dchrvmasumlem2 26073 dchrvmasumlema 26075 pntleml 26186 tgcgr4 26316 axlowdimlem16 26742 axlowdimlem17 26743 usgrexmpldifpr 27039 upgr3v3e3cycl 27958 ex-cnv 28215 ex-rn 28218 ex-mod 28227 resvmulr 30908 fib4 31662 circlevma 31913 circlemethhgt 31914 hgt750lema 31928 sinccvglem 32915 cnndvlem1 33876 mblfinlem3 34930 itg2addnclem2 34943 itg2addnclem3 34944 itg2addnc 34945 hlhilsmul 39076 3cubeslem2 39280 3cubeslem3r 39282 3cubes 39285 rmydioph 39609 rmxdioph 39611 expdiophlem2 39617 expdioph 39618 amgm3d 40550 lhe4.4ex1a 40659 257prm 43722 fmtno4prmfac193 43734 fmtno4nprmfac193 43735 3ndvds4 43757 139prmALT 43758 31prm 43759 127prm 43762 41prothprm 43783 341fppr2 43898 nfermltl2rev 43907 wtgoldbnnsum4prm 43966 bgoldbnnsum3prm 43968 bgoldbtbndlem1 43969 tgoldbach 43981 |
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