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| Mirrors > Home > MPE Home > Th. List > 6nn | Structured version Visualization version GIF version | ||
| Description: 6 is a positive integer. (Contributed by Mario Carneiro, 15-Sep-2013.) |
| Ref | Expression |
|---|---|
| 6nn | ⊢ 6 ∈ ℕ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-6 12318 | . 2 ⊢ 6 = (5 + 1) | |
| 2 | 5nn 12338 | . . 3 ⊢ 5 ∈ ℕ | |
| 3 | peano2nn 12256 | . . 3 ⊢ (5 ∈ ℕ → (5 + 1) ∈ ℕ) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (5 + 1) ∈ ℕ |
| 5 | 1, 4 | eqeltri 2861 | 1 ⊢ 6 ∈ ℕ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2146 (class class class)co 7416 1c1 11112 + caddc 11114 ℕcn 12244 5c5 12309 6c6 12310 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pr 5406 ax-un 7738 ax-1cn 11169 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-ov 7419 df-om 7865 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-nn 12245 df-2 12314 df-3 12315 df-4 12316 df-5 12317 df-6 12318 |
| This theorem is used by: 7nn 12344 6pos 12365 6nn0 12536 ef01bndlem 16257 sin01bnd 16258 cos01bnd 16259 6gcd4e2 16613 6lcm4e12 16691 83prm 17200 139prm 17201 163prm 17202 prmo6 17207 vscandx 17389 vscaid 17390 lmodstr 17395 ipsstr 17406 lt6abl 19988 psrvalstr 22095 sincos3rdpi 26711 1cubrlem 27035 quart1cl 27048 quart1lem 27049 quart1 27050 log2ub 27143 log2le1 27144 basellem5 27278 basellem8 27281 basellem9 27282 ppiublem1 27395 ppiublem2 27396 ppiub 27397 bpos1 27476 bposlem9 27485 itvndx 28735 itvid 28737 slotsinbpsd 28739 lngndxnitvndx 28741 trkgstr 28742 eengstr 29359 ex-cnv 30817 ex-dm 30819 ex-dvds 30836 ex-gcd 30837 ex-lcm 30838 hgt750lem 35062 60gcd6e6 42804 60gcd7e1 42805 12lcm5e60 42808 60lcm6e60 42809 60lcm7e420 42810 lcm6un 42818 lcmineqlem 42852 3lexlogpow5ineq1 42854 aks4d1p1p5 42875 aks4d1p1 42876 6ne0 43061 rmydioph 43774 expdiophlem2 43782 algstr 43933 goldratmolem2 47656 139prmALT 48381 31prm 48382 127prm 48384 nprmdvdsfacm1lem4 48408 nprmdvdsfacm1 48409 ppivalnnnprmge6 48411 6even 48509 gbowge7 48561 stgoldbwt 48574 sbgoldbwt 48575 mogoldbb 48583 sbgoldbo 48585 nnsum3primesle9 48592 nnsum4primeseven 48598 wtgoldbnnsum4prm 48600 bgoldbnnsum3prm 48602 zlmodzxzequa 49309 zlmodzxznm 49310 zlmodzxzequap 49312 zlmodzxzldeplem3 49315 zlmodzxzldep 49317 ldepsnlinclem2 49319 ldepsnlinc 49321 |
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