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| Mirrors > Home > MPE Home > Th. List > 5nn | Structured version Visualization version GIF version | ||
| Description: 5 is a positive integer. (Contributed by Mario Carneiro, 15-Sep-2013.) |
| Ref | Expression |
|---|---|
| 5nn | ⊢ 5 ∈ ℕ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-5 12223 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4nn 12240 | . . 3 ⊢ 4 ∈ ℕ | |
| 3 | peano2nn 12169 | . . 3 ⊢ (4 ∈ ℕ → (4 + 1) ∈ ℕ) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (4 + 1) ∈ ℕ |
| 5 | 1, 4 | eqeltri 2833 | 1 ⊢ 5 ∈ ℕ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 (class class class)co 7368 1c1 11039 + caddc 11041 ℕcn 12157 4c4 12214 5c5 12215 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pr 5379 ax-un 7690 ax-1cn 11096 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-ov 7371 df-om 7819 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-nn 12158 df-2 12220 df-3 12221 df-4 12222 df-5 12223 |
| This theorem is referenced by: 6nn 12246 5nn0 12433 5eluz3 12808 5ndvds3 16352 5ndvds6 16353 prm23ge5 16755 dec5dvds 17004 dec5nprm 17006 dec2nprm 17007 5prm 17048 10nprm 17053 23prm 17058 prmlem2 17059 43prm 17061 83prm 17062 317prm 17065 prmo5 17068 scandx 17246 scaid 17247 lmodstr 17257 ipsstr 17268 ccondx 17345 ccoid 17346 slotsbhcdif 17347 slotsdifplendx2 17348 slotsdifocndx 17349 prdsvalstr 17384 catstr 17896 lt6abl 19836 psrvalstr 21884 log2ublem1 26924 log2ublem2 26925 log2ub 26927 birthday 26932 ppiublem1 27181 ppiublem2 27182 ppiub 27183 bclbnd 27259 bposlem3 27265 bposlem4 27266 bposlem5 27267 bposlem6 27268 bposlem8 27270 bposlem9 27271 lgsdir2lem3 27306 ex-eprel 30520 ex-xp 30523 fib6 34583 hgt750lem2 34829 hgt750leme 34835 12gcd5e1 42370 12lcm5e60 42375 lcm5un 42384 lcmineqlem 42419 3lexlogpow5ineq1 42421 3lexlogpow2ineq1 42425 3lexlogpow2ineq2 42426 3lexlogpow5ineq5 42427 aks4d1p1p6 42440 aks4d1p1 42443 5ne0 42627 rmydioph 43368 expdiophlem2 43376 algstr 43527 inductionexd 44508 plusmod5ne 47702 minusmod5ne 47706 minusmodnep2tmod 47710 8mod5e3 47717 257prm 47918 fmtno4prmfac193 47930 31prm 47954 41prothprm 47976 gbowge7 48120 gbege6 48122 stgoldbwt 48133 sbgoldbwt 48134 sbgoldbm 48141 sbgoldbo 48144 nnsum3primesle9 48151 gpg5order 48417 gpg5nbgrvtx13starlem1 48428 gpg5nbgrvtx13starlem2 48429 gpg5nbgrvtx13starlem3 48430 gpg5nbgr3star 48438 gpg5grlim 48450 pgnioedg1 48465 pgnioedg2 48466 pgnioedg3 48467 pgnioedg4 48468 pgnbgreunbgrlem1 48470 pgnbgreunbgrlem2lem1 48471 pgnbgreunbgrlem2lem2 48472 pgnbgreunbgrlem2lem3 48473 pgnbgreunbgrlem4 48476 gpg5edgnedg 48487 grlimedgnedg 48488 |
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