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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 12412 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4nn 12430 | . . 3 ⊢ 4 ∈ ℕ | |
| 3 | peano2nn 12351 | . . 3 ⊢ (4 ∈ ℕ → (4 + 1) ∈ ℕ) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (4 + 1) ∈ ℕ |
| 5 | 1, 4 | eqeltri 2856 | 1 ⊢ 5 ∈ ℕ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2144 (class class class)co 7421 1c1 11205 + caddc 11207 ℕcn 12339 4c4 12403 5c5 12404 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pr 5390 ax-un 7752 ax-1cn 11262 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-ov 7424 df-om 7879 df-2nd 8003 df-frecs 8303 df-wrecs 8334 df-recs 8383 df-rdg 8422 df-nn 12340 df-2 12409 df-3 12410 df-4 12411 df-5 12412 |
| This theorem is used by: 6nn 12436 5pos 12459 5nn0 12630 5eluz3 13014 5ndvds3 16589 5ndvds6 16590 prm23ge5 16999 dec5dvds 17248 dec5nprm 17250 dec2nprm 17251 5prm 17292 10nprmOLD 17298 23prm 17303 prmlem2 17304 43prm 17306 83prm 17307 317prm 17310 prmo5 17313 scandx 17491 scaid 17492 lmodstr 17502 ipsstr 17513 ccondx 17590 ccoid 17591 slotsbhcdif 17592 slotsdifplendx2 17593 slotsdifocndx 17594 prdsvalstr 17629 catstr 18141 lt6abl 20115 psrvalstr 22230 log2ublem1 27280 log2ublem2 27281 log2ub 27283 birthday 27288 ppiublem1 27535 ppiublem2 27536 ppiub 27537 bclbnd 27613 bposlem3 27619 bposlem4 27620 bposlem5 27621 bposlem6 27622 bposlem8 27624 bposlem9 27625 lgsdir2lem3 27660 ex-eprel 31040 ex-xp 31043 fib6 35085 hgt750lem2 35328 hgt750leme 35334 12gcd5e1 43147 12lcm5e60 43152 lcm5un 43161 lcmineqlem 43196 3lexlogpow5ineq1 43198 3lexlogpow2ineq1 43202 3lexlogpow2ineq2 43203 3lexlogpow5ineq5 43204 aks4d1p1p6 43217 aks4d1p1 43220 5ne0 43419 rmydioph 44115 expdiophlem2 44123 algstr 44269 inductionexd 45249 goldratmolem2 48027 plusmod5ne 48515 minusmod5ne 48519 minusmodnep2tmod 48523 8mod5e3 48530 257prm 48740 fmtno4prmfac193 48752 31prm 48776 41prothprm 48798 gbowge7 48955 gbege6 48957 stgoldbwt 48968 sbgoldbwt 48969 sbgoldbm 48976 sbgoldbo 48979 nnsum3primesle9 48986 gpg5order 49252 gpg5nbgrvtx13starlem1 49263 gpg5nbgrvtx13starlem2 49264 gpg5nbgrvtx13starlem3 49265 gpg5nbgr3star 49273 gpg5grlim 49285 pgnioedg1 49300 pgnioedg2 49301 pgnioedg3 49302 pgnioedg4 49303 pgnbgreunbgrlem1 49305 pgnbgreunbgrlem2lem1 49306 pgnbgreunbgrlem2lem2 49307 pgnbgreunbgrlem2lem3 49308 pgnbgreunbgrlem4 49311 gpg5edgnedg 49322 grlimedgnedg 49323 veronesev5lem 51146 veronesevrowd 51148 veroquadgsumlem 51152 |
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