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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 12330 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4nn 12348 | . . 3 ⊢ 4 ∈ ℕ | |
| 3 | peano2nn 12269 | . . 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 2145 (class class class)co 7413 1c1 11125 + caddc 11127 ℕcn 12257 4c4 12321 5c5 12322 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pr 5398 ax-un 7736 ax-1cn 11182 |
| 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 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 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-ov 7416 df-om 7863 df-2nd 7987 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-nn 12258 df-2 12327 df-3 12328 df-4 12329 df-5 12330 |
| This theorem is used by: 6nn 12354 5pos 12377 5nn0 12548 5eluz3 12932 5ndvds3 16503 5ndvds6 16504 prm23ge5 16907 dec5dvds 17156 dec5nprm 17158 dec2nprm 17159 5prm 17200 10nprmOLD 17206 23prm 17211 prmlem2 17212 43prm 17214 83prm 17215 317prm 17218 prmo5 17221 scandx 17399 scaid 17400 lmodstr 17410 ipsstr 17421 ccondx 17498 ccoid 17499 slotsbhcdif 17500 slotsdifplendx2 17501 slotsdifocndx 17502 prdsvalstr 17537 catstr 18049 lt6abl 20022 psrvalstr 22131 log2ublem1 27183 log2ublem2 27184 log2ub 27186 birthday 27191 ppiublem1 27438 ppiublem2 27439 ppiub 27440 bclbnd 27516 bposlem3 27522 bposlem4 27523 bposlem5 27524 bposlem6 27525 bposlem8 27527 bposlem9 27528 lgsdir2lem3 27563 ex-eprel 30913 ex-xp 30916 fib6 34917 hgt750lem2 35160 hgt750leme 35166 12gcd5e1 42869 12lcm5e60 42874 lcm5un 42883 lcmineqlem 42918 3lexlogpow5ineq1 42920 3lexlogpow2ineq1 42924 3lexlogpow2ineq2 42925 3lexlogpow5ineq5 42926 aks4d1p1p6 42939 aks4d1p1 42942 5ne0 43141 rmydioph 43855 expdiophlem2 43863 algstr 44014 inductionexd 44995 goldratmolem2 47751 plusmod5ne 48239 minusmod5ne 48243 minusmodnep2tmod 48247 8mod5e3 48254 257prm 48464 fmtno4prmfac193 48476 31prm 48500 41prothprm 48522 gbowge7 48679 gbege6 48681 stgoldbwt 48692 sbgoldbwt 48693 sbgoldbm 48700 sbgoldbo 48703 nnsum3primesle9 48710 gpg5order 48976 gpg5nbgrvtx13starlem1 48987 gpg5nbgrvtx13starlem2 48988 gpg5nbgrvtx13starlem3 48989 gpg5nbgr3star 48997 gpg5grlim 49009 pgnioedg1 49024 pgnioedg2 49025 pgnioedg3 49026 pgnioedg4 49027 pgnbgreunbgrlem1 49029 pgnbgreunbgrlem2lem1 49030 pgnbgreunbgrlem2lem2 49031 pgnbgreunbgrlem2lem3 49032 pgnbgreunbgrlem4 49035 gpg5edgnedg 49046 grlimedgnedg 49047 veronesev5lem 50810 veronesevrowd 50812 veroquadgsumlem 50816 |
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