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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 12302 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4nn 12320 | . . 3 ⊢ 4 ∈ ℕ | |
| 3 | peano2nn 12241 | . . 3 ⊢ (4 ∈ ℕ → (4 + 1) ∈ ℕ) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (4 + 1) ∈ ℕ |
| 5 | 1, 4 | eqeltri 2865 | 1 ⊢ 5 ∈ ℕ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2149 (class class class)co 7408 1c1 11097 + caddc 11099 ℕcn 12229 4c4 12293 5c5 12294 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5258 ax-nul 5268 ax-pr 5402 ax-un 7730 ax-1cn 11154 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 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 7411 df-om 7859 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-nn 12230 df-2 12299 df-3 12300 df-4 12301 df-5 12302 |
| This theorem is referenced by: 6nn 12326 5pos 12349 5nn0 12520 5eluz3 12903 5ndvds3 16467 5ndvds6 16468 prm23ge5 16871 dec5dvds 17120 dec5nprm 17122 dec2nprm 17123 5prm 17164 10nprmOLD 17170 23prm 17175 prmlem2 17176 43prm 17178 83prm 17179 317prm 17182 prmo5 17185 scandx 17363 scaid 17364 lmodstr 17374 ipsstr 17385 ccondx 17462 ccoid 17463 slotsbhcdif 17464 slotsdifplendx2 17465 slotsdifocndx 17466 prdsvalstr 17501 catstr 18013 lt6abl 19961 psrvalstr 22031 log2ublem1 27073 log2ublem2 27074 log2ub 27076 birthday 27081 ppiublem1 27328 ppiublem2 27329 ppiub 27330 bclbnd 27406 bposlem3 27412 bposlem4 27413 bposlem5 27414 bposlem6 27415 bposlem8 27417 bposlem9 27418 lgsdir2lem3 27453 ex-eprel 30721 ex-xp 30724 fib6 34737 hgt750lem2 34980 hgt750leme 34986 12gcd5e1 42655 12lcm5e60 42660 lcm5un 42669 lcmineqlem 42704 3lexlogpow5ineq1 42706 3lexlogpow2ineq1 42710 3lexlogpow2ineq2 42711 3lexlogpow5ineq5 42712 aks4d1p1p6 42725 aks4d1p1 42728 5ne0 42910 rmydioph 43626 expdiophlem2 43634 algstr 43785 inductionexd 44766 goldratmolem2 47505 plusmod5ne 47970 minusmod5ne 47974 minusmodnep2tmod 47978 8mod5e3 47985 257prm 48195 fmtno4prmfac193 48207 31prm 48231 41prothprm 48253 gbowge7 48410 gbege6 48412 stgoldbwt 48423 sbgoldbwt 48424 sbgoldbm 48431 sbgoldbo 48434 nnsum3primesle9 48441 gpg5order 48707 gpg5nbgrvtx13starlem1 48718 gpg5nbgrvtx13starlem2 48719 gpg5nbgrvtx13starlem3 48720 gpg5nbgr3star 48728 gpg5grlim 48740 pgnioedg1 48755 pgnioedg2 48756 pgnioedg3 48757 pgnioedg4 48758 pgnbgreunbgrlem1 48760 pgnbgreunbgrlem2lem1 48761 pgnbgreunbgrlem2lem2 48762 pgnbgreunbgrlem2lem3 48763 pgnbgreunbgrlem4 48766 gpg5edgnedg 48777 grlimedgnedg 48778 |
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