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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 12277 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4nn 12295 | . . 3 ⊢ 4 ∈ ℕ | |
| 3 | peano2nn 12216 | . . 3 ⊢ (4 ∈ ℕ → (4 + 1) ∈ ℕ) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (4 + 1) ∈ ℕ |
| 5 | 1, 4 | eqeltri 2857 | 1 ⊢ 5 ∈ ℕ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2141 (class class class)co 7391 1c1 11068 + caddc 11070 ℕcn 12204 4c4 12268 5c5 12269 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-nul 5253 ax-pr 5387 ax-un 7713 ax-1cn 11125 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3076 df-rex 3086 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-iun 4948 df-br 5098 df-opab 5160 df-mpt 5179 df-tr 5205 df-id 5538 df-eprel 5543 df-po 5551 df-so 5552 df-fr 5596 df-we 5598 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-pred 6283 df-ord 6344 df-on 6345 df-lim 6346 df-suc 6347 df-iota 6472 df-fun 6518 df-fn 6519 df-f 6520 df-f1 6521 df-fo 6522 df-f1o 6523 df-fv 6524 df-ov 7394 df-om 7842 df-2nd 7966 df-frecs 8256 df-wrecs 8287 df-recs 8336 df-rdg 8375 df-nn 12205 df-2 12274 df-3 12275 df-4 12276 df-5 12277 |
| This theorem is referenced by: 6nn 12301 5pos 12324 5nn0 12495 5eluz3 12878 5ndvds3 16438 5ndvds6 16439 prm23ge5 16842 dec5dvds 17091 dec5nprm 17093 dec2nprm 17094 5prm 17135 10nprmOLD 17141 23prm 17146 prmlem2 17147 43prm 17149 83prm 17150 317prm 17153 prmo5 17156 scandx 17334 scaid 17335 lmodstr 17345 ipsstr 17356 ccondx 17433 ccoid 17434 slotsbhcdif 17435 slotsdifplendx2 17436 slotsdifocndx 17437 prdsvalstr 17472 catstr 17984 lt6abl 19926 psrvalstr 21956 log2ublem1 26999 log2ublem2 27000 log2ub 27002 birthday 27007 ppiublem1 27254 ppiublem2 27255 ppiub 27256 bclbnd 27332 bposlem3 27338 bposlem4 27339 bposlem5 27340 bposlem6 27341 bposlem8 27343 bposlem9 27344 lgsdir2lem3 27379 ex-eprel 30592 ex-xp 30595 fib6 34664 hgt750lem2 34907 hgt750leme 34913 12gcd5e1 42581 12lcm5e60 42586 lcm5un 42595 lcmineqlem 42630 3lexlogpow5ineq1 42632 3lexlogpow2ineq1 42636 3lexlogpow2ineq2 42637 3lexlogpow5ineq5 42638 aks4d1p1p6 42651 aks4d1p1 42654 5ne0 42836 rmydioph 43552 expdiophlem2 43560 algstr 43711 inductionexd 44692 goldratmolem2 47441 plusmod5ne 47906 minusmod5ne 47910 minusmodnep2tmod 47914 8mod5e3 47921 257prm 48131 fmtno4prmfac193 48143 31prm 48167 41prothprm 48189 gbowge7 48346 gbege6 48348 stgoldbwt 48359 sbgoldbwt 48360 sbgoldbm 48367 sbgoldbo 48370 nnsum3primesle9 48377 gpg5order 48643 gpg5nbgrvtx13starlem1 48654 gpg5nbgrvtx13starlem2 48655 gpg5nbgrvtx13starlem3 48656 gpg5nbgr3star 48664 gpg5grlim 48676 pgnioedg1 48691 pgnioedg2 48692 pgnioedg3 48693 pgnioedg4 48694 pgnbgreunbgrlem1 48696 pgnbgreunbgrlem2lem1 48697 pgnbgreunbgrlem2lem2 48698 pgnbgreunbgrlem2lem3 48699 pgnbgreunbgrlem4 48702 gpg5edgnedg 48713 grlimedgnedg 48714 |
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