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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 12401 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4nn 12419 | . . 3 ⊢ 4 ∈ ℕ | |
| 3 | peano2nn 12340 | . . 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 |
| This proof depends on syntax axioms: ∈ wcel 2145 (class class class)co 7418 1c1 11194 + caddc 11196 ℕcn 12328 4c4 12392 5c5 12393 |
| 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 2733 ax-sep 5249 ax-nul 5260 ax-pr 5391 ax-un 7749 ax-1cn 11251 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 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 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7421 df-om 7876 df-2nd 8000 df-frecs 8292 df-wrecs 8323 df-recs 8372 df-rdg 8411 df-nn 12329 df-2 12398 df-3 12399 df-4 12400 df-5 12401 |
| This theorem is used by: 6nn 12425 5pos 12448 5nn0 12619 5eluz3 13003 5ndvds3 16576 5ndvds6 16577 prm23ge5 16986 dec5dvds 17235 dec5nprm 17237 dec2nprm 17238 5prm 17279 10nprmOLD 17285 23prm 17290 prmlem2 17291 43prm 17293 83prm 17294 317prm 17297 prmo5 17300 scandx 17478 scaid 17479 lmodstr 17489 ipsstr 17500 ccondx 17577 ccoid 17578 slotsbhcdif 17579 slotsdifplendx2 17580 slotsdifocndx 17581 prdsvalstr 17616 catstr 18128 lt6abl 20102 psrvalstr 22217 log2ublem1 27267 log2ublem2 27268 log2ub 27270 birthday 27275 ppiublem1 27522 ppiublem2 27523 ppiub 27524 bclbnd 27600 bposlem3 27606 bposlem4 27607 bposlem5 27608 bposlem6 27609 bposlem8 27611 bposlem9 27612 lgsdir2lem3 27647 ex-eprel 31027 ex-xp 31030 fib6 35031 hgt750lem2 35274 hgt750leme 35280 12gcd5e1 43033 12lcm5e60 43038 lcm5un 43047 lcmineqlem 43082 3lexlogpow5ineq1 43084 3lexlogpow2ineq1 43088 3lexlogpow2ineq2 43089 3lexlogpow5ineq5 43090 aks4d1p1p6 43103 aks4d1p1 43106 5ne0 43305 rmydioph 44000 expdiophlem2 44008 algstr 44159 inductionexd 45140 goldratmolem2 47902 plusmod5ne 48390 minusmod5ne 48394 minusmodnep2tmod 48398 8mod5e3 48405 257prm 48615 fmtno4prmfac193 48627 31prm 48651 41prothprm 48673 gbowge7 48830 gbege6 48832 stgoldbwt 48843 sbgoldbwt 48844 sbgoldbm 48851 sbgoldbo 48854 nnsum3primesle9 48861 gpg5order 49127 gpg5nbgrvtx13starlem1 49138 gpg5nbgrvtx13starlem2 49139 gpg5nbgrvtx13starlem3 49140 gpg5nbgr3star 49148 gpg5grlim 49160 pgnioedg1 49175 pgnioedg2 49176 pgnioedg3 49177 pgnioedg4 49178 pgnbgreunbgrlem1 49180 pgnbgreunbgrlem2lem1 49181 pgnbgreunbgrlem2lem2 49182 pgnbgreunbgrlem2lem3 49183 pgnbgreunbgrlem4 49186 gpg5edgnedg 49197 grlimedgnedg 49198 veronesev5lem 50946 veronesevrowd 50948 veroquadgsumlem 50952 |
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