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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 12448 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4nn 12466 | . . 3 ⊢ 4 ∈ ℕ | |
| 3 | peano2nn 12387 | . . 3 ⊢ (4 ∈ ℕ → (4 + 1) ∈ ℕ) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (4 + 1) ∈ ℕ |
| 5 | 1, 4 | eqeltri 2860 | 1 ⊢ 5 ∈ ℕ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2147 (class class class)co 7451 1c1 11240 + caddc 11242 ℕcn 12375 4c4 12439 5c5 12440 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pr 5398 ax-un 7783 ax-1cn 11297 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-ov 7454 df-om 7912 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-nn 12376 df-2 12445 df-3 12446 df-4 12447 df-5 12448 |
| This theorem is used by: 6nn 12472 5pos 12495 5nn0 12666 5eluz3 13050 5ndvds3 16627 5ndvds6 16628 prm23ge5 17037 dec5dvds 17286 dec5nprm 17288 dec2nprm 17289 5prm 17330 10nprmOLD 17336 23prm 17341 prmlem2 17342 43prm 17344 83prm 17345 317prm 17348 prmo5 17351 scandx 17531 scaid 17532 lmodstr 17542 ipsstr 17553 ccondx 17630 ccoid 17631 slotsbhcdif 17636 slotsdifplendx2 17637 slotsdifocndx 17638 prdsvalstr 17673 catstr 18185 lt6abl 20160 psrvalstr 22279 log2ublem1 27331 log2ublem2 27332 log2ub 27334 birthday 27339 ppiublem1 27586 ppiublem2 27587 ppiub 27588 bclbnd 27664 bposlem3 27670 bposlem4 27671 bposlem5 27672 bposlem6 27673 bposlem8 27675 bposlem9 27676 lgsdir2lem3 27711 ex-eprel 31091 ex-xp 31094 fib6 35149 hgt750lem2 35392 hgt750leme 35398 12gcd5e1 43319 12lcm5e60 43324 lcm5un 43333 lcmineqlem 43368 3lexlogpow5ineq1 43370 3lexlogpow2ineq1 43374 3lexlogpow2ineq2 43375 3lexlogpow5ineq5 43376 aks4d1p1p6 43389 aks4d1p1 43392 5ne0 43591 rmydioph 44287 expdiophlem2 44295 algstr 44436 inductionexd 45416 goldratmolem2 48206 plusmod5ne 48694 minusmod5ne 48698 minusmodnep2tmod 48702 8mod5e3 48709 257prm 48919 fmtno4prmfac193 48931 31prm 48955 41prothprm 48977 gbowge7 49134 gbege6 49136 stgoldbwt 49147 sbgoldbwt 49148 sbgoldbm 49155 sbgoldbo 49158 nnsum3primesle9 49165 gpg5order 49431 gpg5nbgrvtx13starlem1 49442 gpg5nbgrvtx13starlem2 49443 gpg5nbgrvtx13starlem3 49444 gpg5nbgr3star 49452 gpg5grlim 49464 pgnioedg1 49479 pgnioedg2 49480 pgnioedg3 49481 pgnioedg4 49482 pgnbgreunbgrlem1 49484 pgnbgreunbgrlem2lem1 49485 pgnbgreunbgrlem2lem2 49486 pgnbgreunbgrlem2lem3 49487 pgnbgreunbgrlem4 49490 gpg5edgnedg 49501 grlimedgnedg 49502 veronesev5lem 51405 veronesevrowd 51407 veroquadgsumlem 51411 |
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