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| Mirrors > Home > ILE Home > Th. List > peano2nn0 | GIF version | ||
| Description: Second Peano postulate for nonnegative integers. (Contributed by NM, 9-May-2004.) |
| Ref | Expression |
|---|---|
| peano2nn0 | ⊢ (𝑁 ∈ ℕ0 → (𝑁 + 1) ∈ ℕ0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1nn0 9584 | . 2 ⊢ 1 ∈ ℕ0 | |
| 2 | nn0addcl 9603 | . 2 ⊢ ((𝑁 ∈ ℕ0 ∧ 1 ∈ ℕ0) → (𝑁 + 1) ∈ ℕ0) | |
| 3 | 1, 2 | mpan2 429 | 1 ⊢ (𝑁 ∈ ℕ0 → (𝑁 + 1) ∈ ℕ0) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 (class class class)co 6085 1c1 8181 + caddc 8183 ℕ0cn0 9568 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-sep 4249 ax-cnex 8271 ax-resscn 8272 ax-1cn 8273 ax-1re 8274 ax-icn 8275 ax-addcl 8276 ax-addrcl 8277 ax-mulcl 8278 ax-addcom 8280 ax-addass 8282 ax-i2m1 8285 ax-0id 8288 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-iota 5337 df-fv 5385 df-ov 6088 df-inn 9308 df-n0 9569 |
| This theorem is used by: peano2z 9685 nn0split 10554 fzonn0p1p1 10642 elfzom1p1elfzo 10643 frecfzennn 10878 leexp2r 11045 facdiv 11192 facwordi 11194 faclbnd 11195 faclbnd2 11196 faclbnd3 11197 faclbnd6 11198 bcnp1n 11213 bcp1m1 11219 bcpasc 11220 hashfz 11278 hashf1 11303 ffz0iswrdnn0 11347 pfxccatpfx2 11525 pfxccat3a 11526 bcxmas 12275 geolim 12297 geo2sum 12300 mertenslemub 12320 mertenslemi1 12321 mertenslem2 12322 mertensabs 12323 efcllemp 12444 eftlub 12476 efsep 12477 effsumlt 12478 nn0ob 12694 nn0oddm1d2 12695 bitsp1 12737 nn0seqcvgd 12838 algcvg 12845 pwbdvdseulemle 12965 2sqpwodd 12975 nonsq 13006 pcprendvds 13092 pcpremul 13095 pcdvdsb 13122 4sqlem11 13203 ennnfonelemp1 13349 ennnfonelemkh 13355 ennnfonelemim 13367 gsump1 14241 assamulgscmlem2 15126 elply2 15927 plyaddlem1 15939 plymullem1 15940 plycoeid3 15949 plycolemc 15950 dvply1 15957 dvply2g 15958 perfectlem1 16260 bcp1ctr 16267 2lgslem3d1 16385 clwwlknonex2lem2 16845 eupth2lemsfi 16885 |
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