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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 9417 | . 2 ⊢ 1 ∈ ℕ0 | |
| 2 | nn0addcl 9436 | . 2 ⊢ ((𝑁 ∈ ℕ0 ∧ 1 ∈ ℕ0) → (𝑁 + 1) ∈ ℕ0) | |
| 3 | 1, 2 | mpan2 425 | 1 ⊢ (𝑁 ∈ ℕ0 → (𝑁 + 1) ∈ ℕ0) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 (class class class)co 6017 1c1 8032 + caddc 8034 ℕ0cn0 9401 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-sep 4207 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-addcom 8131 ax-addass 8133 ax-i2m1 8136 ax-0id 8139 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-iota 5286 df-fv 5334 df-ov 6020 df-inn 9143 df-n0 9402 |
| This theorem is referenced by: peano2z 9514 nn0split 10370 fzonn0p1p1 10457 elfzom1p1elfzo 10458 frecfzennn 10687 leexp2r 10854 facdiv 10999 facwordi 11001 faclbnd 11002 faclbnd2 11003 faclbnd3 11004 faclbnd6 11005 bcnp1n 11020 bcp1m1 11026 bcpasc 11027 hashfz 11084 ffz0iswrdnn0 11139 pfxccatpfx2 11317 pfxccat3a 11318 bcxmas 12049 geolim 12071 geo2sum 12074 mertenslemub 12094 mertenslemi1 12095 mertenslem2 12096 mertensabs 12097 efcllemp 12218 eftlub 12250 efsep 12251 effsumlt 12252 nn0ob 12468 nn0oddm1d2 12469 bitsp1 12511 nn0seqcvgd 12612 algcvg 12619 pw2dvdseulemle 12738 2sqpwodd 12747 nonsq 12778 pcprendvds 12862 pcpremul 12865 pcdvdsb 12892 4sqlem11 12973 ennnfonelemp1 13026 ennnfonelemkh 13032 ennnfonelemim 13044 elply2 15458 plyaddlem1 15470 plymullem1 15471 plycoeid3 15480 plycolemc 15481 dvply1 15488 dvply2g 15489 perfectlem1 15722 2lgslem3d1 15828 clwwlknonex2lem2 16288 |
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