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| Mirrors > Home > ILE Home > Th. List > nn0p1nn | GIF version | ||
| Description: A nonnegative integer plus 1 is a positive integer. (Contributed by Raph Levien, 30-Jun-2006.) (Revised by Mario Carneiro, 16-May-2014.) |
| Ref | Expression |
|---|---|
| nn0p1nn | ⊢ (𝑁 ∈ ℕ0 → (𝑁 + 1) ∈ ℕ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1nn 9298 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | nn0nnaddcl 9577 | . 2 ⊢ ((𝑁 ∈ ℕ0 ∧ 1 ∈ ℕ) → (𝑁 + 1) ∈ ℕ) | |
| 3 | 1, 2 | mpan2 429 | 1 ⊢ (𝑁 ∈ ℕ0 → (𝑁 + 1) ∈ ℕ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2209 (class class class)co 6079 1c1 8174 + caddc 8176 ℕcn 9287 ℕ0cn0 9546 |
| 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 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 4247 ax-cnex 8264 ax-resscn 8265 ax-1cn 8266 ax-1re 8267 ax-icn 8268 ax-addcl 8269 ax-addrcl 8270 ax-mulcl 8271 ax-addcom 8273 ax-addass 8275 ax-i2m1 8278 ax-0id 8281 ax-rnegex 8282 |
| This theorem 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 3714 df-pr 3715 df-op 3717 df-uni 3934 df-int 3969 df-br 4129 df-iota 5335 df-fv 5383 df-ov 6082 df-inn 9288 df-n0 9547 |
| This theorem is referenced by: elnn0nn 9588 elz2 9699 peano5uzti 9737 fseq1p1m1 10484 fzonn0p1 10612 nn0ennn 10853 faccl 11156 facdiv 11159 facwordi 11161 faclbnd 11162 facubnd 11166 bcm1k 11181 bcp1n 11182 bcp1nk 11183 bcpasc 11187 hashf1 11270 ccats1pfxeqrex 11470 wrdind 11477 wrd2ind 11478 ccats1pfxeqbi 11497 bcxmas 12239 efcllemp 12408 uzwodc 12797 prmfac1 12913 pcfac 13112 4sqlem12 13164 gzsumconst 14126 gsump1 14140 plycolemc 15842 log2tlbndlog2 16065 log2ublem2 16067 log2ublog2 16069 birthdaylem2 16071 gausslemma2dlem3 16165 2lgslem1a 16190 depindlem1 16730 |
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