| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 9325 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | nn0nnaddcl 9606 | . 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 |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 (class class class)co 6088 1c1 8187 + caddc 8189 ℕcn 9314 ℕ0cn0 9575 |
| 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 4251 ax-cnex 8277 ax-resscn 8278 ax-1cn 8279 ax-1re 8280 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-addcom 8286 ax-addass 8288 ax-i2m1 8291 ax-0id 8294 ax-rnegex 8295 |
| 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 4132 df-iota 5340 df-fv 5388 df-ov 6091 df-inn 9315 df-n0 9576 |
| This theorem is used by: elnn0nn 9617 elz2 9728 peano5uzti 9766 fseq1p1m1 10519 fzonn0p1 10647 nn0ennn 10892 faccl 11196 facdiv 11199 facwordi 11201 faclbnd 11202 facubnd 11206 bcm1k 11221 bcp1n 11222 bcp1nk 11223 bcpasc 11227 hashf1 11310 ccats1pfxeqrex 11510 wrdind 11517 wrd2ind 11518 ccats1pfxeqbi 11537 bcxmas 12282 efcllemp 12451 uzwodc 12840 prmfac1 12957 pcfac 13159 4sqlem12 13211 gzsumconst 14234 gsump1 14248 plycolemc 15996 log2tlbndlog2 16232 log2ublem2 16234 log2ublog2 16236 birthdaylem2 16238 chtublem 16307 bcmono 16316 bcp1ctr 16318 gausslemma2dlem3 16399 2lgslem1a 16424 depindlem1 16964 |
| Copyright terms: Public domain | W3C validator |