| 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 9154 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | nn0nnaddcl 9433 | . 2 ⊢ ((𝑁 ∈ ℕ0 ∧ 1 ∈ ℕ) → (𝑁 + 1) ∈ ℕ) | |
| 3 | 1, 2 | mpan2 425 | 1 ⊢ (𝑁 ∈ ℕ0 → (𝑁 + 1) ∈ ℕ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 (class class class)co 6018 1c1 8033 + caddc 8035 ℕcn 9143 ℕ0cn0 9402 |
| 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 8123 ax-resscn 8124 ax-1cn 8125 ax-1re 8126 ax-icn 8127 ax-addcl 8128 ax-addrcl 8129 ax-mulcl 8130 ax-addcom 8132 ax-addass 8134 ax-i2m1 8137 ax-0id 8140 ax-rnegex 8141 |
| 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 6021 df-inn 9144 df-n0 9403 |
| This theorem is referenced by: elnn0nn 9444 elz2 9551 peano5uzti 9588 fseq1p1m1 10329 fzonn0p1 10457 nn0ennn 10696 faccl 10998 facdiv 11001 facwordi 11003 faclbnd 11004 facubnd 11008 bcm1k 11023 bcp1n 11024 bcp1nk 11025 bcpasc 11029 ccats1pfxeqrex 11297 wrdind 11304 wrd2ind 11305 ccats1pfxeqbi 11324 bcxmas 12052 efcllemp 12221 uzwodc 12610 prmfac1 12726 pcfac 12925 4sqlem12 12977 gsumfzconst 13930 plycolemc 15485 gausslemma2dlem3 15795 2lgslem1a 15820 depindlem1 16346 gfsump1 16707 |
| Copyright terms: Public domain | W3C validator |