| 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 9147 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | nn0nnaddcl 9426 | . 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 2200 (class class class)co 6013 1c1 8026 + caddc 8028 ℕcn 9136 ℕ0cn0 9395 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-sep 4205 ax-cnex 8116 ax-resscn 8117 ax-1cn 8118 ax-1re 8119 ax-icn 8120 ax-addcl 8121 ax-addrcl 8122 ax-mulcl 8123 ax-addcom 8125 ax-addass 8127 ax-i2m1 8130 ax-0id 8133 ax-rnegex 8134 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2802 df-un 3202 df-in 3204 df-ss 3211 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-br 4087 df-iota 5284 df-fv 5332 df-ov 6016 df-inn 9137 df-n0 9396 |
| This theorem is referenced by: elnn0nn 9437 elz2 9544 peano5uzti 9581 fseq1p1m1 10322 fzonn0p1 10449 nn0ennn 10688 faccl 10990 facdiv 10993 facwordi 10995 faclbnd 10996 facubnd 11000 bcm1k 11015 bcp1n 11016 bcp1nk 11017 bcpasc 11021 ccats1pfxeqrex 11289 wrdind 11296 wrd2ind 11297 ccats1pfxeqbi 11316 bcxmas 12043 efcllemp 12212 uzwodc 12601 prmfac1 12717 pcfac 12916 4sqlem12 12968 gsumfzconst 13921 plycolemc 15475 gausslemma2dlem3 15785 2lgslem1a 15810 |
| Copyright terms: Public domain | W3C validator |