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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 9159 | . 2 ⊢ 1 ∈ ℕ | |
| 2 | nn0nnaddcl 9438 | . 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 2201 (class class class)co 6023 1c1 8038 + caddc 8040 ℕcn 9148 ℕ0cn0 9407 |
| 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 2212 ax-sep 4208 ax-cnex 8128 ax-resscn 8129 ax-1cn 8130 ax-1re 8131 ax-icn 8132 ax-addcl 8133 ax-addrcl 8134 ax-mulcl 8135 ax-addcom 8137 ax-addass 8139 ax-i2m1 8142 ax-0id 8145 ax-rnegex 8146 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1810 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-ral 2514 df-rex 2515 df-rab 2518 df-v 2803 df-un 3203 df-in 3205 df-ss 3212 df-sn 3676 df-pr 3677 df-op 3679 df-uni 3895 df-int 3930 df-br 4090 df-iota 5288 df-fv 5336 df-ov 6026 df-inn 9149 df-n0 9408 |
| This theorem is referenced by: elnn0nn 9449 elz2 9556 peano5uzti 9593 fseq1p1m1 10334 fzonn0p1 10462 nn0ennn 10701 faccl 11003 facdiv 11006 facwordi 11008 faclbnd 11009 facubnd 11013 bcm1k 11028 bcp1n 11029 bcp1nk 11030 bcpasc 11034 ccats1pfxeqrex 11305 wrdind 11312 wrd2ind 11313 ccats1pfxeqbi 11332 bcxmas 12073 efcllemp 12242 uzwodc 12631 prmfac1 12747 pcfac 12946 4sqlem12 12998 gsumfzconst 13951 plycolemc 15511 gausslemma2dlem3 15821 2lgslem1a 15846 depindlem1 16386 gfsump1 16754 |
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