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| Mirrors > Home > MPE Home > Th. List > nn0addcl | Structured version Visualization version GIF version | ||
| Description: Closure of addition of nonnegative integers. (Contributed by Raph Levien, 10-Dec-2002.) (Proof shortened by Mario Carneiro, 17-Jul-2014.) |
| Ref | Expression |
|---|---|
| nn0addcl | ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → (𝑀 + 𝑁) ∈ ℕ0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnsscn 12340 | . 2 ⊢ ℕ ⊆ ℂ | |
| 2 | id 23 | . . 3 ⊢ (ℕ ⊆ ℂ → ℕ ⊆ ℂ) | |
| 3 | df-n0 12607 | . . 3 ⊢ ℕ0 = (ℕ ∪ {0}) | |
| 4 | nnaddcl 12358 | . . . 4 ⊢ ((𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (𝑀 + 𝑁) ∈ ℕ) | |
| 5 | 4 | adantl 487 | . . 3 ⊢ ((ℕ ⊆ ℂ ∧ (𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ)) → (𝑀 + 𝑁) ∈ ℕ) |
| 6 | 2, 3, 5 | un0addcl 12639 | . 2 ⊢ ((ℕ ⊆ ℂ ∧ (𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0)) → (𝑀 + 𝑁) ∈ ℕ0) |
| 7 | 1, 6 | mpan 703 | 1 ⊢ ((𝑀 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → (𝑀 + 𝑁) ∈ ℕ0) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2144 ⊆ wss 3913 (class class class)co 7420 ℂcc 11198 + caddc 11203 ℕcn 12335 ℕ0cn0 12606 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-dif 3899 df-un 3901 df-in 3903 df-ss 3914 df-pss 4034 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-om 7878 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-pnf 11345 df-mnf 11346 df-ltxr 11348 df-nn 12336 df-n0 12607 |
| This theorem is used by: nn0addcli 12643 peano2nn0 12646 nn0addcld 12671 nn0readdcl 12673 xnn0xaddcl 13365 difelfznle 13776 elfzodifsumelfzo 13866 modsumfzodifsn 14087 expadd 14247 faclbnd4lem3 14439 faclbnd5 14442 faclbnd6 14443 facavg 14445 ccatlen 14720 ccatrn 14735 ccatalpha 14740 swrdccat2 14819 swrdswrdlem 14853 swrdswrd 14854 swrdccatin1 14874 pfxccatin12lem3 14881 splfv2a 14905 repswswrd 14935 repswccat 14937 cshwcsh2id 14979 fsumnn0cl 15902 bcxmas 16004 nn0risefaccl 16189 eftlub 16277 4sqlem1 17126 psgnunilem2 19709 sylow1lem1 19812 nn0subm 21728 expmhm 21742 psrbagaddcl 22232 dvnadd 26249 ply1divex 26455 coemullem 26569 coemulhi 26573 plymul0or 26599 chtublem 27538 2sqlem7 27751 crctcshwlkn0lem4 30402 clwwlkccatlem 30580 mhphflem 43625 fmtnofac2lem 48653 nn0mnd 49276 ply1mulgsumlem1 49498 |
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