| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > zaddcl | Structured version Visualization version GIF version | ||
| Description: Closure of addition of integers. (Contributed by NM, 9-May-2004.) (Proof shortened by Mario Carneiro, 16-May-2014.) |
| Ref | Expression |
|---|---|
| zaddcl | ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 + 𝑁) ∈ ℤ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elz2 12506 | . 2 ⊢ (𝑀 ∈ ℤ ↔ ∃𝑥 ∈ ℕ ∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦)) | |
| 2 | elz2 12506 | . 2 ⊢ (𝑁 ∈ ℤ ↔ ∃𝑧 ∈ ℕ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤)) | |
| 3 | reeanv 3208 | . . 3 ⊢ (∃𝑥 ∈ ℕ ∃𝑧 ∈ ℕ (∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦) ∧ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤)) ↔ (∃𝑥 ∈ ℕ ∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦) ∧ ∃𝑧 ∈ ℕ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤))) | |
| 4 | reeanv 3208 | . . . . 5 ⊢ (∃𝑦 ∈ ℕ ∃𝑤 ∈ ℕ (𝑀 = (𝑥 − 𝑦) ∧ 𝑁 = (𝑧 − 𝑤)) ↔ (∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦) ∧ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤))) | |
| 5 | nnaddcl 12168 | . . . . . . . . . 10 ⊢ ((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) → (𝑥 + 𝑧) ∈ ℕ) | |
| 6 | 5 | adantr 480 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → (𝑥 + 𝑧) ∈ ℕ) |
| 7 | nnaddcl 12168 | . . . . . . . . . 10 ⊢ ((𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ) → (𝑦 + 𝑤) ∈ ℕ) | |
| 8 | 7 | adantl 481 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → (𝑦 + 𝑤) ∈ ℕ) |
| 9 | nncn 12153 | . . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℂ) | |
| 10 | nncn 12153 | . . . . . . . . . . . 12 ⊢ (𝑧 ∈ ℕ → 𝑧 ∈ ℂ) | |
| 11 | 9, 10 | anim12i 613 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) → (𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ)) |
| 12 | nncn 12153 | . . . . . . . . . . . 12 ⊢ (𝑦 ∈ ℕ → 𝑦 ∈ ℂ) | |
| 13 | nncn 12153 | . . . . . . . . . . . 12 ⊢ (𝑤 ∈ ℕ → 𝑤 ∈ ℂ) | |
| 14 | 12, 13 | anim12i 613 | . . . . . . . . . . 11 ⊢ ((𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ) → (𝑦 ∈ ℂ ∧ 𝑤 ∈ ℂ)) |
| 15 | addsub4 11424 | . . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ) ∧ (𝑦 ∈ ℂ ∧ 𝑤 ∈ ℂ)) → ((𝑥 + 𝑧) − (𝑦 + 𝑤)) = ((𝑥 − 𝑦) + (𝑧 − 𝑤))) | |
| 16 | 11, 14, 15 | syl2an 596 | . . . . . . . . . 10 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → ((𝑥 + 𝑧) − (𝑦 + 𝑤)) = ((𝑥 − 𝑦) + (𝑧 − 𝑤))) |
| 17 | 16 | eqcomd 2742 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → ((𝑥 − 𝑦) + (𝑧 − 𝑤)) = ((𝑥 + 𝑧) − (𝑦 + 𝑤))) |
| 18 | rspceov 7407 | . . . . . . . . 9 ⊢ (((𝑥 + 𝑧) ∈ ℕ ∧ (𝑦 + 𝑤) ∈ ℕ ∧ ((𝑥 − 𝑦) + (𝑧 − 𝑤)) = ((𝑥 + 𝑧) − (𝑦 + 𝑤))) → ∃𝑢 ∈ ℕ ∃𝑣 ∈ ℕ ((𝑥 − 𝑦) + (𝑧 − 𝑤)) = (𝑢 − 𝑣)) | |
| 19 | 6, 8, 17, 18 | syl3anc 1373 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → ∃𝑢 ∈ ℕ ∃𝑣 ∈ ℕ ((𝑥 − 𝑦) + (𝑧 − 𝑤)) = (𝑢 − 𝑣)) |
| 20 | elz2 12506 | . . . . . . . 8 ⊢ (((𝑥 − 𝑦) + (𝑧 − 𝑤)) ∈ ℤ ↔ ∃𝑢 ∈ ℕ ∃𝑣 ∈ ℕ ((𝑥 − 𝑦) + (𝑧 − 𝑤)) = (𝑢 − 𝑣)) | |
| 21 | 19, 20 | sylibr 234 | . . . . . . 7 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → ((𝑥 − 𝑦) + (𝑧 − 𝑤)) ∈ ℤ) |
| 22 | oveq12 7367 | . . . . . . . 8 ⊢ ((𝑀 = (𝑥 − 𝑦) ∧ 𝑁 = (𝑧 − 𝑤)) → (𝑀 + 𝑁) = ((𝑥 − 𝑦) + (𝑧 − 𝑤))) | |
| 23 | 22 | eleq1d 2821 | . . . . . . 7 ⊢ ((𝑀 = (𝑥 − 𝑦) ∧ 𝑁 = (𝑧 − 𝑤)) → ((𝑀 + 𝑁) ∈ ℤ ↔ ((𝑥 − 𝑦) + (𝑧 − 𝑤)) ∈ ℤ)) |
| 24 | 21, 23 | syl5ibrcom 247 | . . . . . 6 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → ((𝑀 = (𝑥 − 𝑦) ∧ 𝑁 = (𝑧 − 𝑤)) → (𝑀 + 𝑁) ∈ ℤ)) |
| 25 | 24 | rexlimdvva 3193 | . . . . 5 ⊢ ((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) → (∃𝑦 ∈ ℕ ∃𝑤 ∈ ℕ (𝑀 = (𝑥 − 𝑦) ∧ 𝑁 = (𝑧 − 𝑤)) → (𝑀 + 𝑁) ∈ ℤ)) |
| 26 | 4, 25 | biimtrrid 243 | . . . 4 ⊢ ((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) → ((∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦) ∧ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤)) → (𝑀 + 𝑁) ∈ ℤ)) |
| 27 | 26 | rexlimivv 3178 | . . 3 ⊢ (∃𝑥 ∈ ℕ ∃𝑧 ∈ ℕ (∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦) ∧ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤)) → (𝑀 + 𝑁) ∈ ℤ) |
| 28 | 3, 27 | sylbir 235 | . 2 ⊢ ((∃𝑥 ∈ ℕ ∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦) ∧ ∃𝑧 ∈ ℕ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤)) → (𝑀 + 𝑁) ∈ ℤ) |
| 29 | 1, 2, 28 | syl2anb 598 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 + 𝑁) ∈ ℤ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∃wrex 3060 (class class class)co 7358 ℂcc 11024 + caddc 11029 − cmin 11364 ℕcn 12145 ℤcz 12488 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-resscn 11083 ax-1cn 11084 ax-icn 11085 ax-addcl 11086 ax-addrcl 11087 ax-mulcl 11088 ax-mulrcl 11089 ax-mulcom 11090 ax-addass 11091 ax-mulass 11092 ax-distr 11093 ax-i2m1 11094 ax-1ne0 11095 ax-1rid 11096 ax-rnegex 11097 ax-rrecex 11098 ax-cnre 11099 ax-pre-lttri 11100 ax-pre-lttrn 11101 ax-pre-ltadd 11102 ax-pre-mulgt0 11103 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-er 8635 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11168 df-mnf 11169 df-xr 11170 df-ltxr 11171 df-le 11172 df-sub 11366 df-neg 11367 df-nn 12146 df-n0 12402 df-z 12489 |
| This theorem is referenced by: peano2z 12532 zsubcl 12533 zrevaddcl 12536 zdivadd 12563 zaddcld 12600 eluzadd 12780 nn0pzuz 12818 fzen 13457 fzaddel 13474 fzadd2 13475 fzrev3 13506 fzrevral3 13530 elfzmlbp 13555 fzoun 13612 fzoaddel 13633 zpnn0elfzo 13654 elfzomelpfzo 13688 fzoshftral 13703 modsumfzodifsn 13867 ccatsymb 14506 ccatval21sw 14509 lswccatn0lsw 14515 swrdccatin2 14652 revccat 14689 2cshw 14736 cshweqrep 14744 2cshwcshw 14748 cshwcsh2id 14751 cshco 14759 climshftlem 15497 isershft 15587 iseraltlem2 15606 fsumzcl 15658 zrisefaccl 15943 summodnegmod 16213 dvds2ln 16216 dvds2add 16217 dvdsadd 16229 dvdsadd2b 16233 addmodlteqALT 16252 3dvdsdec 16259 3dvds2dec 16260 opoe 16290 opeo 16292 divalglem2 16322 ndvdsadd 16337 gcdaddmlem 16451 pythagtriplem9 16752 difsqpwdvds 16815 gzaddcl 16865 mod2xnegi 16999 cshwshashlem2 17024 cycsubgcl 19135 efgredleme 19672 zaddablx 19801 pgpfac1lem2 20006 zsubrg 21375 zringsub 21410 zringmulg 21411 expghm 21430 mulgghm2 21431 pzriprnglem4 21439 cygznlem3 21524 iaa 26289 dchrisumlem1 27456 axlowdimlem16 29030 crctcshwlkn0lem4 29886 crctcshwlkn0 29894 clwwlkccatlem 30064 clwwisshclwwslemlem 30088 elrgspnlem1 33324 ballotlemsima 34673 mzpclall 42969 mzpindd 42988 rmxyadd 43163 jm2.18 43230 inductionexd 44396 dvdsn1add 46183 stoweidlem34 46278 fourierswlem 46474 nthrucw 47130 2elfz2melfz 47564 submodaddmod 47587 submodneaddmod 47597 modmkpkne 47607 opoeALTV 47929 opeoALTV 47930 even3prm2 47965 mogoldbblem 47966 gbowgt5 48008 gboge9 48010 sbgoldbst 48024 2zrngamgm 48491 |
| Copyright terms: Public domain | W3C validator |