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| 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 12504 | . 2 ⊢ (𝑀 ∈ ℤ ↔ ∃𝑥 ∈ ℕ ∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦)) | |
| 2 | elz2 12504 | . 2 ⊢ (𝑁 ∈ ℤ ↔ ∃𝑧 ∈ ℕ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤)) | |
| 3 | reeanv 3206 | . . 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 3206 | . . . . 5 ⊢ (∃𝑦 ∈ ℕ ∃𝑤 ∈ ℕ (𝑀 = (𝑥 − 𝑦) ∧ 𝑁 = (𝑧 − 𝑤)) ↔ (∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦) ∧ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤))) | |
| 5 | nnaddcl 12166 | . . . . . . . . . 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 12166 | . . . . . . . . . 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 12151 | . . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℂ) | |
| 10 | nncn 12151 | . . . . . . . . . . . 12 ⊢ (𝑧 ∈ ℕ → 𝑧 ∈ ℂ) | |
| 11 | 9, 10 | anim12i 613 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) → (𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ)) |
| 12 | nncn 12151 | . . . . . . . . . . . 12 ⊢ (𝑦 ∈ ℕ → 𝑦 ∈ ℂ) | |
| 13 | nncn 12151 | . . . . . . . . . . . 12 ⊢ (𝑤 ∈ ℕ → 𝑤 ∈ ℂ) | |
| 14 | 12, 13 | anim12i 613 | . . . . . . . . . . 11 ⊢ ((𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ) → (𝑦 ∈ ℂ ∧ 𝑤 ∈ ℂ)) |
| 15 | addsub4 11422 | . . . . . . . . . . 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 2740 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → ((𝑥 − 𝑦) + (𝑧 − 𝑤)) = ((𝑥 + 𝑧) − (𝑦 + 𝑤))) |
| 18 | rspceov 7405 | . . . . . . . . 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 12504 | . . . . . . . 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 7365 | . . . . . . . 8 ⊢ ((𝑀 = (𝑥 − 𝑦) ∧ 𝑁 = (𝑧 − 𝑤)) → (𝑀 + 𝑁) = ((𝑥 − 𝑦) + (𝑧 − 𝑤))) | |
| 23 | 22 | eleq1d 2819 | . . . . . . 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 3191 | . . . . 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 3176 | . . 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 3058 (class class class)co 7356 ℂcc 11022 + caddc 11027 − cmin 11362 ℕcn 12143 ℤcz 12486 |
| 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 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 ax-resscn 11081 ax-1cn 11082 ax-icn 11083 ax-addcl 11084 ax-addrcl 11085 ax-mulcl 11086 ax-mulrcl 11087 ax-mulcom 11088 ax-addass 11089 ax-mulass 11090 ax-distr 11091 ax-i2m1 11092 ax-1ne0 11093 ax-1rid 11094 ax-rnegex 11095 ax-rrecex 11096 ax-cnre 11097 ax-pre-lttri 11098 ax-pre-lttrn 11099 ax-pre-ltadd 11100 ax-pre-mulgt0 11101 |
| 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 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3059 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-iun 4946 df-br 5097 df-opab 5159 df-mpt 5178 df-tr 5204 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-er 8633 df-en 8882 df-dom 8883 df-sdom 8884 df-pnf 11166 df-mnf 11167 df-xr 11168 df-ltxr 11169 df-le 11170 df-sub 11364 df-neg 11365 df-nn 12144 df-n0 12400 df-z 12487 |
| This theorem is referenced by: peano2z 12530 zsubcl 12531 zrevaddcl 12534 zdivadd 12561 zaddcld 12598 eluzadd 12778 nn0pzuz 12816 fzen 13455 fzaddel 13472 fzadd2 13473 fzrev3 13504 fzrevral3 13528 elfzmlbp 13553 fzoun 13610 fzoaddel 13631 zpnn0elfzo 13652 elfzomelpfzo 13686 fzoshftral 13701 modsumfzodifsn 13865 ccatsymb 14504 ccatval21sw 14507 lswccatn0lsw 14513 swrdccatin2 14650 revccat 14687 2cshw 14734 cshweqrep 14742 2cshwcshw 14746 cshwcsh2id 14749 cshco 14757 climshftlem 15495 isershft 15585 iseraltlem2 15604 fsumzcl 15656 zrisefaccl 15941 summodnegmod 16211 dvds2ln 16214 dvds2add 16215 dvdsadd 16227 dvdsadd2b 16231 addmodlteqALT 16250 3dvdsdec 16257 3dvds2dec 16258 opoe 16288 opeo 16290 divalglem2 16320 ndvdsadd 16335 gcdaddmlem 16449 pythagtriplem9 16750 difsqpwdvds 16813 gzaddcl 16863 mod2xnegi 16997 cshwshashlem2 17022 cycsubgcl 19133 efgredleme 19670 zaddablx 19799 pgpfac1lem2 20004 zsubrg 21373 zringsub 21408 zringmulg 21409 expghm 21428 mulgghm2 21429 pzriprnglem4 21437 cygznlem3 21522 iaa 26287 dchrisumlem1 27454 axlowdimlem16 28979 crctcshwlkn0lem4 29835 crctcshwlkn0 29843 clwwlkccatlem 30013 clwwisshclwwslemlem 30037 elrgspnlem1 33273 ballotlemsima 34622 mzpclall 42911 mzpindd 42930 rmxyadd 43105 jm2.18 43172 inductionexd 44338 dvdsn1add 46125 stoweidlem34 46220 fourierswlem 46416 nthrucw 47072 2elfz2melfz 47506 submodaddmod 47529 submodneaddmod 47539 modmkpkne 47549 opoeALTV 47871 opeoALTV 47872 even3prm2 47907 mogoldbblem 47908 gbowgt5 47950 gboge9 47952 sbgoldbst 47966 2zrngamgm 48433 |
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