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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 12518 | . 2 ⊢ (𝑀 ∈ ℤ ↔ ∃𝑥 ∈ ℕ ∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦)) | |
| 2 | elz2 12518 | . 2 ⊢ (𝑁 ∈ ℤ ↔ ∃𝑧 ∈ ℕ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤)) | |
| 3 | reeanv 3210 | . . 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 3210 | . . . . 5 ⊢ (∃𝑦 ∈ ℕ ∃𝑤 ∈ ℕ (𝑀 = (𝑥 − 𝑦) ∧ 𝑁 = (𝑧 − 𝑤)) ↔ (∃𝑦 ∈ ℕ 𝑀 = (𝑥 − 𝑦) ∧ ∃𝑤 ∈ ℕ 𝑁 = (𝑧 − 𝑤))) | |
| 5 | nnaddcl 12180 | . . . . . . . . . 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 12180 | . . . . . . . . . 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 12165 | . . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℂ) | |
| 10 | nncn 12165 | . . . . . . . . . . . 12 ⊢ (𝑧 ∈ ℕ → 𝑧 ∈ ℂ) | |
| 11 | 9, 10 | anim12i 614 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) → (𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ)) |
| 12 | nncn 12165 | . . . . . . . . . . . 12 ⊢ (𝑦 ∈ ℕ → 𝑦 ∈ ℂ) | |
| 13 | nncn 12165 | . . . . . . . . . . . 12 ⊢ (𝑤 ∈ ℕ → 𝑤 ∈ ℂ) | |
| 14 | 12, 13 | anim12i 614 | . . . . . . . . . . 11 ⊢ ((𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ) → (𝑦 ∈ ℂ ∧ 𝑤 ∈ ℂ)) |
| 15 | addsub4 11436 | . . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ) ∧ (𝑦 ∈ ℂ ∧ 𝑤 ∈ ℂ)) → ((𝑥 + 𝑧) − (𝑦 + 𝑤)) = ((𝑥 − 𝑦) + (𝑧 − 𝑤))) | |
| 16 | 11, 14, 15 | syl2an 597 | . . . . . . . . . 10 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → ((𝑥 + 𝑧) − (𝑦 + 𝑤)) = ((𝑥 − 𝑦) + (𝑧 − 𝑤))) |
| 17 | 16 | eqcomd 2743 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → ((𝑥 − 𝑦) + (𝑧 − 𝑤)) = ((𝑥 + 𝑧) − (𝑦 + 𝑤))) |
| 18 | rspceov 7417 | . . . . . . . . 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 1374 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℕ ∧ 𝑧 ∈ ℕ) ∧ (𝑦 ∈ ℕ ∧ 𝑤 ∈ ℕ)) → ∃𝑢 ∈ ℕ ∃𝑣 ∈ ℕ ((𝑥 − 𝑦) + (𝑧 − 𝑤)) = (𝑢 − 𝑣)) |
| 20 | elz2 12518 | . . . . . . . 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 7377 | . . . . . . . 8 ⊢ ((𝑀 = (𝑥 − 𝑦) ∧ 𝑁 = (𝑧 − 𝑤)) → (𝑀 + 𝑁) = ((𝑥 − 𝑦) + (𝑧 − 𝑤))) | |
| 23 | 22 | eleq1d 2822 | . . . . . . 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 3195 | . . . . 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 3180 | . . 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 599 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 + 𝑁) ∈ ℤ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∃wrex 3062 (class class class)co 7368 ℂcc 11036 + caddc 11041 − cmin 11376 ℕcn 12157 ℤcz 12500 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-nn 12158 df-n0 12414 df-z 12501 |
| This theorem is referenced by: peano2z 12544 zsubcl 12545 zrevaddcl 12548 zdivadd 12575 zaddcld 12612 eluzadd 12792 nn0pzuz 12830 fzen 13469 fzaddel 13486 fzadd2 13487 fzrev3 13518 fzrevral3 13542 elfzmlbp 13567 fzoun 13624 fzoaddel 13645 zpnn0elfzo 13666 elfzomelpfzo 13700 fzoshftral 13715 modsumfzodifsn 13879 ccatsymb 14518 ccatval21sw 14521 lswccatn0lsw 14527 swrdccatin2 14664 revccat 14701 2cshw 14748 cshweqrep 14756 2cshwcshw 14760 cshwcsh2id 14763 cshco 14771 climshftlem 15509 isershft 15599 iseraltlem2 15618 fsumzcl 15670 zrisefaccl 15955 summodnegmod 16225 dvds2ln 16228 dvds2add 16229 dvdsadd 16241 dvdsadd2b 16245 addmodlteqALT 16264 3dvdsdec 16271 3dvds2dec 16272 opoe 16302 opeo 16304 divalglem2 16334 ndvdsadd 16349 gcdaddmlem 16463 pythagtriplem9 16764 difsqpwdvds 16827 gzaddcl 16877 mod2xnegi 17011 cshwshashlem2 17036 cycsubgcl 19147 efgredleme 19684 zaddablx 19813 pgpfac1lem2 20018 zsubrg 21387 zringsub 21422 zringmulg 21423 expghm 21442 mulgghm2 21443 pzriprnglem4 21451 cygznlem3 21536 iaa 26301 dchrisumlem1 27468 axlowdimlem16 29042 crctcshwlkn0lem4 29898 crctcshwlkn0 29906 clwwlkccatlem 30076 clwwisshclwwslemlem 30100 elrgspnlem1 33336 ballotlemsima 34694 mzpclall 43084 mzpindd 43103 rmxyadd 43278 jm2.18 43345 inductionexd 44511 dvdsn1add 46297 stoweidlem34 46392 fourierswlem 46588 nthrucw 47244 2elfz2melfz 47678 submodaddmod 47701 submodneaddmod 47711 modmkpkne 47721 opoeALTV 48043 opeoALTV 48044 even3prm2 48079 mogoldbblem 48080 gbowgt5 48122 gboge9 48124 sbgoldbst 48138 2zrngamgm 48605 |
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