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| Mirrors > Home > ILE Home > Th. List > zex | GIF version | ||
| Description: The set of integers exists. (Contributed by NM, 30-Jul-2004.) (Revised by Mario Carneiro, 17-Nov-2014.) |
| Ref | Expression |
|---|---|
| zex | ⊢ ℤ ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnex 8303 | . 2 ⊢ ℂ ∈ V | |
| 2 | zsscn 9652 | . 2 ⊢ ℤ ⊆ ℂ | |
| 3 | 1, 2 | ssexi 4271 | 1 ⊢ ℤ ∈ V |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 Vcvv 2821 ℂcc 8177 ℤcz 9644 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-sep 4249 ax-cnex 8270 ax-resscn 8271 |
| This proof depends on definitions: df-bi 117 df-3or 1010 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-rex 2534 df-rab 2537 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-iota 5337 df-fv 5385 df-ov 6088 df-neg 8500 df-z 9645 |
| This theorem is used by: dfuzi 9756 uzval 9923 uzf 9924 fzval 10413 fzf 10415 flval 10707 frec2uzrand 10842 frec2uzf1od 10843 frecfzennn 10863 uzennn 10873 hashinfom 11217 climz 12058 serclim0 12071 climaddc1 12095 climmulc2 12097 climsubc1 12098 climsubc2 12099 climle 12100 climlec2 12107 iserabs 12242 isumshft 12257 explecnv 12272 prodfclim1 12311 qnumval 12963 qdenval 12964 odzval 13020 ballotfilemfval 13229 znnen 13289 exmidunben 13317 qnnen 13322 fngzsum 13708 gzsumvalx 13709 mulgfvalg 13924 mulgex 13926 zringplusg 14932 zringmulr 14934 zringmpg 14941 zrhval2 14954 lmres 15349 climcncf 15685 |
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