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| Mirrors > Home > ILE Home > Th. List > zex | Unicode version | ||
| Description: The set of integers exists. (Contributed by NM, 30-Jul-2004.) (Revised by Mario Carneiro, 17-Nov-2014.) |
| Ref | Expression |
|---|---|
| zex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnex 8304 |
. 2
| |
| 2 | zsscn 9657 |
. 2
| |
| 3 | 1, 2 | ssexi 4271 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| 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 8271 ax-resscn 8272 |
| 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 8502 df-z 9650 |
| This theorem is used by: dfuzi 9761 uzval 9933 uzf 9934 fzval 10424 fzf 10426 flval 10718 frec2uzrand 10857 frec2uzf1od 10858 frecfzennn 10878 uzennn 10888 hashinfom 11233 climz 12077 serclim0 12090 climaddc1 12114 climmulc2 12116 climsubc1 12117 climsubc2 12118 climle 12119 climlec2 12126 iserabs 12261 isumshft 12276 explecnv 12291 prodfclim1 12330 qnumval 12984 qdenval 12985 odzval 13043 ballotfilemfval 13281 znnen 13341 exmidunben 13369 qnnen 13374 fngzsum 13761 gzsumvalx 13762 mulgfvalg 13977 mulgex 13979 zringplusg 15016 zringmulr 15018 zringmpg 15025 zrhval2 15038 lmres 15440 climcncf 15776 |
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