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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 8303 |
. 2
| |
| 2 | zsscn 9656 |
. 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 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 8501 df-z 9649 |
| This theorem is used by: dfuzi 9760 uzval 9932 uzf 9933 fzval 10423 fzf 10425 flval 10717 frec2uzrand 10855 frec2uzf1od 10856 frecfzennn 10876 uzennn 10886 hashinfom 11231 climz 12074 serclim0 12087 climaddc1 12111 climmulc2 12113 climsubc1 12114 climsubc2 12115 climle 12116 climlec2 12123 iserabs 12258 isumshft 12273 explecnv 12288 prodfclim1 12327 qnumval 12981 qdenval 12982 odzval 13040 ballotfilemfval 13278 znnen 13338 exmidunben 13366 qnnen 13371 fngzsum 13757 gzsumvalx 13758 mulgfvalg 13973 mulgex 13975 zringplusg 14981 zringmulr 14983 zringmpg 14990 zrhval2 15003 lmres 15398 climcncf 15734 |
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