| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 8309 |
. 2
| |
| 2 | zsscn 9661 |
. 2
| |
| 3 | 1, 2 | ssexi 4273 |
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 4251 ax-cnex 8276 ax-resscn 8277 |
| 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 4132 df-iota 5340 df-fv 5388 df-ov 6091 df-neg 8507 df-z 9654 |
| This theorem is used by: dfuzi 9766 uzval 9938 uzf 9939 fzval 10429 fzf 10431 flval 10723 frec2uzrand 10862 frec2uzf1od 10863 frecfzennn 10883 uzennn 10893 hashinfom 11238 climz 12082 serclim0 12095 climaddc1 12119 climmulc2 12121 climsubc1 12122 climsubc2 12123 climle 12124 climlec2 12131 iserabs 12266 isumshft 12281 explecnv 12296 prodfclim1 12335 qnumval 12989 qdenval 12990 odzval 13048 ballotfilemfval 13286 znnen 13346 exmidunben 13374 qnnen 13379 fngzsum 13766 gzsumvalx 13767 mulgfvalg 13982 mulgex 13984 zringplusg 15040 zringmulr 15042 zringmpg 15049 zrhval2 15062 lmres 15491 climcncf 15827 |
| Copyright terms: Public domain | W3C validator |