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| Mirrors > Home > ILE Home > Th. List > ssexd | Unicode version | ||
| Description: A subclass of a set is a set. Deduction form of ssexg 4272. (Contributed by David Moews, 1-May-2017.) |
| Ref | Expression |
|---|---|
| ssexd.1 |
|
| ssexd.2 |
|
| Ref | Expression |
|---|---|
| ssexd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssexd.2 |
. 2
| |
| 2 | ssexd.1 |
. 2
| |
| 3 | ssexg 4272 |
. 2
| |
| 4 | 1, 2, 3 | syl2anc 415 |
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 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-in 3226 df-ss 3233 |
| This theorem is used by: sepab 4278 iotaexab 5356 fex2 5556 riotaexg 6042 opabbrex 6132 funexw 6341 opabex2 6428 f1imaen2g 7080 pw2f1odclem 7134 fiss 7311 genipv 7877 suplocexprlemlub 8092 hashfibclem 11298 hashfacen 11300 hashf1lem1 11301 ovshftex 11600 strslssd 13451 ressbas2d 13475 ressval3d 13479 ressabsg 13483 restid2 13655 ptex 13671 divsfval 13702 divsfvalg 13703 gzsumvalx 13762 issubmnd 13808 ress0g 13809 issubg2m 14045 releqgg 14076 eqgex 14077 eqgfval 14078 isghm 14099 prdsval 14257 prdsbaslemss 14258 ringidss 14418 dvdsrvald 14484 dvdsrex 14489 unitgrp 14507 unitabl 14508 unitlinv 14517 unitrinv 14518 dvrfvald 14524 rdivmuldivd 14535 invrpropdg 14540 rhmunitinv 14569 subrgugrp 14632 aprval 14675 aprap 14682 aprprop 14685 sralemg 14859 srascag 14863 sravscag 14864 sraipg 14865 sraex 14867 2basgeng 15274 cnrest2 15428 cnptopresti 15430 cnptoprest 15431 cnptoprest2 15432 cnmpt2res 15489 psmetres2 15525 xmetres2 15571 limccnp2lem 15868 limccnp2cntop 15869 dvfvalap 15873 dvmulxxbr 15894 dvaddxx 15895 dvmulxx 15896 dviaddf 15897 dvimulf 15898 dvcoapbr 15899 dvmptaddx 15911 dvmptmulx 15912 plycj 15953 wksfval 16729 wlkex 16732 trlsfvalg 16790 trlsex 16794 eupthsg 16852 |
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