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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 4274. (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 4274 |
. 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 4251 |
| 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 4280 iotaexab 5359 fex2 5559 riotaexg 6045 opabbrex 6135 funexw 6345 opabex2 6432 f1imaen2g 7084 pw2f1odclem 7138 fiss 7316 genipv 7882 suplocexprlemlub 8097 hashfibclem 11304 hashfacen 11306 hashf1lem1 11307 ovshftex 11606 strslssd 13457 ressbas2d 13481 ressval3d 13485 ressabsg 13489 restid2 13661 ptex 13677 divsfval 13708 divsfvalg 13709 gzsumvalx 13768 issubmnd 13814 ress0g 13815 issubg2m 14051 releqgg 14082 eqgex 14083 eqgfval 14084 isghm 14105 prdsval 14280 prdsbaslemss 14281 ringidss 14441 dvdsrvald 14509 dvdsrex 14514 unitgrp 14532 unitabl 14533 unitlinv 14542 unitrinv 14543 dvrfvald 14549 rdivmuldivd 14560 invrpropdg 14565 rhmunitinv 14594 subrgugrp 14657 aprval 14700 aprap 14707 aprprop 14710 sralemg 14884 srascag 14888 sravscag 14889 sraipg 14890 sraex 14892 2basgeng 15308 cnrest2 15462 cnptopresti 15464 cnptoprest 15465 cnptoprest2 15466 cnmpt2res 15523 psmetres2 15559 xmetres2 15605 limccnp2lem 15902 limccnp2cntop 15903 dvfvalap 15907 dvmulxxbr 15928 dvaddxx 15929 dvmulxx 15930 dviaddf 15931 dvimulf 15932 dvcoapbr 15933 dvmptaddx 15945 dvmptmulx 15946 plycj 15987 wksfval 16768 wlkex 16771 trlsfvalg 16829 trlsex 16833 eupthsg 16891 |
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