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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 7086 pw2f1odclem 7140 fiss 7316 genipv 7882 suplocexprlemlub 8097 hashfibclem 11303 hashfacen 11305 hashf1lem1 11306 ovshftex 11605 strslssd 13456 ressbas2d 13480 ressval3d 13484 ressabsg 13488 restid2 13660 ptex 13676 divsfval 13707 divsfvalg 13708 gzsumvalx 13767 issubmnd 13813 ress0g 13814 issubg2m 14050 releqgg 14081 eqgex 14082 eqgfval 14083 isghm 14104 prdsval 14279 prdsbaslemss 14280 ringidss 14440 dvdsrvald 14508 dvdsrex 14513 unitgrp 14531 unitabl 14532 unitlinv 14541 unitrinv 14542 dvrfvald 14548 rdivmuldivd 14559 invrpropdg 14564 rhmunitinv 14593 subrgugrp 14656 aprval 14699 aprap 14706 aprprop 14709 sralemg 14883 srascag 14887 sravscag 14888 sraipg 14889 sraex 14891 2basgeng 15325 cnrest2 15479 cnptopresti 15481 cnptoprest 15482 cnptoprest2 15483 cnmpt2res 15540 psmetres2 15576 xmetres2 15622 limccnp2lem 15919 limccnp2cntop 15920 dvfvalap 15924 dvmulxxbr 15945 dvaddxx 15946 dvmulxx 15947 dviaddf 15948 dvimulf 15949 dvcoapbr 15950 dvmptaddx 15962 dvmptmulx 15963 plycj 16004 wksfval 16785 wlkex 16788 trlsfvalg 16846 trlsex 16850 eupthsg 16908 |
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