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| Mirrors > Home > ILE Home > Th. List > sseq2d | Unicode version | ||
| Description: An equality deduction for the subclass relationship. (Contributed by NM, 14-Aug-1994.) |
| Ref | Expression |
|---|---|
| sseq1d.1 |
|
| Ref | Expression |
|---|---|
| sseq2d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sseq1d.1 |
. 2
| |
| 2 | sseq2 3272 |
. 2
| |
| 3 | 1, 2 | syl 14 |
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-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-in 3226 df-ss 3233 |
| This theorem is used by: sseq12d 3279 sseqtrd 3286 exmidsssn 4339 exmidsssnc 4340 onsucsssucexmid 4674 sbcrel 4861 funimass2 5459 fnco 5491 fnssresb 5495 fnimaeq0 5505 foimacnv 5657 fvelimab 5759 ssimaexg 5765 fvmptss2 5780 rdgss 6654 papeq2 7610 tapeq2 7619 fzowrddc 11419 swrdnd 11431 swrd0g 11432 summodclem2 12149 summodc 12150 zsumdc 12151 fsum3cvg3 12163 prodmodclem2 12344 prodmodc 12345 zproddc 12346 ennnfoneleminc 13302 tgval 13616 releqgg 14023 eqgex 14024 eqgfval 14025 prdsval 14173 opprsubgg 14390 unitsubm 14426 subrngpropd 14524 subrgsubm 14542 issubrg3 14555 subrgpropd 14561 lsslss 14718 lsspropdg 14768 islidlm 14816 rspcl 14828 rspssid 14829 isbasisg 15145 tgss3 15179 restbasg 15269 tgrest 15270 restopn2 15284 cnpnei 15320 cnptopresti 15339 txbas 15359 elmopn 15547 neibl 15592 dvfgg 15789 incistruhgr 16331 edgssv2en 16440 wksfval 16563 |
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