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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 11433 swrdnd 11445 swrd0g 11446 summodclem2 12165 summodc 12166 zsumdc 12167 fsum3cvg3 12179 prodmodclem2 12360 prodmodc 12361 zproddc 12362 ennnfoneleminc 13351 tgval 13665 releqgg 14072 eqgex 14073 eqgfval 14074 prdsval 14222 opprsubgg 14439 unitsubm 14475 subrngpropd 14573 subrgsubm 14591 issubrg3 14604 subrgpropd 14610 lsslss 14767 lsspropdg 14817 islidlm 14865 rspcl 14877 rspssid 14878 isbasisg 15194 tgss3 15228 restbasg 15318 tgrest 15319 restopn2 15333 cnpnei 15369 cnptopresti 15388 txbas 15408 elmopn 15596 neibl 15641 dvfgg 15838 incistruhgr 16429 edgssv2en 16538 wksfval 16661 |
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