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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 7611 tapeq2 7620 fzowrddc 11435 swrdnd 11447 swrd0g 11448 summodclem2 12168 summodc 12169 zsumdc 12170 fsum3cvg3 12182 prodmodclem2 12363 prodmodc 12364 zproddc 12365 ennnfoneleminc 13354 tgval 13669 releqgg 14076 eqgex 14077 eqgfval 14078 sscntz 14152 resscntz 14160 prdsval 14257 opprsubgg 14474 unitsubm 14510 subrngpropd 14608 subrgsubm 14626 issubrg3 14639 subrgpropd 14645 lsslss 14802 lsspropdg 14852 islidlm 14900 rspcl 14912 rspssid 14913 isbasisg 15236 tgss3 15270 restbasg 15360 tgrest 15361 restopn2 15375 cnpnei 15411 cnptopresti 15430 txbas 15450 elmopn 15638 neibl 15683 dvfgg 15880 incistruhgr 16497 edgssv2en 16606 wksfval 16729 |
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