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| Mirrors > Home > ILE Home > Th. List > sseq1d | Unicode version | ||
| Description: An equality deduction for the subclass relationship. (Contributed by NM, 14-Aug-1994.) |
| Ref | Expression |
|---|---|
| sseq1d.1 |
|
| Ref | Expression |
|---|---|
| sseq1d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sseq1d.1 |
. 2
| |
| 2 | sseq1 3271 |
. 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 eqsstrd 3284 snssgOLD 3851 ssiun2s 4056 treq 4237 onsucsssucexmid 4676 funimass1 5461 feq1 5519 sbcfg 5535 fvmptssdm 5793 fvimacnvi 5826 nnsucsssuc 6770 ereq1 6819 elpm2r 6945 isfsuppfid 7297 fipwssg 7318 nnnninf 7472 ctssexmid 7496 rspssp 14939 mplsubgfilemcl 15232 iscnp 15442 iscnp4 15461 cnntr 15468 cnconst2 15476 cnptopresti 15481 cnptoprest 15482 txbas 15501 txcnp 15514 txdis 15520 txdis1cn 15521 blssps 15670 blss 15671 ssblex 15674 blin2 15675 metss2 15741 metrest 15749 metcnp3 15754 cnopnap 15854 limccl 15902 ellimc3apf 15903 ausgrumgrien 16633 ausgrusgrien 16634 eupth2lem3lem4fi 16936 |
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