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Related theorems GIF version |
| Description: Membership relationships follow from a subclass relationship. |
| Ref | Expression |
|---|---|
| ssel2 | ⊢ ((A ⊆ B ⋀ C ∈ A) → C ∈ B) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssel 2115 | . 2 ⊢ (A ⊆ B → (C ∈ A → C ∈ B)) | |
| 2 | 1 | imp 348 | 1 ⊢ ((A ⊆ B ⋀ C ∈ A) → C ∈ B) |
| Colors of variables: wff set class |
| Syntax hints: → wi 3 ⋀ wa 221 ∈ wcel 994 ⊆ wss 2099 |
| This theorem is referenced by: tz7.7 3001 onmindif 3061 ordunisssuc 3072 onnmin 3160 onmindif2 3169 limsssuc 3204 ssimaex 3879 1st2nd 4168 fundmen 4569 isfinite2 4692 suplem2pr 5316 axsup 5661 lbinfm 6216 suprleub 6227 dfinfmr 6235 infmrcl 6237 xrsupsslem 6244 xrinfmsslem 6245 xrub 6248 supxr2 6250 supxrre 6251 supxrun 6253 supxrunb1 6257 supxrbnd 6259 supxrbnd1 6263 supxrbnd2 6264 supxrub 6266 supxrleub 6267 uzwo4OLD 6381 uzwo 6582 uzwoOLD 6583 shftf 6716 sumeqfv 7200 infxpidmlem5 7768 infxpidmlem7 7770 infxpidmlem8 7771 tgcl 7836 cctop 7862 neips 7937 isopn4 8072 opni3 8076 opnuni 8078 lpbl 8090 metequiv 8091 metcnplem 8097 metelcls 8176 ubthlem11 8797 ocsh 9432 ocorth 9440 spansncvi 9875 pjss1coi 10371 sumdmdii 10624 tostos 10883 efilcp 11083 efilcp2 11087 xpss1 11403 xpss2 11404 fiuni 11420 compsublem 11487 compsub 11488 hscptsscld 11491 compfipin0lem 11492 compfipin0 11493 cncomp 11494 subtopmetlem 11505 subtopmet 11506 reconnlem1 11507 reconn 11512 isfne3 11543 fness 11552 ssref 11553 comppfsc 11578 neibastop2lem3 11582 topjoin 11588 fnemeet1 11589 fnemeet2 11590 fnejoin1 11591 fgbas 11636 fbfgss 11640 limfilcf 11683 fmfnfmlem4 11703 fcluscomp 11733 ssga 11777 fipreima 11848 frinfm 11850 filbcmb 11857 nnubfi 11881 nninfnub 11882 blssp 11908 metsstop 11909 mettrifi 11912 mettrifi2 11913 geomcau 11914 lmtlm 11969 uptx 11978 txsubsp 11983 sstotbnd 11992 totbndss 11993 bndss 11998 totbndbnd 12000 heiborlem8 12018 heiborlem10 12020 heiborlem11 12021 heiborlem13 12023 rrntotbnd 12078 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 998 ax-gen 999 ax-8 1000 ax-10 1002 ax-12 1004 ax-17 1007 ax-4 1009 ax-5o 1011 ax-6o 1014 ax-9o 1159 ax-10o 1177 ax-16 1247 ax-11o 1255 ax-ext 1500 |
| This theorem depends on definitions: df-bi 145 df-an 223 df-ex 1017 df-sb 1209 df-clab 1506 df-cleq 1511 df-clel 1514 df-in 2103 df-ss 2105 |