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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 2066 | . 2 ⊢ (A ⊆ B → (C ∈ A → C ∈ B)) | |
| 2 | 1 | imp 350 | 1 ⊢ ((A ⊆ B ⋀ C ∈ A) → C ∈ B) |
| Colors of variables: wff set class |
| Syntax hints: → wi 3 ⋀ wa 223 ∈ wcel 960 ⊆ wss 2050 |
| This theorem is referenced by: tz7.7 2979 onnmin 3021 onmindif 3066 onmindif2 3067 ordunisssuc 3089 limsssuc 3127 ssimaex 3774 1st2nd 4114 fundmen 4434 isfinite2 4557 isfinite2OLD 4558 suplem2pr 5174 axsup 5519 lbinfm 6050 suprleub 6061 dfinfmr 6069 infmrcl 6071 xrsupsslem 6078 xrinfmsslem 6079 xrub 6082 supxr2 6084 supxrre 6085 supxrun 6087 supxrunb1 6091 supxrbnd 6093 supxrbnd1 6097 supxrbnd2 6098 supxrub 6100 supxrleub 6101 uzwo4OLD 6212 shftf 6352 uzwo 6456 uzwoOLD 6457 sumeqfv 6997 infxpidmlem5 7557 infxpidmlem7 7559 infxpidmlem8 7560 tgclt 7623 fctopOLD 7647 cctop 7649 neips 7724 isopn4 7859 opni3 7863 opnuni 7865 lpbl 7877 metcnplem 7883 metelcls 7962 ubthlem11 8535 ocsh 9151 ocorth 9159 spansncv 9592 pjss1co 10086 sumdmdi 10337 efilcp 10556 efilcp2 10561 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-10 968 ax-12 970 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-ex 983 df-sb 1174 df-clab 1467 df-cleq 1472 df-clel 1475 df-in 2054 df-ss 2056 |