| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > ssel2 | GIF version | ||
| Description: Membership relationships follow from a subclass relationship. (Contributed by NM, 7-Jun-2004.) |
| Ref | Expression |
|---|---|
| ssel2 | ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐶 ∈ 𝐴) → 𝐶 ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssel 3236 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∈ 𝐴 → 𝐶 ∈ 𝐵)) | |
| 2 | 1 | imp 124 | 1 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐶 ∈ 𝐴) → 𝐶 ∈ 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∈ wcel 2205 ⊆ wss 3214 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-in 3220 df-ss 3227 |
| This theorem is referenced by: elnn 4733 funimass4 5732 fvelimab 5738 ssimaex 5743 funconstss 5801 rexima 5933 ralima 5934 1st2nd 6388 f1o2ndf1 6437 tfri1dALT 6595 eldju1st 7375 axsuploc 8362 lbinf 9239 dfinfre 9247 lbzbi 9966 elfzom1elp1fzo 10569 ssfzo12 10591 seq3split 10874 seqsplitg 10875 shftlem 11526 uzwodc 12758 subgintm 13951 subrngintm 14458 subrgintm 14489 tgcl 15055 neipsm 15145 txbasval 15258 elmopn2 15440 metrest 15497 cncfmet 15583 negcncf 15596 ply1term 15734 plyconst 15736 reeff1olem 15762 usgruspgrben 16307 |
| Copyright terms: Public domain | W3C validator |