| 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 3218 | . 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 2200 ⊆ wss 3197 |
| 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 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-11 1552 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-in 3203 df-ss 3210 |
| This theorem is referenced by: elnn 4698 funimass4 5686 fvelimab 5692 ssimaex 5697 funconstss 5755 rexima 5884 ralima 5885 1st2nd 6333 f1o2ndf1 6380 tfri1dALT 6503 eldju1st 7249 axsuploc 8230 lbinf 9106 dfinfre 9114 lbzbi 9823 elfzom1elp1fzo 10420 ssfzo12 10442 seq3split 10722 seqsplitg 10723 shftlem 11342 uzwodc 12573 subgintm 13750 subrngintm 14191 subrgintm 14222 tgcl 14753 neipsm 14843 txbasval 14956 elmopn2 15138 metrest 15195 cncfmet 15281 negcncf 15294 ply1term 15432 plyconst 15434 reeff1olem 15460 usgruspgrben 15999 |
| Copyright terms: Public domain | W3C validator |