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Mirrors > Home > ILE Home > Th. List > unssad | Unicode version |
Description: If is contained in , so is . One-way deduction form of unss 3146. Partial converse of unssd 3148. (Contributed by David Moews, 1-May-2017.) |
Ref | Expression |
---|---|
unssad.1 |
Ref | Expression |
---|---|
unssad |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | unssad.1 | . . 3 | |
2 | unss 3146 | . . 3 | |
3 | 1, 2 | sylibr 132 | . 2 |
4 | 3 | simpld 110 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 cun 2971 wss 2973 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-v 2603 df-un 2977 df-in 2979 df-ss 2986 |
This theorem is referenced by: ersym 6141 findcard2d 6375 findcard2sd 6376 diffifi 6378 |
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