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Mirrors > Home > ILE Home > Th. List > poss | Unicode version |
Description: Subset theorem for the partial ordering predicate. (Contributed by NM, 27-Mar-1997.) (Proof shortened by Mario Carneiro, 18-Nov-2016.) |
Ref | Expression |
---|---|
poss |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssralv 3161 | . . 3 | |
2 | ssralv 3161 | . . . . 5 | |
3 | ssralv 3161 | . . . . . 6 | |
4 | 3 | ralimdv 2500 | . . . . 5 |
5 | 2, 4 | syld 45 | . . . 4 |
6 | 5 | ralimdv 2500 | . . 3 |
7 | 1, 6 | syld 45 | . 2 |
8 | df-po 4218 | . 2 | |
9 | df-po 4218 | . 2 | |
10 | 7, 8, 9 | 3imtr4g 204 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wa 103 wral 2416 wss 3071 class class class wbr 3929 wpo 4216 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-11 1484 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-ral 2421 df-in 3077 df-ss 3084 df-po 4218 |
This theorem is referenced by: poeq2 4222 soss 4236 fimaxq 10573 |
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