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Mirrors > Home > ILE Home > Th. List > onelssi | Unicode version |
Description: A member of an ordinal number is a subset of it. (Contributed by NM, 11-Aug-1994.) |
Ref | Expression |
---|---|
on.1 |
Ref | Expression |
---|---|
onelssi |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | on.1 | . 2 | |
2 | onelss 4370 | . 2 | |
3 | 1, 2 | ax-mp 5 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wcel 2141 wss 3121 con0 4346 |
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-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-ext 2152 |
This theorem depends on definitions: df-bi 116 df-tru 1351 df-nf 1454 df-sb 1756 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-in 3127 df-ss 3134 df-uni 3795 df-tr 4086 df-iord 4349 df-on 4351 |
This theorem is referenced by: onelini 4413 oneluni 4414 omp1eomlem 7067 enumctlemm 7087 ennnfonelemdc 12341 ennnfonelemg 12345 ctinfom 12370 2o01f 13989 isomninnlem 14022 iswomninnlem 14041 ismkvnnlem 14044 |
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