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Mirrors > Home > ILE Home > Th. List > inss2 | Unicode version |
Description: The intersection of two classes is a subset of one of them. Part of Exercise 12 of [TakeutiZaring] p. 18. (Contributed by NM, 27-Apr-1994.) |
Ref | Expression |
---|---|
inss2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | incom 3300 | . 2 | |
2 | inss1 3328 | . 2 | |
3 | 1, 2 | eqsstrri 3161 | 1 |
Colors of variables: wff set class |
Syntax hints: cin 3101 wss 3102 |
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 699 ax-5 1427 ax-7 1428 ax-gen 1429 ax-ie1 1473 ax-ie2 1474 ax-8 1484 ax-10 1485 ax-11 1486 ax-i12 1487 ax-bndl 1489 ax-4 1490 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2139 |
This theorem depends on definitions: df-bi 116 df-tru 1338 df-nf 1441 df-sb 1743 df-clab 2144 df-cleq 2150 df-clel 2153 df-nfc 2288 df-v 2714 df-in 3108 df-ss 3115 |
This theorem is referenced by: difin0 3468 bnd2 4136 ordin 4347 relin2 4707 relres 4896 ssrnres 5030 cnvcnv 5040 funinsn 5221 funimaexg 5256 fnresin2 5287 ssimaex 5531 ffvresb 5632 ofrfval 6042 ofvalg 6043 ofrval 6044 off 6046 ofres 6048 ofco 6052 offres 6085 tpostpos 6213 smores3 6242 tfrlem5 6263 tfrexlem 6283 erinxp 6556 pmresg 6623 unfiin 6872 ltrelpi 7246 peano5nnnn 7814 peano5nni 8841 rexanuz 10899 structcnvcnv 12276 restsspw 12431 eltg4i 12525 ntrss2 12591 ntrin 12594 isopn3 12595 resttopon 12641 restuni2 12647 cnrest2r 12707 cnptopresti 12708 cnptoprest 12709 lmss 12716 metrest 12976 tgioo 13016 peano5set 13586 |
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