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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | incom 3273 |
. 2
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2 | inss1 3301 |
. 2
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3 | 1, 2 | eqsstrri 3135 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() |
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 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-v 2691 df-in 3082 df-ss 3089 |
This theorem is referenced by: difin0 3441 bnd2 4105 ordin 4315 relin2 4666 relres 4855 ssrnres 4989 cnvcnv 4999 funinsn 5180 funimaexg 5215 fnresin2 5246 ssimaex 5490 ffvresb 5591 ofrfval 5998 ofvalg 5999 ofrval 6000 off 6002 ofres 6004 ofco 6008 offres 6041 tpostpos 6169 smores3 6198 tfrlem5 6219 tfrexlem 6239 erinxp 6511 pmresg 6578 unfiin 6822 ltrelpi 7156 peano5nnnn 7724 peano5nni 8747 rexanuz 10792 structcnvcnv 12014 restsspw 12169 eltg4i 12263 ntrss2 12329 ntrin 12332 isopn3 12333 resttopon 12379 restuni2 12385 cnrest2r 12445 cnptopresti 12446 cnptoprest 12447 lmss 12454 metrest 12714 tgioo 12754 peano5set 13309 |
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