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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 3352 |
. 2
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2 | inss1 3380 |
. 2
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3 | 1, 2 | eqsstrri 3213 |
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 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-ext 2175 |
This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-v 2762 df-in 3160 df-ss 3167 |
This theorem is referenced by: difin0 3521 bnd2 4203 ordin 4417 relin2 4779 relres 4971 ssrnres 5109 cnvcnv 5119 funinsn 5304 funimaexg 5339 fnresin2 5370 ssimaex 5619 ffvresb 5722 ofrfval 6141 ofvalg 6142 ofrval 6143 off 6145 ofres 6147 ofco 6151 offres 6189 tpostpos 6319 smores3 6348 tfrlem5 6369 tfrexlem 6389 erinxp 6665 pmresg 6732 unfiin 6984 ltrelpi 7386 peano5nnnn 7954 peano5nni 8987 rexanuz 11135 structcnvcnv 12637 ressbasssd 12690 restsspw 12863 eltg4i 14234 ntrss2 14300 ntrin 14303 isopn3 14304 resttopon 14350 restuni2 14356 cnrest2r 14416 cnptopresti 14417 cnptoprest 14418 lmss 14425 metrest 14685 tgioo 14733 2sqlem8 15280 2sqlem9 15281 peano5set 15502 |
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