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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 3327 |
. 2
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2 | inss1 3355 |
. 2
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3 | 1, 2 | eqsstrri 3188 |
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 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-ext 2159 |
This theorem depends on definitions: df-bi 117 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-v 2739 df-in 3135 df-ss 3142 |
This theorem is referenced by: difin0 3496 bnd2 4171 ordin 4383 relin2 4743 relres 4932 ssrnres 5068 cnvcnv 5078 funinsn 5262 funimaexg 5297 fnresin2 5328 ssimaex 5574 ffvresb 5676 ofrfval 6086 ofvalg 6087 ofrval 6088 off 6090 ofres 6092 ofco 6096 offres 6131 tpostpos 6260 smores3 6289 tfrlem5 6310 tfrexlem 6330 erinxp 6604 pmresg 6671 unfiin 6920 ltrelpi 7318 peano5nnnn 7886 peano5nni 8916 rexanuz 10988 structcnvcnv 12468 ressbasssd 12519 restsspw 12684 eltg4i 13337 ntrss2 13403 ntrin 13406 isopn3 13407 resttopon 13453 restuni2 13459 cnrest2r 13519 cnptopresti 13520 cnptoprest 13521 lmss 13528 metrest 13788 tgioo 13828 2sqlem8 14241 2sqlem9 14242 peano5set 14463 |
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