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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 3365 |
. 2
| |
| 2 | inss1 3393 |
. 2
| |
| 3 | 1, 2 | eqsstrri 3226 |
1
|
| 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 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-ext 2187 |
| This theorem depends on definitions: df-bi 117 df-tru 1376 df-nf 1484 df-sb 1786 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-v 2774 df-in 3172 df-ss 3179 |
| This theorem is referenced by: difin0 3534 bnd2 4217 ordin 4432 relin2 4794 relres 4987 ssrnres 5125 cnvcnv 5135 funinsn 5323 funimaexg 5358 fnresin2 5391 ssimaex 5640 ffvresb 5743 ofrfval 6167 ofvalg 6168 ofrval 6169 off 6171 ofres 6173 ofco 6177 offres 6220 tpostpos 6350 smores3 6379 tfrlem5 6400 tfrexlem 6420 erinxp 6696 pmresg 6763 unfiin 7023 ltrelpi 7437 peano5nnnn 8005 peano5nni 9039 rexanuz 11299 bitsinv1 12273 structcnvcnv 12848 ressbasssd 12901 restsspw 13081 eltg4i 14527 ntrss2 14593 ntrin 14596 isopn3 14597 resttopon 14643 restuni2 14649 cnrest2r 14709 cnptopresti 14710 cnptoprest 14711 lmss 14718 metrest 14978 tgioo 15026 2sqlem8 15600 2sqlem9 15601 peano5set 15880 |
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