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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 3396 |
. 2
| |
| 2 | inss1 3424 |
. 2
| |
| 3 | 1, 2 | eqsstrri 3257 |
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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2801 df-in 3203 df-ss 3210 |
| This theorem is referenced by: difin0 3565 bnd2 4257 ordin 4476 relin2 4838 relres 5033 ssrnres 5171 cnvcnv 5181 funinsn 5370 funimaexg 5405 fnresin2 5439 ssimaex 5695 ffvresb 5798 ofrfval 6227 ofvalg 6228 ofrval 6229 off 6231 ofres 6233 ofco 6237 offres 6280 tpostpos 6410 smores3 6439 tfrlem5 6460 tfrexlem 6480 erinxp 6756 pmresg 6823 unfiin 7088 ltrelpi 7511 peano5nnnn 8079 peano5nni 9113 rexanuz 11499 bitsinv1 12473 structcnvcnv 13048 ressbasssd 13102 restsspw 13282 eltg4i 14729 ntrss2 14795 ntrin 14798 isopn3 14799 resttopon 14845 restuni2 14851 cnrest2r 14911 cnptopresti 14912 cnptoprest 14913 lmss 14920 metrest 15180 tgioo 15228 2sqlem8 15802 2sqlem9 15803 peano5set 16303 |
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