| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 4218 ordin 4433 relin2 4795 relres 4988 ssrnres 5126 cnvcnv 5136 funinsn 5324 funimaexg 5359 fnresin2 5393 ssimaex 5642 ffvresb 5745 ofrfval 6169 ofvalg 6170 ofrval 6171 off 6173 ofres 6175 ofco 6179 offres 6222 tpostpos 6352 smores3 6381 tfrlem5 6402 tfrexlem 6422 erinxp 6698 pmresg 6765 unfiin 7025 ltrelpi 7439 peano5nnnn 8007 peano5nni 9041 rexanuz 11332 bitsinv1 12306 structcnvcnv 12881 ressbasssd 12934 restsspw 13114 eltg4i 14560 ntrss2 14626 ntrin 14629 isopn3 14630 resttopon 14676 restuni2 14682 cnrest2r 14742 cnptopresti 14743 cnptoprest 14744 lmss 14751 metrest 15011 tgioo 15059 2sqlem8 15633 2sqlem9 15634 peano5set 15913 |
| Copyright terms: Public domain | W3C validator |