| 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 3355 |
. 2
| |
| 2 | inss1 3383 |
. 2
| |
| 3 | 1, 2 | eqsstrri 3216 |
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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 |
| This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-v 2765 df-in 3163 df-ss 3170 |
| This theorem is referenced by: difin0 3524 bnd2 4206 ordin 4420 relin2 4782 relres 4974 ssrnres 5112 cnvcnv 5122 funinsn 5307 funimaexg 5342 fnresin2 5373 ssimaex 5622 ffvresb 5725 ofrfval 6144 ofvalg 6145 ofrval 6146 off 6148 ofres 6150 ofco 6154 offres 6192 tpostpos 6322 smores3 6351 tfrlem5 6372 tfrexlem 6392 erinxp 6668 pmresg 6735 unfiin 6987 ltrelpi 7391 peano5nnnn 7959 peano5nni 8993 rexanuz 11153 structcnvcnv 12694 ressbasssd 12747 restsspw 12920 eltg4i 14291 ntrss2 14357 ntrin 14360 isopn3 14361 resttopon 14407 restuni2 14413 cnrest2r 14473 cnptopresti 14474 cnptoprest 14475 lmss 14482 metrest 14742 tgioo 14790 2sqlem8 15364 2sqlem9 15365 peano5set 15586 |
| Copyright terms: Public domain | W3C validator |