| 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 3421 |
. 2
| |
| 2 | inss1 3451 |
. 2
| |
| 3 | 1, 2 | eqsstrri 3281 |
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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-in 3226 df-ss 3233 |
| This theorem is referenced by: vvin 3569 difin0 3601 bnd2 4308 ordin 4528 relin2 4894 relres 5089 ssrnres 5228 cnvcnv 5238 funinsn 5428 funimaexg 5463 fnresin2 5497 ssimaex 5761 ffvresb 5865 fnfvimad 5947 ofrfval 6304 ofvalg 6305 ofrval 6306 off 6308 ofres 6310 ofco 6314 offres 6361 tpostpos 6528 smores3 6557 tfrlem5 6578 tfrexlem 6598 erinxp 6876 pmresg 6950 unfiin 7226 ltrelpi 7684 peano5nnnn 8252 peano5nni 9289 rexanuz 11735 bitsinv1 12710 structcnvcnv 13349 ressbasssd 13403 restsspw 13583 eltg4i 15082 ntrss2 15148 ntrin 15151 isopn3 15152 resttopon 15198 restuni2 15204 cnrest2r 15264 cnptopresti 15265 cnptoprest 15266 lmss 15273 metrest 15533 tgioo 15581 2sqlem8 16159 2sqlem9 16160 peano5set 16883 |
| Copyright terms: Public domain | W3C validator |