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Mirrors > Home > ILE Home > Th. List > incom | Unicode version |
Description: Commutative law for intersection of classes. Exercise 7 of [TakeutiZaring] p. 17. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
incom |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ancom 262 | . . 3 | |
2 | elin 3155 | . . 3 | |
3 | elin 3155 | . . 3 | |
4 | 1, 2, 3 | 3bitr4i 210 | . 2 |
5 | 4 | eqriv 2078 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 102 wceq 1284 wcel 1433 cin 2972 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-v 2603 df-in 2979 |
This theorem is referenced by: ineq2 3161 dfss1 3170 in12 3177 in32 3178 in13 3179 in31 3180 inss2 3187 sslin 3192 inss 3195 indif1 3209 indifcom 3210 indir 3213 symdif1 3229 dfrab2 3239 disjr 3293 ssdifin0 3324 difdifdirss 3327 uneqdifeqim 3328 diftpsn3 3527 iunin1 3742 iinin1m 3747 riinm 3750 rintm 3765 inex2 3913 onintexmid 4315 resiun1 4648 dmres 4650 rescom 4654 resima2 4662 xpssres 4663 resindm 4670 resdmdfsn 4671 resopab 4672 imadisj 4707 ndmima 4722 intirr 4731 djudisj 4770 imainrect 4786 dmresv 4799 resdmres 4832 funimaexg 5003 fnresdisj 5029 fnimaeq0 5040 resasplitss 5089 fvun2 5261 ressnop0 5365 fvsnun1 5381 fsnunfv 5384 offres 5782 smores3 5931 phplem2 6339 fzpreddisj 9088 fseq1p1m1 9111 bdinex2 10691 |
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