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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ancom 264 |
. . 3
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2 | elin 3264 |
. . 3
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3 | elin 3264 |
. . 3
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4 | 1, 2, 3 | 3bitr4i 211 |
. 2
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5 | 4 | eqriv 2137 |
1
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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 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-v 2691 df-in 3082 |
This theorem is referenced by: ineq2 3276 dfss1 3285 in12 3292 in32 3293 in13 3294 in31 3295 inss2 3302 sslin 3307 inss 3311 indif1 3326 indifcom 3327 indir 3330 symdif1 3346 dfrab2 3356 0in 3403 disjr 3417 ssdifin0 3449 difdifdirss 3452 uneqdifeqim 3453 diftpsn3 3669 iunin1 3885 iinin1m 3890 riinm 3893 rintm 3913 inex2 4071 onintexmid 4495 resiun1 4846 dmres 4848 rescom 4852 resima2 4861 xpssres 4862 resindm 4869 resdmdfsn 4870 resopab 4871 imadisj 4909 ndmima 4924 intirr 4933 djudisj 4974 imainrect 4992 dmresv 5005 resdmres 5038 funimaexg 5215 fnresdisj 5241 fnimaeq0 5252 resasplitss 5310 f0rn0 5325 fvun2 5496 ressnop0 5609 fvsnun1 5625 fsnunfv 5629 offres 6041 smores3 6198 phplem2 6755 unfiin 6822 xpfi 6826 endjusym 6989 djucomen 7089 fzpreddisj 9882 fseq1p1m1 9905 hashunlem 10582 zfz1isolem1 10615 znnen 11947 setsfun 12033 setsfun0 12034 setsslid 12048 restin 12384 metreslem 12588 bdinex2 13269 |
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