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Mirrors > Home > ILE Home > Th. List > elun2 | Unicode version |
Description: Membership law for union of classes. (Contributed by NM, 30-Aug-1993.) |
Ref | Expression |
---|---|
elun2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssun2 3240 | . 2 | |
2 | 1 | sseli 3093 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wcel 1480 cun 3069 |
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 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-v 2688 df-un 3075 df-in 3077 df-ss 3084 |
This theorem is referenced by: dcun 3473 exmidundif 4129 exmidundifim 4130 dftpos4 6160 tfrlemibxssdm 6224 tfrlemi14d 6230 tfr1onlembxssdm 6240 tfr1onlemres 6246 tfrcllembxssdm 6253 tfrcllemres 6259 dcdifsnid 6400 findcard2d 6785 findcard2sd 6786 onunsnss 6805 undifdcss 6811 fisseneq 6820 fidcenumlemrks 6841 djurclr 6935 djurcl 6937 djuss 6955 finomni 7012 mnfxr 7822 hashinfuni 10523 fsumsplitsnun 11188 sumsplitdc 11201 modfsummodlem1 11225 exmidunben 11939 srnginvld 12085 lmodvscad 12096 ipsscad 12104 ipsvscad 12105 ipsipd 12106 |
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