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Mirrors > Home > ILE Home > Th. List > elun1 | Unicode version |
Description: Membership law for union of classes. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
elun1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssun1 3244 |
. 2
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2 | 1 | sseli 3098 |
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-un 3080 df-in 3082 df-ss 3089 |
This theorem is referenced by: dcun 3478 exmidundif 4137 exmidundifim 4138 brtposg 6159 dftpos4 6168 dcdifsnid 6408 undifdcss 6819 fidcenumlemrks 6849 djulclr 6942 djulcl 6944 djuss 6963 finomni 7020 hashennnuni 10557 sumsplitdc 11233 srngbased 12121 srngplusgd 12122 srngmulrd 12123 lmodbased 12132 lmodplusgd 12133 lmodscad 12134 ipsbased 12140 ipsaddgd 12141 ipsmulrd 12142 |
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