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Mirrors > Home > ILE Home > Th. List > brun | Unicode version |
Description: The union of two binary relations. (Contributed by NM, 21-Dec-2008.) |
Ref | Expression |
---|---|
brun |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elun 3187 | . 2 | |
2 | df-br 3900 | . 2 | |
3 | df-br 3900 | . . 3 | |
4 | df-br 3900 | . . 3 | |
5 | 3, 4 | orbi12i 738 | . 2 |
6 | 1, 2, 5 | 3bitr4i 211 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 104 wo 682 wcel 1465 cun 3039 cop 3500 class class class wbr 3899 |
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 683 ax-5 1408 ax-7 1409 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-10 1468 ax-11 1469 ax-i12 1470 ax-bndl 1471 ax-4 1472 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-i5r 1500 ax-ext 2099 |
This theorem depends on definitions: df-bi 116 df-tru 1319 df-nf 1422 df-sb 1721 df-clab 2104 df-cleq 2110 df-clel 2113 df-nfc 2247 df-v 2662 df-un 3045 df-br 3900 |
This theorem is referenced by: dmun 4716 qfto 4898 poleloe 4908 cnvun 4914 coundi 5010 coundir 5011 brdifun 6424 ltxrlt 7798 ltxr 9517 |
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