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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 3217 | . 2 | |
2 | df-br 3930 | . 2 | |
3 | df-br 3930 | . . 3 | |
4 | df-br 3930 | . . 3 | |
5 | 3, 4 | orbi12i 753 | . 2 |
6 | 1, 2, 5 | 3bitr4i 211 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 104 wo 697 wcel 1480 cun 3069 cop 3530 class class class wbr 3929 |
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-br 3930 |
This theorem is referenced by: dmun 4746 qfto 4928 poleloe 4938 cnvun 4944 coundi 5040 coundir 5041 brdifun 6456 ltxrlt 7830 ltxr 9562 |
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