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Mirrors > Home > ILE Home > Th. List > uneq2i | Unicode version |
Description: Inference adding union to the left in a class equality. (Contributed by NM, 30-Aug-1993.) |
Ref | Expression |
---|---|
uneq1i.1 |
Ref | Expression |
---|---|
uneq2i |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | uneq1i.1 | . 2 | |
2 | uneq2 3224 | . 2 | |
3 | 1, 2 | ax-mp 5 | 1 |
Colors of variables: wff set class |
Syntax hints: wceq 1331 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 |
This theorem is referenced by: un4 3236 unundir 3238 difun2 3442 difdifdirss 3447 qdass 3620 qdassr 3621 unisuc 4335 iunsuc 4342 fmptap 5610 fvsnun1 5617 rdgival 6279 rdg0 6284 undifdc 6812 exmidfodomrlemim 7057 djuassen 7073 facnn 10473 fac0 10474 fsum2dlemstep 11203 fsumiun 11246 |
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