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Mirrors > Home > ILE Home > Th. List > unidif | Unicode version |
Description: If the difference contains the largest members of , then the union of the difference is the union of . (Contributed by NM, 22-Mar-2004.) |
Ref | Expression |
---|---|
unidif |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | uniss2 3803 | . . 3 | |
2 | difss 3233 | . . . 4 | |
3 | 2 | unissi 3795 | . . 3 |
4 | 1, 3 | jctil 310 | . 2 |
5 | eqss 3143 | . 2 | |
6 | 4, 5 | sylibr 133 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1335 wral 2435 wrex 2436 cdif 3099 wss 3102 cuni 3772 |
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-in1 604 ax-in2 605 ax-io 699 ax-5 1427 ax-7 1428 ax-gen 1429 ax-ie1 1473 ax-ie2 1474 ax-8 1484 ax-10 1485 ax-11 1486 ax-i12 1487 ax-bndl 1489 ax-4 1490 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2139 |
This theorem depends on definitions: df-bi 116 df-tru 1338 df-nf 1441 df-sb 1743 df-clab 2144 df-cleq 2150 df-clel 2153 df-nfc 2288 df-ral 2440 df-rex 2441 df-v 2714 df-dif 3104 df-in 3108 df-ss 3115 df-uni 3773 |
This theorem is referenced by: (None) |
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