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Mirrors > Home > ILE Home > Th. List > absneu | Unicode version |
Description: Restricted existential uniqueness determined by a singleton. (Contributed by NM, 29-May-2006.) |
Ref | Expression |
---|---|
absneu |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sneq 3582 | . . . . 5 | |
2 | 1 | eqeq2d 2176 | . . . 4 |
3 | 2 | spcegv 2810 | . . 3 |
4 | 3 | imp 123 | . 2 |
5 | euabsn2 3640 | . 2 | |
6 | 4, 5 | sylibr 133 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1342 wex 1479 weu 2013 wcel 2135 cab 2150 csn 3571 |
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 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-ext 2146 |
This theorem depends on definitions: df-bi 116 df-tru 1345 df-nf 1448 df-sb 1750 df-eu 2016 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-v 2724 df-sn 3577 |
This theorem is referenced by: rabsneu 3644 |
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