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Mirrors > Home > ILE Home > Th. List > nfeudv | Unicode version |
Description: Deduction version of nfeu 2018. Similar to nfeud 2015 but has the additional constraint that and must be distinct. (Contributed by Jim Kingdon, 25-May-2018.) |
Ref | Expression |
---|---|
nfeudv.1 | |
nfeudv.2 |
Ref | Expression |
---|---|
nfeudv |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfv 1508 | . . 3 | |
2 | nfeudv.1 | . . . 4 | |
3 | nfeudv.2 | . . . . 5 | |
4 | nfv 1508 | . . . . . 6 | |
5 | 4 | a1i 9 | . . . . 5 |
6 | 3, 5 | nfbid 1567 | . . . 4 |
7 | 2, 6 | nfald 1733 | . . 3 |
8 | 1, 7 | nfexd 1734 | . 2 |
9 | df-eu 2002 | . . 3 | |
10 | 9 | nfbii 1449 | . 2 |
11 | 8, 10 | sylibr 133 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 104 wal 1329 wceq 1331 wnf 1436 wex 1468 weu 1999 |
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-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-4 1487 ax-17 1506 ax-ial 1514 ax-i5r 1515 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-eu 2002 |
This theorem is referenced by: nfeud 2015 |
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