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Mirrors > Home > ILE Home > Th. List > nfeud | Unicode version |
Description: Deduction version of nfeu 1996. (Contributed by NM, 15-Feb-2013.) (Revised by Mario Carneiro, 7-Oct-2016.) (Proof rewritten by Jim Kingdon, 25-May-2018.) |
Ref | Expression |
---|---|
nfeud.1 | |
nfeud.2 |
Ref | Expression |
---|---|
nfeud |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfv 1493 | . . 3 | |
2 | 1 | sb8eu 1990 | . 2 |
3 | nfv 1493 | . . 3 | |
4 | nfeud.1 | . . . 4 | |
5 | nfeud.2 | . . . 4 | |
6 | 4, 5 | nfsbd 1928 | . . 3 |
7 | 3, 6 | nfeudv 1992 | . 2 |
8 | 2, 7 | nfxfrd 1436 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wnf 1421 wsb 1720 weu 1977 |
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 683 ax-5 1408 ax-7 1409 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-10 1468 ax-11 1469 ax-i12 1470 ax-bndl 1471 ax-4 1472 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-i5r 1500 |
This theorem depends on definitions: df-bi 116 df-tru 1319 df-nf 1422 df-sb 1721 df-eu 1980 |
This theorem is referenced by: nfmod 1994 hbeud 1999 nfreudxy 2581 |
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