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Mirrors > Home > ILE Home > Th. List > nfeu1 | Unicode version |
Description: Bound-variable hypothesis builder for uniqueness. (Contributed by NM, 9-Jul-1994.) (Revised by Mario Carneiro, 7-Oct-2016.) |
Ref | Expression |
---|---|
nfeu1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-eu 2016 | . 2 | |
2 | nfa1 1528 | . . 3 | |
3 | 2 | nfex 1624 | . 2 |
4 | 1, 3 | nfxfr 1461 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 104 wal 1340 wnf 1447 wex 1479 weu 2013 |
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 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-4 1497 ax-ial 1521 |
This theorem depends on definitions: df-bi 116 df-nf 1448 df-eu 2016 |
This theorem is referenced by: nfmo1 2025 moaneu 2089 nfreu1 2635 eusv2i 4427 eusv2nf 4428 iota2 5173 sniota 5174 fv3 5503 tz6.12c 5510 eusvobj1 5823 |
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