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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-eu 2029 |
. 2
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2 | nfa1 1541 |
. . 3
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3 | 2 | nfex 1637 |
. 2
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4 | 1, 3 | nfxfr 1474 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-4 1510 ax-ial 1534 |
This theorem depends on definitions: df-bi 117 df-nf 1461 df-eu 2029 |
This theorem is referenced by: nfmo1 2038 moaneu 2102 nfreu1 2648 eusv2i 4455 eusv2nf 4456 iota2 5206 sniota 5207 fv3 5538 tz6.12c 5545 eusvobj1 5861 |
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