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Mirrors > Home > ILE Home > Th. List > nf3 | Unicode version |
Description: An alternate definition of df-nf 1438. (Contributed by Mario Carneiro, 24-Sep-2016.) |
Ref | Expression |
---|---|
nf3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nf2 1645 |
. 2
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2 | nfe1 1473 |
. . . 4
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3 | 2 | nfri 1496 |
. . 3
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4 | 3 | 19.21h 1534 |
. 2
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5 | 1, 4 | bitr4i 186 |
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 105 ax-ia2 106 ax-ia3 107 ax-5 1424 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-4 1487 ax-ial 1511 ax-i5r 1512 |
This theorem depends on definitions: df-bi 116 df-nf 1438 |
This theorem is referenced by: hbe1a 2000 eusv2nf 4410 |
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