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Mirrors > Home > NFE Home > Th. List > df-funs | Unicode version |
Description: Define the class of all functions. (Contributed by SF, 9-Feb-2015.) |
Ref | Expression |
---|---|
df-funs |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cfuns 5759 |
. 2
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2 | vf |
. . . . 5
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3 | 2 | cv 1641 |
. . . 4
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4 | 3 | wfun 4775 |
. . 3
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5 | 4, 2 | cab 2339 |
. 2
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6 | 1, 5 | wceq 1642 |
1
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Colors of variables: wff setvar class |
This definition is referenced by: funsex 5828 elfuns 5829 pmex 6005 |
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