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Mirrors > Home > MPE Home > Th. List > fndm | Structured version Visualization version Unicode version |
Description: The domain of a function. (Contributed by NM, 2-Aug-1994.) |
Ref | Expression |
---|---|
fndm |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-fn 5891 | . 2 | |
2 | 1 | simprbi 480 | 1 |
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