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Mirrors > Home > MPE Home > Th. List > fdm | Structured version Visualization version Unicode version |
Description: The domain of a mapping. (Contributed by NM, 2-Aug-1994.) |
Ref | Expression |
---|---|
fdm |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ffn 5751 |
. 2
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2 | fndm 5697 |
. 2
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3 | 1, 2 | syl 17 |
1
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