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Mirrors > Home > MPE Home > Th. List > forn | Structured version Visualization version Unicode version |
Description: The codomain of an onto function is its range. (Contributed by NM, 3-Aug-1994.) |
Ref | Expression |
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forn |
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Step | Hyp | Ref | Expression |
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1 | df-fo 5588 |
. 2
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2 | 1 | simprbi 466 |
1
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