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Mirrors > Home > MPE Home > Th. List > resex | Structured version Visualization version Unicode version |
Description: The restriction of a set is a set. (Contributed by Jeff Madsen, 19-Jun-2011.) |
Ref | Expression |
---|---|
resex.1 |
Ref | Expression |
---|---|
resex |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | resex.1 | . 2 | |
2 | resexg 5442 | . 2 | |
3 | 1, 2 | ax-mp 5 | 1 |
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