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Mirrors > Home > MPE Home > Th. List > rabn0 | Structured version Visualization version Unicode version |
Description: Nonempty restricted class abstraction. (Contributed by NM, 29-Aug-1999.) |
Ref | Expression |
---|---|
rabn0 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | abn0 3751 |
. 2
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2 | df-rab 2746 |
. . 3
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3 | 2 | neeq1i 2688 |
. 2
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4 | df-rex 2743 |
. 2
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5 | 1, 3, 4 | 3bitr4i 281 |
1
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