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Mirrors > Home > NFE Home > Th. List > elcompl | Unicode version |
Description: Membership in complement. (Contributed by SF, 10-Jan-2015.) |
Ref | Expression |
---|---|
elbool.1 |
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Ref | Expression |
---|---|
elcompl |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elbool.1 |
. 2
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2 | elcomplg 3218 |
. 2
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3 | 1, 2 | ax-mp 8 |
1
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