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Mirrors > Home > MPE Home > Th. List > 3anass | Structured version Visualization version Unicode version |
Description: Associative law for triple conjunction. (Contributed by NM, 8-Apr-1994.) |
Ref | Expression |
---|---|
3anass |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-3an 993 |
. 2
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2 | anass 659 |
. 2
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3 | 1, 2 | bitri 257 |
1
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