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Mirrors > Home > MPE Home > Th. List > simp13 | Unicode version |
Description: Simplification of doubly triple conjunction. (Contributed by NM, 17-Nov-2011.) |
Ref | Expression |
---|---|
simp13 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp3 998 | . 2 | |
2 | 1 | 3ad2ant1 1017 | 1 |
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