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Mirrors > Home > ILE Home > Th. List > biimpd | Unicode version |
Description: Deduce an implication from a logical equivalence. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
biimpd.1 |
Ref | Expression |
---|---|
biimpd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | biimpd.1 | . 2 | |
2 | biimp 117 | . 2 | |
3 | 1, 2 | syl 14 | 1 |
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