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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 118 | 
. 2
 | |
| 3 | 1, 2 | syl 14 | 
1
 | 
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