Description: Deduction form of bitr2i . (Contributed by NM, 9-Jun-2004)
Ref | Expression | ||
---|---|---|---|
Hypotheses | bitr2d.1 | |
|
bitr2d.2 | |
||
Assertion | bitr2d | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bitr2d.1 | |
|
2 | bitr2d.2 | |
|
3 | 1 2 | bitrd | |
4 | 3 | bicomd | |