Description: Deduction eliminating a conjunct. (Contributed by NM, 22-Oct-2007)
Ref | Expression | ||
---|---|---|---|
Hypothesis | pm3.26bda.1 | |
|
Assertion | simplbda | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm3.26bda.1 | |
|
2 | 1 | biimpa | |
3 | 2 | simprd | |