Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > anbi2d | Structured version Visualization version Unicode version |
Description: Deduction adding a left conjunct to both sides of a logical equivalence. (Contributed by NM, 11-May-1993.) (Proof shortened by Wolf Lammen, 16-Nov-2013.) |
Ref | Expression |
---|---|
bid.1 |
Ref | Expression |
---|---|
anbi2d |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bid.1 | . . 3 | |
2 | 1 | a1d 25 | . 2 |
3 | 2 | pm5.32d 671 | 1 |
Copyright terms: Public domain | W3C validator |