Description: ordelpss with an antecedent removed. (Contributed by Andrew Salmon, 25-Jul-2011)
Ref | Expression | ||
---|---|---|---|
Assertion | ordpss | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ordelord | |
|
2 | 1 | ex | |
3 | 2 | ancrd | |
4 | ordelpss | |
|
5 | 4 | ancoms | |
6 | 5 | biimpd | |
7 | 6 | expimpd | |
8 | 3 7 | syld | |