Description: Version of pm11.53 with a disjoint variable condition, requiring fewer axioms. (Contributed by BJ, 7-Mar-2020)
Ref | Expression | ||
---|---|---|---|
Assertion | pm11.53v | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 19.21v | |
|
2 | 1 | albii | |
3 | 19.23v | |
|
4 | 2 3 | bitri | |