Description: Properties of a pair in an extended binary relation. (Contributed by Alexander van der Vekens, 30-Oct-2017)
Ref | Expression | ||
---|---|---|---|
Hypotheses | rbropapd.1 | |
|
rbropapd.2 | |
||
Assertion | rbropapd | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rbropapd.1 | |
|
2 | rbropapd.2 | |
|
3 | df-br | |
|
4 | 1 | eleq2d | |
5 | 3 4 | bitrid | |
6 | breq12 | |
|
7 | 6 2 | anbi12d | |
8 | 7 | opelopabga | |
9 | 5 8 | sylan9bb | |
10 | 9 | ex | |