Description: Intersection with class abstraction and equivalent wff's. (Contributed by Peter Mazsa, 21-Jul-2021)
Ref | Expression | ||
---|---|---|---|
Hypotheses | abeqinbi.1 | |
|
abeqinbi.2 | |
||
abeqinbi.3 | |
||
Assertion | abeqinbi | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | abeqinbi.1 | |
|
2 | abeqinbi.2 | |
|
3 | abeqinbi.3 | |
|
4 | 1 2 | abeqin | |
5 | 4 3 | rabimbieq | |