Description: Two ways of saying a set is an element of the intersection of a class. (Contributed by RP, 13-Aug-2020)
Ref | Expression | ||
---|---|---|---|
Assertion | elintabg | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elintg | |
|
2 | eleq2w | |
|
3 | 2 | ralab2 | |
4 | 1 3 | bitrdi | |