Description: Membership in class intersection. (Contributed by NM, 14-Oct-1999) (Proof shortened by Andrew Salmon, 9-Jul-2011)
Ref | Expression | ||
---|---|---|---|
Assertion | elinti | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elintg | |
|
2 | eleq2 | |
|
3 | 2 | rspccv | |
4 | 1 3 | syl6bi | |
5 | 4 | pm2.43i | |